BIRC6

gene
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Also known as BRUCE

Summary

BIRC6 (baculoviral IAP repeat containing 6, HGNC:13516) is a protein-coding gene on chromosome 2p22.3, encoding Dual E2 ubiquitin-conjugating enzyme/E3 ubiquitin-protein ligase BIRC6 (Q9NR09). Anti-apoptotic protein known as inhibitor of apoptosis (IAP) which can regulate cell death by controlling caspases and by acting as an E3 ubiquitin-protein ligase. It is a selective cancer dependency (DepMap: 27.4% of cell lines).

This gene encodes a protein with a BIR (baculoviral inhibition of apoptosis protein repeat) domain and a UBCc (ubiquitin-conjugating enzyme E2, catalytic) domain. This protein inhibits apoptosis by facilitating the degradation of apoptotic proteins by ubiquitination.

Source: NCBI Gene 57448 — RefSeq curated summary.

At a glance

  • GWAS associations: 9
  • Clinical variants (ClinVar): 742 total — 7 pathogenic, 2 likely-pathogenic
  • Phenotypes (HPO): 1
  • Cancer driver (intOGen): loss-of-function (tumor-suppressor-like) across 15 cancer types
  • Cancer dependency (DepMap): dependent in 27.4% of screened cell lines
  • MANE Select transcript: NM_016252

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:13516
Approved symbolBIRC6
Namebaculoviral IAP repeat containing 6
Location2p22.3
Locus typegene with protein product
StatusApproved
AliasesBRUCE
Ensembl geneENSG00000115760
Ensembl biotypeprotein_coding
OMIM605638
Entrez57448

Gene structure

Transcript identifiers

Ensembl transcripts: 15 — 9 retained_intron, 5 protein_coding, 1 nonsense_mediated_decay

ENST00000421745, ENST00000431454, ENST00000444173, ENST00000461788, ENST00000462504, ENST00000465130, ENST00000466527, ENST00000470250, ENST00000471232, ENST00000483194, ENST00000496555, ENST00000497023, ENST00000648282, ENST00000700518, ENST00000700519

RefSeq mRNA: 2 — MANE Select: NM_016252 NM_001378125, NM_016252

CCDS: CCDS33175

Canonical transcript exons

ENST00000421745 — 74 exons

ExonStartEnd
ENSE000007435203235702332357486
ENSE000007435243237758832377769
ENSE000007435283238015332380290
ENSE000007435323238875032388943
ENSE000007435373240116332401385
ENSE000007435383240146332401623
ENSE000007435393240649932406557
ENSE000007435403241476932416163
ENSE000007435413242914632429295
ENSE000007435423243086532431090
ENSE000007435433243364432433804
ENSE000007435443243549632435585
ENSE000007435453243605332436184
ENSE000007435473244132932441462
ENSE000007435513244232432442455
ENSE000007435523244349132443588
ENSE000007435563246319432463381
ENSE000007435573246450932464823
ENSE000007435583246506532465164
ENSE000007435593246752532467739
ENSE000007435603246790332468111
ENSE000007435613246843732468783
ENSE000007435633246939532469614
ENSE000007435643247016832470301
ENSE000007435653247101432471124
ENSE000007435663247311232473239
ENSE000007435673247621332476344
ENSE000007435693247736832477583
ENSE000007435703247863532478818
ENSE000007435723247946232479617
ENSE000007435743248132032481453
ENSE000007435783248564332485759
ENSE000007435803248764732487801
ENSE000007435833248858832488714
ENSE000007435853249004132490151
ENSE000007435883249142532491558
ENSE000007435913249354032493667
ENSE000007435933249954732500109
ENSE000007435953250171332501888
ENSE000007435973250279532502891
ENSE000007436043250500532505205
ENSE000007436073250798032508259
ENSE000007436103250973832509994
ENSE000007436163251293332513154
ENSE000007436193251499032515770
ENSE000007436293252488832525019
ENSE000008094933244879532448928
ENSE000008094943248242932482582
ENSE000011898103245380832453942
ENSE000015045153251881732518946
ENSE000016524213243950832439686
ENSE000018464473261772532618878
ENSE000034597623239203932392150
ENSE000034605103261144832611582
ENSE000034697953251052632510634
ENSE000034754813244206532442226
ENSE000034780343244552132445668
ENSE000034942673259973932599900
ENSE000035130363254324132543541
ENSE000035276133254785032548014
ENSE000035329103254564332545860
ENSE000035537713260300632603083
ENSE000035617613250304232503236
ENSE000035626573259775132597968
ENSE000035761963257515632575366
ENSE000036214973260745532607643
ENSE000036283383259503432595144
ENSE000036454423239551132395593
ENSE000036653243253135532531551
ENSE000036744323251825432518397
ENSE000036779663252546432525628
ENSE000036819853259391532594060
ENSE000036850033252965132529824
ENSE000036868123254931332549481

Expression profiles

Bgee: expression breadth ubiquitous, 256 present calls, max score 98.48.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 41.6838 / max 677.8579, expressed in 1820 samples.

FANTOM5 promoters (5 alternative TSS)

Promoter IDTPM avgSamples expressed
1964139.57261818
196391.3789735
196420.3738161
196400.2830118
2021500.075422

Top tissues by expression

256 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
epithelial cell of pancreasCL:000008398.48gold quality
oviduct epitheliumUBERON:000480498.23gold quality
calcaneal tendonUBERON:000370197.90gold quality
pancreatic ductal cellCL:000207997.76gold quality
adrenal tissueUBERON:001830397.42gold quality
ileal mucosaUBERON:000033197.18gold quality
tibialis anteriorUBERON:000138597.04gold quality
bone marrow cellCL:000209296.93gold quality
colonic epitheliumUBERON:000039796.10gold quality
corpus callosumUBERON:000233695.83gold quality
upper arm skinUBERON:000426395.80gold quality
cortical plateUBERON:000534395.66gold quality
mucosa of sigmoid colonUBERON:000499395.31gold quality
cauda epididymisUBERON:000436094.73gold quality
colonic mucosaUBERON:000031794.64gold quality
male germ line stem cell (sensu Vertebrata) in testisCL:0000089 ∩ UBERON:000047394.53gold quality
left ventricle myocardiumUBERON:000656694.39gold quality
seminal vesicleUBERON:000099894.23gold quality
tendonUBERON:000004394.15gold quality
ganglionic eminenceUBERON:000402394.04gold quality
tonsilUBERON:000237293.98gold quality
sural nerveUBERON:001548893.97gold quality
ventricular zoneUBERON:000305393.95gold quality
cardiac muscle of right atriumUBERON:000337993.86gold quality
buccal mucosa cellCL:000233693.83gold quality
deltoidUBERON:000147693.80gold quality
skin of hipUBERON:000155493.69gold quality
jejunal mucosaUBERON:000039993.65gold quality
upper leg skinUBERON:000426293.47gold quality
corpus epididymisUBERON:000435993.35gold quality

Single-cell (SCXA)

Detected in 3 experiment(s), a significant marker in 1.

ExperimentMarker?Max mean expression
E-ANND-3yes9.91
E-CURD-135no813.58
E-GEOD-100618no547.95

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

132 targeting BIRC6, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-3163100.0077.238605
HSA-MIR-4262100.0073.263931
HSA-MIR-4795-3P100.0074.624024
HSA-MIR-5011-5P100.0083.465820
HSA-MIR-3613-3P100.0076.367965
HSA-MIR-29A-3P100.0073.111835
HSA-MIR-29B-3P100.0073.181833
HSA-MIR-29C-3P100.0073.151833
HSA-MIR-4668-3P100.0068.742635
HSA-MIR-190A-3P100.0080.355520
HSA-MIR-3925-3P100.0069.951237
HSA-MIR-181A-5P99.9972.962995
HSA-MIR-181B-5P99.9972.972996
HSA-MIR-181C-5P99.9972.952996
HSA-MIR-181D-5P99.9973.042997
HSA-MIR-428299.9975.366408
HSA-MIR-4789-5P99.9870.762721
HSA-MIR-569699.9872.364487
HSA-MIR-56899.9869.862084
HSA-MIR-60799.9773.625593
HSA-MIR-1229-3P99.9766.49906
HSA-MIR-551B-5P99.9671.283493
HSA-MIR-548AA99.9670.643753
HSA-MIR-548AP-3P99.9670.643753
HSA-MIR-548T-3P99.9670.643753
HSA-MIR-391099.9571.132227
HSA-MIR-971899.9468.91918
HSA-MIR-6835-3P99.9370.492904
HSA-MIR-4760-3P99.9370.502385
HSA-MIR-218-5P99.9372.222103

Functional genomics

DepMap (CRISPR cell-line fitness): dependent in 27.4% of screened cell lines.

Literature-anchored findings (GeneRIF, showing 40)

  • Overexpression of Nrdp1 promotes ubiquitination and proteasomal degradation of BRUCE. (PMID:14765125)
  • Apollon binds to, ubiquitinates and facilitates proteasomal degradation of SMAC and caspase-9, results suggesting that Apollon has an essential function in preventing SMAC-induced apoptosis (PMID:15300255)
  • the ability of BRUCE to antagonize both the precursor and mature forms of Smac and caspase-9 is an important mechanism for the prevention of apoptosis under normal conditions (PMID:15507451)
  • Study identifies BRUCE, a 528 kDa multifunctional protein, which processes ubiquitin-conjugating activity, as a major regulator of abscission; during cytokinesis, BRUCE moves from the vesicular system to the midbody ring. (PMID:18329369)
  • p53 stabilisation and caspase-3 activation concur to determine the apoptotic response mediated by Apollon knockdown in breast cancer cells. (PMID:19223905)
  • Gene knockdown of apollon inhibits cell proliferation, induces apoptosis, arrests cell cycle at S phase, and enhances the chemo-sensitivity of colorectal cancer Lovo cells to 5-FU, DDP and EPI. (PMID:21542283)
  • Based on the data presented here we propose that BIRC6 protects the cancer stem cell fraction of colorectal tumors against oxaliplatin and cisplatin (PMID:21788403)
  • Dowregulating Apollon with siRNA can enhance the chemosensitivity of hepatocellular carcinoma cells in vitro. (PMID:22027771)
  • BIRC6 gene expression could be considered as an adverse risk factor in childhood acute leukemia (PMID:22085301)
  • results indicated that Apollon plays a relevant role in melanoma resistance to apoptosis by antitumor agents that trigger the intrinsic or the extrinsic apoptosis pathways (PMID:22553342)
  • Knockdown experiments were performed using BIRC6 lentiviral shRNA and phenotype responses were analyzed by Western blot and MTT-assays.Upon silencing of BIRC6 by shRNA, DIABLO protein levels increased and cells went into apoptosis. (PMID:22788920)
  • Elevated expression of BIRC6 protein in non-small-cell lung cancers is associated with cancer recurrence and chemoresistance. (PMID:23287853)
  • APPOLON to be a novel regulator of mitotic CYCLIN A degradation independent of SAC. (PMID:24302728)
  • The expression of BIRC6 in the cytoplasm is associated with epithelial ovarian cancer (EOC) differentiation and may be a novel predictor for poor prognosis of EOC patients after curative resection. (PMID:24453032)
  • The study demonstrates that the T allele of the rs2754511 in the BIRC6 gene plays a protective role in pseudoexfoliative glaucoma patients of the Pakistani population. (PMID:25118708)
  • Humanin signaling pathway via htHNR/JAKs/STAT3 increased the expression levels of mRNA and protein of Apollon/Bruce, an unusual member of the inhibitors of apoptosis proteins (PMID:25138702)
  • findings demonstrate that BIRC6 overexpression in hepatocellular carcinoma specimens is indicative of poor prognosis and that its interaction with p53 facilitates the degradation of p53 (PMID:25196217)
  • BRUCE acts as a scaffold, bridging the ubiquitin-specific peptidase 8 (USP8) and BRIT1 in a complex to coordinate USP8-catalyzed deubiquitination of BRIT1. (PMID:25733871)
  • BIRC6 overexpression is a predictor of poor prognosis in colorectal cancer and could be a potential target for colorectal cancer therapy. (PMID:25933218)
  • Results show that in addition to the scaffolding function in complex formation, BRUCE has an E3 ligase function to promote BRIT1 deubiquitination by USP8 leading to accumulation of BRIT1 at DNA double-strand break. (PMID:26683461)
  • Apollon gene silencing can induce apoptosis and growth impairment in HeLa cells. In this regard, apollon can be considered a candidate therapeutic target in HeLa cells as a positive human papillomavirus cancer cell line. (PMID:26748613)
  • AVEN and BIRC6 are inhibited by combination therapy of miR-30e and proanthocyanidin in glioblastoma stem cells (PMID:27388765)
  • Apollon expression is associated with the biological characteristics of esophageal squamous cell carcinoma (ESCC), and may be a valuable prognostic factor and a novel chemotherapeutic target for ESCC treatment. (PMID:27432467)
  • Since specific expression of BRUCE protein was revealed in majority of gastric carcinoma tissues, BRUCE protein may be a useful therapeutic target for cancer therapy. (PMID:27614745)
  • BRUCE protein was detected in 82% of tumors and tumor progression stage and invasion depth correlated significantly with BRUCE protein expression (PMID:27649954)
  • BIRC6 targeting inhibited the growth of enzalutamide-resistant castration-resistant prostate cancer models and may represent a new option for clinical treatment of advanced, enzalutamide-resistant prostate cancer (PMID:27663589)
  • Apollon role in the multidrug resistance of human chronic myelogenous leukemia cells (PMID:28358418)
  • circBIRC6 and circCORO1C are functionally associated with the pluripotent state in undifferentiated human embryonic stem cells (PMID:29074849)
  • Data indicate BRUCE/Apollon/Birc6, an inhibitor of apoptosis protein (IAP), as a new autophagy regulator. (PMID:29426817)
  • Our study shows that BIRC6 is upregulated in prostate cancer and is associated with aggressive tumor progression. Moreover, elevated level of BIRC6 predicts poor prognosis for prostate cancer patients, and BIRC6 can regulate prostate cancer cell proliferation and apoptosis in vitro. (PMID:29429983)
  • The miR-204 may play an anti-carcinogenic role in AML and function as a novel biomarker and therapeutic target for the treatment of this disease. (PMID:29764561)
  • Circ-BIRC6 is upregulated in hepatocellular carcinoma tissues and is associated with poor prognosis of hepatocellular carcinoma patients, and promotes hepatocellular carcinoma progression by targeting the miR-3918/Bcl2 axis. (PMID:30931701)
  • These findings demonstrate that UBA6 and BIRC6 negatively regulate autophagy by limiting the availability of LC3B. (PMID:31692446)
  • MALAT1 knockdown inhibits prostate cancer progression by regulating miR-140/BIRC6 axis. (PMID:31935634)
  • Besides the anti-apoptotic functions, recent discoveries have revealed that XIAP, survivin, and BRUCE also exhibit regulatory functions for autophagy in cells. As the role of autophagy in human diseases has already been discussed extensively in different reviews, this review will discuss the emerging autophagic role of XIAP, survivin, and BRUCE in cancer cells. (PMID:32019552)
  • BIRC6 Is Associated with Vulnerability of Carotid Atherosclerotic Plaque. (PMID:33317170)
  • Silencing circBIRC6 inhibits the proliferation, invasion, migration and epithelialmesenchymal transition of bladder cancer cells by targeting the miR4953p/XBP1 signaling axis. (PMID:34542161)
  • BIRC6 modifies risk of invasive bacterial infection in Kenyan children. (PMID:35866869)
  • Oral Squamous Cell Carcinoma: The Role of BIRC6 Serum Level. (PMID:36033570)
  • Exploring the Role of the Inhibitor of Apoptosis BIRC6 in Breast Cancer: A Database Analysis. (PMID:36455174)

Cross-species orthologs

5 orthologs

OrganismSymbolGene ID
danio_reriobirc6ENSDARG00000074166
mus_musculusBirc6ENSMUSG00000024073
rattus_norvegicusBirc6ENSRNOG00000027191
drosophila_melanogasterBruceFBGN0266717
caenorhabditis_elegansWBGENE00006712

Paralogs (7): BIRC3 (ENSG00000023445), BIRC5 (ENSG00000089685), NLRC4 (ENSG00000091106), BIRC7 (ENSG00000101197), XIAP (ENSG00000101966), BIRC2 (ENSG00000110330), NAIP (ENSG00000249437)

Protein

Protein identifiers

Dual E2 ubiquitin-conjugating enzyme/E3 ubiquitin-protein ligase BIRC6Q9NR09 (reviewed: Q9NR09)

Alternative names: BIR repeat-containing ubiquitin-conjugating enzyme, Baculoviral IAP repeat-containing protein 6, Ubiquitin-conjugating BIR domain enzyme apollon

All UniProt accessions (6): Q9NR09, A0A3B3IUB9, A0A8V8TQB4, A0A8V8TR92, H7C094, H7C3P0

UniProt curated annotations — full annotation on UniProt →

Function. Anti-apoptotic protein known as inhibitor of apoptosis (IAP) which can regulate cell death by controlling caspases and by acting as an E3 ubiquitin-protein ligase. Unlike most IAPs, does not contain a RING domain and it is not a RING-type E3 ligase. Instead acts as a dual E2/E3 enzyme that combines ubiquitin conjugating (E2) and ubiquitin ligase (E3) activities in a single polypeptide. Ubiquitination is mediated by a non-canonical E1 ubiquitin activating enzyme UBA6. Ubiquitinates CASP3, CASP7 and CASP9 and inhibits their caspase activity; also ubiquitinates their procaspases but to a weaker extent. Ubiquitinates pro-apoptotic factors DIABLO/SMAC and HTRA2. DIABLO/SMAC antagonizes the caspase inhibition activity of BIRC6 by competing for the same binding sites as the caspases. Ubiquitinates the autophagy protein MAP1LC3B; this activity is also inhibited by DIABLO/SMAC. Important regulator for the final stages of cytokinesis. Crucial for normal vesicle targeting to the site of abscission, but also for the integrity of the midbody and the midbody ring, and its striking ubiquitin modification.

Subunit / interactions. Homodimer; antiparallel. Interacts with RNF41. Interacts with DIABLO/SMAC, likely with higher affinity to SMAC dimer than SMAC monomer; this interaction blocks the substrate-binding site and inhibits the caspase inhibition activity of BIRC6. Interacts with KIF23/MKLP1, USP8/UBPY, BIRC5/survivin, MAP2K1/MEK1, RAB8A/RAB8, RAB11A/RAB11, PLK1, EXOC3/SEC6 and EXOC4/SEC8.

Subcellular location. Golgi apparatus. trans-Golgi network membrane. Endosome. Cytoplasm. Cytoskeleton. Spindle pole. Microtubule organizing center. Centrosome. Midbody. Midbody ring.

Tissue specificity. Expressed in brain cancer cells.

Post-translational modifications. Ubiquitinated; mediated by RNF41 E3 ligase and leads to proteasomal degradation, impairing inhibition of apoptosis. Deubiquitinated by USP8/UBPY. Autoubiquitinated; mediated by E1 ubiquitin activating enzyme UBA6. Proteolytically cleaved. Acts as substrate for CASP3, CASP6, CASP7, CASP9 and HTRA2.

Activity regulation. Inhibited by DIABLO/SMAC, which competes for the substrate-binding sites on BIRC6. BIRC6 inhibits caspases and protease by ubiquitination but BIRC6 itself is subjected to protease cleavage by CASP3, CASP6, CASP7, CASP9 and HTRA2 by protease cleavage.

Domain organisation. The BIR domain is essential for its anti-apoptotic function and is important for binding to DIABLO/SMAC and caspases.

Similarity. Belongs to the BIRC6 family.

RefSeq proteins (2): NP_001365054, NP_057336* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR000608UBCDomain
IPR001370BIR_rptRepeat
IPR016135UBQ-conjugating_enzyme/RWDHomologous_superfamily
IPR022103BIRC6Family

Pfam: PF00179, PF00653, PF12356

UniProt features (243 total): helix 97, strand 65, turn 25, mutagenesis site 12, modified residue 10, region of interest 9, repeat 8, compositionally biased region 7, binding site 4, domain 2, sequence conflict 2, chain 1, active site 1

Structure

Experimental structures (PDB)

22 structures.

PDBMethodResolution (Å)
8E2EELECTRON MICROSCOPY1.98
3CEGX-RAY DIFFRACTION2.01
8E2DELECTRON MICROSCOPY2.07
8E2HELECTRON MICROSCOPY2.3
8E2FELECTRON MICROSCOPY2.47
8E2GELECTRON MICROSCOPY2.99
8ATOELECTRON MICROSCOPY3
8E2IELECTRON MICROSCOPY3.04
9QH5ELECTRON MICROSCOPY3.09
8E2KELECTRON MICROSCOPY3.21
8ATMELECTRON MICROSCOPY3.3
8ATUELECTRON MICROSCOPY3.3
9QIVELECTRON MICROSCOPY3.44
9QIMELECTRON MICROSCOPY3.57
9QGWELECTRON MICROSCOPY3.62
9QIPELECTRON MICROSCOPY4.15
9QIOELECTRON MICROSCOPY4.22
9QHIELECTRON MICROSCOPY4.27
9QIAELECTRON MICROSCOPY4.38
8AUKELECTRON MICROSCOPY6.2
8ATXELECTRON MICROSCOPY7
8AUWELECTRON MICROSCOPY7.2

Predicted structure (AlphaFold)

No AlphaFold model available for Q9NR09 — AlphaFold DB does not currently provide models for proteins above ~3000 aa.

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Catalytic / active sites (1): 4666 (glycyl thioester intermediate)

Ligand- & substrate-binding residues (4): 328; 331; 348; 355

Post-translational modifications (10): 473, 480, 482, 581, 590, 1710, 2222, 2955, 3931, 4023

Mutagenesis-validated functional residues (12):

PositionPhenotype
328impairs ubiquitination of casp3, casp7 and htra2 mutant ‘a-306’; when associated with s-331. abolishes interaction with
331impairs ubiquitination of casp3, casp7 and htra2 mutant ‘a-306’; when associated with s-328. abolishes interaction with
342abolishes interaction with casp3 and the caspase inhibition activity on casp3. impairs interaction with casp7 and abolis
342fails to ubiquitinate n-degron peptide from htra2. impairs diablo/smac inhibition on the ubiquitination of map1lc3b by b
351impairs interaction with casp3 and abolishes the caspase inhibition activity on casp3. impairs interaction with casp7 bu
1616–1666slightly impairs interaction with diablo/smac. abolishes interaction with diablo/smac and impairs ubiquitination of diab
2228–2295impairs diablo/smac inhibition on the ubiquitination of map1lc3b by birc6. enhances ubiquitination of diablo/smac. sever
3189–3193impairs interaction with monomeric diablo/smac ’d-81’ mutant.
3189–3193impairs interaction with casp7 and mildly impairs the caspase inhibition activity on casp7. impairs interaction with mon
3190–3193no effect on diablo/smac inhibition on the ubiquitination of map1lc3b by birc6. no effect on ubiquitination of diablo/sm
4094–4145impairs map1lc3b ubiquitination without disrupting htra2 ubiquitination.
4666catalytically inactive; fails to autoubiquitinate in the presence of uba6.

Function

Pathways and Gene Ontology

Reactome pathways

5 pathways

IDPathway
R-HSA-9700645ALK mutants bind TKIs
R-HSA-9725370Signaling by ALK fusions and activated point mutants
R-HSA-1643685Disease
R-HSA-5663202Diseases of signal transduction by growth factor receptors and second messengers
R-HSA-9700206Signaling by ALK in cancer

MSigDB gene sets: 180 (showing top): TGGTGCT_MIR29A_MIR29B_MIR29C, GOBP_LABYRINTHINE_LAYER_DEVELOPMENT, GOBP_EMBRYO_DEVELOPMENT_ENDING_IN_BIRTH_OR_EGG_HATCHING, ACTACCT_MIR196A_MIR196B, TGCACTT_MIR519C_MIR519B_MIR519A, GRAESSMANN_APOPTOSIS_BY_DOXORUBICIN_DN, GOBP_EXTRINSIC_APOPTOTIC_SIGNALING_PATHWAY, GOCC_MICROTUBULE_ORGANIZING_CENTER, GOBP_NEGATIVE_REGULATION_OF_EXTRINSIC_APOPTOTIC_SIGNALING_PATHWAY, GOBP_EMBRYONIC_PLACENTA_DEVELOPMENT, GOCC_TRANS_GOLGI_NETWORK, GOBP_IN_UTERO_EMBRYONIC_DEVELOPMENT, GOBP_APOPTOTIC_SIGNALING_PATHWAY, GOBP_CYTOKINESIS, GOBP_REGULATION_OF_CELL_CYCLE

GO Biological Process (13): protein phosphorylation (GO:0006468), apoptotic process (GO:0006915), cell population proliferation (GO:0008283), positive regulation of cell population proliferation (GO:0008284), protein ubiquitination (GO:0016567), regulation of cytokinesis (GO:0032465), regulation of cell population proliferation (GO:0042127), negative regulation of apoptotic process (GO:0043066), cell division (GO:0051301), labyrinthine layer development (GO:0060711), negative regulation of extrinsic apoptotic signaling pathway (GO:2001237), placenta development (GO:0001890), regulation of apoptotic process (GO:0042981)

GO Molecular Function (8): ubiquitin-protein transferase activity (GO:0004842), cysteine-type endopeptidase inhibitor activity (GO:0004869), metal ion binding (GO:0046872), ubiquitin conjugating enzyme activity (GO:0061631), protein binding (GO:0005515), transferase activity (GO:0016740), peptidase inhibitor activity (GO:0030414), ubiquitin protein ligase activity (GO:0061630)

GO Cellular Component (13): spindle pole (GO:0000922), nucleus (GO:0005634), endosome (GO:0005768), trans-Golgi network (GO:0005802), centrosome (GO:0005813), microtubule organizing center (GO:0005815), cytosol (GO:0005829), membrane (GO:0016020), midbody (GO:0030496), Flemming body (GO:0090543), cytoplasm (GO:0005737), Golgi apparatus (GO:0005794), cytoskeleton (GO:0005856)

Reactome top-level categories

Rollup of top-3 pathways:

CategoryPathways
Signaling by ALK in cancer2
Disease1
Diseases of signal transduction by growth factor receptors and second messengers1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
cellular anatomical structure7
cellular process2
cell population proliferation2
apoptotic process2
ubiquitin-protein transferase activity2
intracellular membrane-bounded organelle2
endomembrane system2
cytoplasm2
phosphorylation1
protein modification process1
programmed cell death1
apoptotic signaling pathway1
execution phase of apoptosis1
regulation of cell population proliferation1
positive regulation of cellular process1
protein modification by small protein conjugation1
cytokinesis1
regulation of cell cycle process1
regulation of cell division1
regulation of cellular process1
regulation of apoptotic process1
negative regulation of programmed cell death1
embryonic placenta development1
anatomical structure development1
extrinsic apoptotic signaling pathway1
negative regulation of apoptotic signaling pathway1
regulation of extrinsic apoptotic signaling pathway1
animal organ development1
regulation of programmed cell death1
ubiquitin-like protein transferase activity1
cysteine-type endopeptidase activity1
endopeptidase inhibitor activity1
cation binding1
ubiquitin-like protein conjugating enzyme activity1
binding1
catalytic activity1
enzyme inhibitor activity1
peptidase activity1
peptidase regulator activity1
ubiquitin-like protein ligase activity1

Protein interactions and networks

STRING

5290 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
BIRC6BIRC7Q96CA5917
BIRC6RNF41Q9H4P4847
BIRC6XIAPP98170832
BIRC6CASP9P55211788
BIRC6DIABLOQ9NR28764
BIRC6USP8P40818722
BIRC6KIF23Q02241718
BIRC6HTRA2O43464688
BIRC6CASP3P42574653
BIRC6KCNJ11Q14654638
BIRC6TTC27Q6P3X3566
BIRC6DAD1P46966533
BIRC6MYCBP2O75592514
BIRC6NEURL4Q96JN8463
BIRC6UBA6A0AVT1450

IntAct

202 interactions, top by confidence:

ABTypeScore
CAPN1CAPNS1psi-mi:“MI:0914”(association)0.840
SNX6SNX2psi-mi:“MI:0914”(association)0.800
CCDC22VPS26Cpsi-mi:“MI:0914”(association)0.790
KRT31HGSpsi-mi:“MI:0914”(association)0.780
LDOC1PEG10psi-mi:“MI:0914”(association)0.740
RPGRNPHP4psi-mi:“MI:2364”(proximity)0.730
PSMC5PSMD11psi-mi:“MI:0914”(association)0.730
CFTRESYT2psi-mi:“MI:2364”(proximity)0.710
TMEM266KDM1Apsi-mi:“MI:0914”(association)0.670
PLK1EVI5psi-mi:“MI:0914”(association)0.660
AGRPTK1psi-mi:“MI:0914”(association)0.640
VEGFDADAM9psi-mi:“MI:0914”(association)0.640
RALBP1JUNpsi-mi:“MI:0914”(association)0.640
BIRC6PLK1psi-mi:“MI:0403”(colocalization)0.600
BIRC6PLK1psi-mi:“MI:0915”(physical association)0.600
PLK1BIRC6psi-mi:“MI:0915”(physical association)0.600
BIRC6EXOC4psi-mi:“MI:0403”(colocalization)0.560
EXOC4BIRC6psi-mi:“MI:0915”(physical association)0.560
BIRC6EXOC4psi-mi:“MI:0915”(physical association)0.560
KIF23BIRC6psi-mi:“MI:0915”(physical association)0.560
BIRC6KIF23psi-mi:“MI:0915”(physical association)0.560
KIF23BIRC6psi-mi:“MI:0403”(colocalization)0.560
NEURL4APBB1psi-mi:“MI:0914”(association)0.530

BioGRID (413): BIRC6 (Biochemical Activity), DIABLO (Reconstituted Complex), BIRC6 (Affinity Capture-MS), BIRC6 (Affinity Capture-MS), BIRC6 (Affinity Capture-MS), BIRC6 (Affinity Capture-MS), BIRC6 (Affinity Capture-MS), BIRC6 (Affinity Capture-MS), BIRC6 (Affinity Capture-MS), BIRC6 (Affinity Capture-MS), BIRC6 (Affinity Capture-MS), BIRC6 (Affinity Capture-MS), BIRC6 (Affinity Capture-MS), BIRC6 (Affinity Capture-MS), BIRC6 (Affinity Capture-MS)

ESM2 similar proteins: A0A140LFM6, A0A1B0GUA6, A0JMD2, A2VCZ5, A5WUT8, A6H5Y1, A6NKB5, B8JKP6, D3ZJ47, F1M5M3, F1MJR8, M0R5D6, O14513, O60284, P0CAX8, Q0P4S0, Q15468, Q1LV19, Q1RMQ5, Q4V7H1, Q5DU28, Q5DW34, Q5REU9, Q5SW75, Q5SWW4, Q5U4U4, Q5ZM13, Q60664, Q60988, Q6P9N1, Q6ZPK7, Q76I76, Q76I79, Q80TA9, Q80TY4, Q8BLN6, Q8BYM7, Q8IWB6, Q8JGS1, Q8K2J4

Diamond homologs: A1E2V0, A1L020, A1L3F4, A5D8Q0, A9JTP3, A9ULZ2, D3ZDI6, E3SCZ8, O08863, O10296, O10324, O14064, O15392, O62640, O70201, O88738, P40629, P41435, P41436, P41437, P41454, P47732, P98170, Q05AK5, Q0WPJ7, Q13489, Q13490, Q28ER3, Q28H51, Q50L39, Q557E7, Q5BKL8, Q5R881, Q5RAH9, Q60989, Q62210, Q69Z36, Q6I6F4, Q6J1J1, Q6NTT6

SIGNOR signaling

3 interactions.

AEffectBMechanism
BIRC6down-regulatesCASP3binding
“Ub:E1 (UBA1 substrate)”“up-regulates activity”BIRC6ubiquitination
“Ub:E1 (UBA6 substrate)”“up-regulates activity”BIRC6ubiquitination

Disease & clinical

Cancer significance

From intOGen — cancer-driver classification: loss-of-function (tumor-suppressor-like) across 15 cancer types — ANSC, BLCA, BRCA, CCRCC, CHOL, COADREAD, DLBCLNOS, HCC, HNSC, LUAD, MGCT, MT…(+3 more).

Clinical variants and AI predictions

ClinVar

742 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic7
Likely pathogenic2
Uncertain significance527
Likely benign53
Benign47

Top pathogenic / likely-pathogenic (9)

Variant IDHGVSClassification
219057Single allelePathogenic
219060Single allelePathogenic
219087Single allelePathogenic
2684431GRCh37/hg19 2p23.1-22.3(chr2:32083215-32684402)x1Pathogenic
60108GRCh38/hg38 2p23.1-22.3(chr2:31370181-32512769)x1Pathogenic
625542GRCh37/hg19 2p22.3(chr2:32339736-32875274)Pathogenic
685336GRCh37/hg19 2p23.1-22.3(chr2:31958977-33946495)x1Pathogenic
545277NC_000002.12:g.(?32528746)(32559427_?)delLikely pathogenic
988099NC_000002.11:g.(32289091_32312562)_(32958959_32999928)delLikely pathogenic

SpliceAI

12305 predictions. Top by Δscore:

VariantEffectΔscore
2:32357484:GTG:Gdonor_gain1.0000
2:32357487:G:GAdonor_loss1.0000
2:32357487:G:GGdonor_gain1.0000
2:32357488:T:Adonor_loss1.0000
2:32377586:A:AGacceptor_gain1.0000
2:32377587:G:GTacceptor_gain1.0000
2:32377587:GCT:Gacceptor_gain1.0000
2:32377587:GCTA:Gacceptor_gain1.0000
2:32377766:AGAG:Adonor_gain1.0000
2:32377767:GAG:Gdonor_gain1.0000
2:32377767:GAGG:Gdonor_gain1.0000
2:32377768:AGGT:Adonor_loss1.0000
2:32377769:GGTA:Gdonor_loss1.0000
2:32377770:G:Cdonor_loss1.0000
2:32377770:G:GGdonor_gain1.0000
2:32377771:T:Gdonor_loss1.0000
2:32380286:CTAAG:Cdonor_loss1.0000
2:32380287:TAAG:Tdonor_loss1.0000
2:32380288:AAGG:Adonor_loss1.0000
2:32380290:GGTAA:Gdonor_loss1.0000
2:32380291:G:Cdonor_loss1.0000
2:32380292:T:Adonor_loss1.0000
2:32380918:A:Gdonor_gain1.0000
2:32380940:GAAAT:Gdonor_gain1.0000
2:32388747:CAGT:Cacceptor_loss1.0000
2:32388748:A:AGacceptor_gain1.0000
2:32388748:AGT:Aacceptor_gain1.0000
2:32388748:AGTG:Aacceptor_gain1.0000
2:32388748:AGTGG:Aacceptor_gain1.0000
2:32388749:G:GTacceptor_gain1.0000

AlphaMissense

31644 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
2:32377672:G:TR137M1.000
2:32380153:G:CA170P1.000
2:32380232:T:CL196P1.000
2:32388750:T:AW216R1.000
2:32388750:T:CW216R1.000
2:32388752:G:CW216C1.000
2:32388752:G:TW216C1.000
2:32388820:T:CL239P1.000
2:32392064:A:GR289G1.000
2:32392065:G:CR289T1.000
2:32392065:G:TR289I1.000
2:32392066:A:CR289S1.000
2:32392066:A:TR289S1.000
2:32392076:T:CF293L1.000
2:32392077:T:CF293S1.000
2:32392078:T:AF293L1.000
2:32392078:T:GF293L1.000
2:32392085:T:AW296R1.000
2:32392085:T:CW296R1.000
2:32392087:G:CW296C1.000
2:32392087:G:TW296C1.000
2:32392106:T:AW303R1.000
2:32392106:T:CW303R1.000
2:32392108:G:CW303C1.000
2:32392108:G:TW303C1.000
2:32392134:C:AA312D1.000
2:32392136:G:AG313R1.000
2:32392136:G:CG313R1.000
2:32392137:G:AG313E1.000
2:32392137:G:TG313V1.000

dbSNP variants (sampled 300 via entrez): RS1000012621 (2:32368546 CAAATAAAT>C,CAAAT,CAAATAAATAAAT), RS1000016902 (2:32616415 C>T), RS1000018059 (2:32542320 G>T), RS1000047407 (2:32472688 C>T), RS1000051893 (2:32446056 A>G), RS1000060026 (2:32512609 C>G), RS1000069122 (2:32616071 T>C), RS1000078141 (2:32616073 T>C), RS1000080083 (2:32518111 C>A,T), RS1000083990 (2:32581479 C>T), RS1000108017 (2:32457453 T>A,C,G), RS1000108864 (2:32463643 C>T), RS1000111404 (2:32593028 G>A), RS1000133135 (2:32512875 T>C), RS1000133515 (2:32551482 C>T)

Disease associations

OMIM: gene MIM:605638 | disease phenotypes: MIM:182601, MIM:181500

GenCC curated gene-disease

Mondo (4): hereditary spastic paraplegia 4 (MONDO:0008438), schizophrenia (MONDO:0005090), hereditary breast ovarian cancer syndrome (MONDO:0003582), autism spectrum disorder (MONDO:0005258)

Orphanet (4): Autosomal dominant spastic paraplegia type 4 (Orphanet:100985), Hereditary breast and/or ovarian cancer syndrome (Orphanet:145), NON RARE IN EUROPE: Schizophrenia (Orphanet:3140), NON RARE IN EUROPE: Autism (Orphanet:106)

HPO phenotypes

1 total (1 of 1 shown, HPO-id order):

HPOTerm
HP:0100753Schizophrenia

GWAS associations

9 associations (top):

StudyTraitp-value
GCST006661_237Male-pattern baldness7.000000e-26
GCST006661_313Male-pattern baldness2.000000e-20
GCST006661_314Male-pattern baldness4.000000e-20
GCST007323_98Risk-taking tendency (4-domain principal component model)2.000000e-09
GCST007325_39General risk tolerance (MTAG)4.000000e-08
GCST007576_79Chronotype4.000000e-09
GCST008526_13Coffee consumption9.000000e-07
GCST010002_387Refractive error2.000000e-09
GCST90002404_14Red cell distribution width5.000000e-19

EFO canonical traits (4, from GWAS)

EFO IDTrait name
EFO:0008579risk-taking behaviour
EFO:0008328chronotype measurement
EFO:0006781coffee consumption measurement
EFO:0009188Red cell distribution width

MeSH disease descriptors (2)

DescriptorNameTree numbers
D061325Hereditary Breast and Ovarian Cancer SyndromeC04.588.180.483; C04.588.322.455.431; C04.700.517; C12.050.351.500.056.630.705.431; C12.050.351.937.418.685.431; C12.100.250.056.630.705.431; C12.900.418.685.431; C16.320.700.517; C17.800.090.500.483; C19.344.410.431; C19.391.630.705.431
C536865Spastic paraplegia 4, autosomal dominant (supp.)

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (VIP=true, CPIC=false)

GtoPdb / IUPHAR curated pharmacology

(IUPHAR/BPS Guide to Pharmacology — expert-curated)

Target class: other protein — Inhibitors of apoptosis (IAP) protein family

CTD chemical–gene interactions

42 total (human), top 30 by PubMed support.

ChemicalActions (top 5)PubMed papers
Cisplatinaffects cotreatment, decreases expression, decreases response to substance3
bisphenol Adecreases expression, decreases methylation2
Benzo(a)pyreneaffects methylation, increases mutagenesis2
Estradiolincreases expression2
Fluorouracilaffects response to substance, decreases response to substance2
Aflatoxin B1increases methylation, decreases methylation2
aristolochic acid Idecreases expression1
FR900359affects phosphorylation1
triphenyl phosphateaffects expression1
propylparabenincreases expression1
beta-lapachoneincreases expression1
arseniteaffects binding, decreases reaction1
sodium arsenitedecreases expression, increases abundance1
tetrabromobisphenol Aincreases expression1
manganese chloridedecreases expression, increases abundance1
aflatoxin B2decreases methylation1
CGP 52608affects binding, increases reaction1
2-palmitoylglycerolincreases expression1
K 7174increases expression1
2,2’,4,4’-tetrabromodiphenyl etherincreases expression1
jinfukangaffects cotreatment, decreases expression1
brevetoxin 2increases expression1
5-OH-BDE-47decreases expression1
6-OH-BDE-47decreases expression1
Zoledronic Aciddecreases expression1
Acetaminophendecreases expression1
Arsenicdecreases expression, increases abundance1
Atrazinedecreases expression1
Caffeineaffects phosphorylation1
Dieldrinincreases response to substance1

Cellosaurus cell lines

2 cell lines: 2 cancer cell line

First 10 cell lines (id-ordered, not curated):

CellosaurusNameCategorySex
CVCL_SF21HAP1 BIRC6 (-) 1Cancer cell lineMale
CVCL_SF22HAP1 BIRC6 (-) 2Cancer cell lineMale

Clinical trials (associated diseases)

300 trials via MONDO — disease-level, not drug-specific.

TrialPhaseStatusTitle
NCT00000374PHASE4COMPLETEDTreatment for First-Episode Schizophrenia
NCT00001656PHASE4COMPLETEDComparison of Clozapine vs Olanzapine in Childhood-Onset Psychotic Disorders
NCT00007774PHASE4COMPLETEDTo Determine if Olanzapine is More Cost Effective Than Haloperidol for the Treatment of Schizophrenia
NCT00014001PHASE4COMPLETEDCATIE- Schizophrenia Trial
NCT00018668PHASE4COMPLETEDAntipsychotic Response in Schizophrenia
NCT00034801PHASE4COMPLETEDOlanzapine Versus Active Comparator in the Treatment of Depression in Patients With Schizophrenia
NCT00034905PHASE4COMPLETEDA Comparison of Seroquel vs. Risperidone in Schizophrenia
NCT00036088PHASE4COMPLETEDOlanzapine Versus An Active Comparator in the Treatment of Schizophrenia
NCT00044187PHASE4COMPLETEDThe Assessment of a Weight-Gain Agent for the Treatment of Olanzapine-Associated Anti-Obesity Agent in Patients With Schizophrenia, Schizophreniform Disorder, Schizoaffective Disorder, and Bipolar I Disorder
NCT00044655PHASE4COMPLETEDSwitching Medication to Treat Schizophrenia
NCT00048828PHASE4COMPLETEDTreating Drug-Resistant Childhood Schizophrenia
NCT00053703PHASE4COMPLETEDTreatment of Early Onset Schizophrenia Spectrum Disorders (TEOSS)
NCT00056498PHASE4COMPLETEDRisperidone Treatment in Schizophrenia Patients Who Are Currently Taking Clozapine
NCT00061802PHASE4COMPLETEDEfficacy and Safety of Two Atypical Antipsychotics vs. Placebo in Patients With an Acute Exacerbation of Either Schizophrenia or Schizoaffective Disorder
NCT00080327PHASE4COMPLETEDStudy of Three Doses of Aripiprazole in Patients With Acute Schizophrenia
NCT00088049PHASE4COMPLETEDStudy of Olanzapine vs. Aripiprazole in the Treatment of Schizophrenia
NCT00090012PHASE4COMPLETEDComparison of Continuing Olanzapine to Switching to Quetiapine in Overweight or Obese Patients With Schizophrenia and Schizoaffective Disorder
NCT00100776PHASE4COMPLETEDEfficacy of High Dose Olanzapine for the Treatment of Schizophrenia and Schizoaffective Disorder
NCT00103571PHASE4COMPLETEDOlanzapine Versus Aripiprazole in the Treatment of Acutely Ill Patients With Schizophrenia
NCT00108368PHASE4COMPLETEDThe Effects of Risperidone and Olanzapine on Thinking
NCT00114595PHASE4COMPLETEDEthyl-Eicosapentaenoic Acid and Tardive Dyskinesia
NCT00130923PHASE4COMPLETEDRisperidone Long-acting Versus Oral Risperidone in Patients With Schizophrenia and Alcohol Use Disorder
NCT00137020PHASE4COMPLETEDClinical Effect Of Cross Titration Of Antipsychotics With Ziprasidone In Schizophrenia Or Schizoaffective Disorder
NCT00140166PHASE4COMPLETEDTreatment of Acute Schizophrenia With Vitamin Therapy
NCT00145847PHASE4COMPLETEDNaltrexone Treatment of Alcohol Abuse in Schizophrenia
NCT00148564PHASE4COMPLETEDEnergy Homeostasis Under Treatment With Atypical Antipsychotics
NCT00156715PHASE4COMPLETEDEfficacy of Quetiapine in the Treatment of Patients With Schizophrenia and a Comorbid Substance Use Disorder
NCT00158223PHASE4COMPLETEDEffectiveness of Pimozide in Augmenting the Effects of Clozapine in the Treatment of Schizophrenia
NCT00159081PHASE4COMPLETEDOne Year Drug Treatment in First-Episode Schizophrenia
NCT00159120PHASE4COMPLETEDMaintenance Treatment vs. Stepwise Drug Discontinuation in First-Episode Schizophrenia
NCT00159133PHASE4COMPLETEDProdrome-Based Early Intervention With Antipsychotics vs. Benzodiazepines in First-Episode Schizophrenia
NCT00159757PHASE4TERMINATED12 Week Open, Non-Comparative Switch Study Of Oral Ziprazidone In Previously Treated Schizophrenic Patients
NCT00167817PHASE4COMPLETEDEffect of Switch to Aripiprazole on Health and Smoking Parameters in Patients With Schizophrenia: A Pilot Study
NCT00169026PHASE4TERMINATEDAlcoholism and Schizophrenia: Effects of Clozapine
NCT00169039PHASE4TERMINATEDClozapine Versus Chlorpromazine for Treatment-Unresponsive Schizophrenia
NCT00169065PHASE4COMPLETEDEffectiveness of Clozapine Versus Olanzapine for Treatment-resistant Schizophrenia
NCT00169091PHASE4TERMINATEDClozapine Versus Haloperidol for Treating the First Episode of Schizophrenia
NCT00176423PHASE4COMPLETEDEfficacy Study of Galantamine for Cognitive Impairments in Schizophrenia
NCT00176436PHASE4COMPLETEDAtomoxetine for Treatment of Weight Gain in Olanzapine or Clozapine Patients
NCT00177008PHASE4COMPLETEDAripiprazole for the Treatment of Schizophrenia With Co-Morbid Social Anxiety