CCDC88B

gene
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Also known as FLJ37970BRLZHkRP3FLJ00354GIPIE

Summary

CCDC88B (coiled-coil and HOOK domain protein 88B, HGNC:26757) is a protein-coding gene on chromosome 11q13.1, encoding Coiled-coil domain-containing protein 88B (A6NC98). Acts as a positive regulator of T-cell maturation and inflammatory function.

This gene encodes a member of the hook-related protein family. Members of this family are characterized by an N-terminal potential microtubule binding domain, a central coiled-coiled and a C-terminal Hook-related domain. The encoded protein may be involved in linking organelles to microtubules.

Source: NCBI Gene 283234 — RefSeq curated summary.

At a glance

  • GWAS associations: 17
  • Clinical variants (ClinVar): 309 total
  • MANE Select transcript: NM_032251

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:26757
Approved symbolCCDC88B
Namecoiled-coil and HOOK domain protein 88B
Location11q13.1
Locus typegene with protein product
StatusApproved
AliasesFLJ37970, BRLZ, HkRP3, FLJ00354, GIPIE
Ensembl geneENSG00000168071
Ensembl biotypeprotein_coding
OMIM611205
Entrez283234

Gene structure

Transcript identifiers

Ensembl transcripts: 10 — 7 protein_coding_CDS_not_defined, 3 protein_coding

ENST00000356786, ENST00000359902, ENST00000463837, ENST00000472524, ENST00000473405, ENST00000479965, ENST00000492980, ENST00000494080, ENST00000494566, ENST00000971518

RefSeq mRNA: 1 — MANE Select: NM_032251 NM_032251

CCDS: CCDS8072

Canonical transcript exons

ENST00000356786 — 27 exons

ExonStartEnd
ENSE000018181056435703964357534
ENSE000034747256434377864343914
ENSE000034783006435274464352887
ENSE000034783966435519464355400
ENSE000034811746434159964341742
ENSE000034839906434229464342375
ENSE000034872696434955164349668
ENSE000035457946434090764341018
ENSE000035558046434110964341178
ENSE000035784506434127064341328
ENSE000035890356434199464342139
ENSE000035932726435147664351616
ENSE000035959436435556064355628
ENSE000035987596435371564353813
ENSE000036143796434399764345157
ENSE000036149106434252264342680
ENSE000036240926434142164341504
ENSE000036306736434350764343615
ENSE000036381176434317964343325
ENSE000036508356435116064351255
ENSE000036530686435335164353496
ENSE000036571386435213064352386
ENSE000036574516435400464354170
ENSE000036574836434020464340326
ENSE000036603626434933164349458
ENSE000036608206435305464353240
ENSE000036887996434060764340752

Expression profiles

Bgee: expression breadth ubiquitous, 165 present calls, max score 98.54.

FANTOM5 (CAGE): breadth broad, TPM avg 10.5424 / max 2305.5955, expressed in 910 samples.

FANTOM5 promoters (8 alternative TSS)

Promoter IDTPM avgSamples expressed
1149548.7809520
1149550.9598261
1149640.4525266
1149630.177457
1149590.089232
1149580.051915
1149610.02044
1149620.01034

Top tissues by expression

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

TissueAnatomy IDExpression scoreQuality
granulocyteCL:000009498.54gold quality
cerebellar hemisphereUBERON:000224597.75gold quality
right hemisphere of cerebellumUBERON:001489097.66gold quality
cerebellar cortexUBERON:000212997.58gold quality
cerebellumUBERON:000203795.94gold quality
spleenUBERON:000210695.50gold quality
vermiform appendixUBERON:000115494.33gold quality
monocyteCL:000057694.04gold quality
leukocyteCL:000073893.98gold quality
bone marrow cellCL:000209293.91gold quality
bloodUBERON:000017893.77gold quality
mucosa of transverse colonUBERON:000499192.85gold quality
small intestine Peyer’s patchUBERON:000345490.14gold quality
lymph nodeUBERON:000002989.25gold quality
lower esophagus mucosaUBERON:003583487.85gold quality
transverse colonUBERON:000115787.35gold quality
upper lobe of left lungUBERON:000895287.10gold quality
small intestineUBERON:000210887.02gold quality
tendon of biceps brachiiUBERON:000818886.67silver quality
apex of heartUBERON:000209886.42gold quality
olfactory segment of nasal mucosaUBERON:000538685.97gold quality
right testisUBERON:000453485.84gold quality
minor salivary glandUBERON:000183085.82gold quality
C1 segment of cervical spinal cordUBERON:000646985.81gold quality
right lungUBERON:000216785.71gold quality
bone marrowUBERON:000237185.58gold quality
left testisUBERON:000453385.54gold quality
caecumUBERON:000115385.06gold quality
gall bladderUBERON:000211085.06gold quality
right adrenal gland cortexUBERON:003582784.46gold quality

Single-cell (SCXA)

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

ExperimentMarker?Max mean expression
E-ANND-3yes10.06

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

7 targeting CCDC88B, 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-182599.7268.111089
HSA-MIR-361-3P99.1966.451381
HSA-MIR-6829-5P98.8665.121480
HSA-MIR-615-5P98.1063.76591
HSA-MIR-6765-3P97.8364.591165
HSA-MIR-158796.9564.03932
HSA-MIR-4749-3P96.4066.24798

Literature-anchored findings (GeneRIF, showing 4)

  • Data show that a novel Girdin family protein, Gipie, is expressed in endothelial cells, where it interacts with GRP78, a master regulator of the UPR, and that Gipie/GRP78 interaction controls the IRE1-JNK signaling pathway. (PMID:21289099)
  • A genotype dataset found a sarcoidosis risk locus on chromosome 11q13.1, a risk region for Crohn disease. An allele-dependent expression of CCDC88B was found in bronchoalveolar lavage samples of German, Swedish and Czech patients with sarcoidosis. (PMID:22837380)
  • results demonstrate an important role for HkRP3 in regulating the clustering of lytic granules and MTOC repositioning during the development of NK cell-mediated killing. (PMID:25762780)
  • A critical function of CCDC88B in colonic inflammation and inflammatory bowel disease (PMID:29030607)

Cross-species orthologs

7 orthologs

OrganismSymbolGene ID
danio_rerioccdc88bENSDARG00000076189
mus_musculusCcdc88bENSMUSG00000047810
rattus_norvegicusCcdc88bENSRNOG00000024931
drosophila_melanogasterhookFBGN0001202
drosophila_melanogasterGirdinFBGN0283724
caenorhabditis_elegansWBGENE00006997
caenorhabditis_elegansWBGENE00013082

Paralogs (5): CCDC88C (ENSG00000015133), HOOK2 (ENSG00000095066), CCDC88A (ENSG00000115355), HOOK1 (ENSG00000134709), HOOK3 (ENSG00000168172)

Protein

Protein identifiers

Coiled-coil domain-containing protein 88BA6NC98 (reviewed: A6NC98)

Alternative names: Brain leucine zipper domain-containing protein, Gipie, Hook-related protein 3

All UniProt accessions (2): A6NC98, H7BY33

UniProt curated annotations — full annotation on UniProt →

Function. Acts as a positive regulator of T-cell maturation and inflammatory function. Required for several functions of T-cells, in both the CD4(+) and the CD8(+) compartments and this includes expression of cell surface markers of activation, proliferation, and cytokine production in response to specific or non-specific stimulation. Enhances NK cell cytotoxicity by positively regulating polarization of microtubule-organizing center (MTOC) to cytotoxic synapse, lytic granule transport along microtubules, and dynein-mediated clustering to MTOC. Interacts with HSPA5 and stabilizes the interaction between HSPA5 and ERN1, leading to suppression of ERN1-induced JNK activation and endoplasmic reticulum stress-induced apoptosis.

Subunit / interactions. Homodimer. Interacts with DOCK8. Interacts (via C-terminus) with intact microtubules. Interacts with dynein-dynactin motor complex. Interacts (via C-terminus) with HSPA5.

Subcellular location. Membrane. Cytoplasm. Cytoskeleton. Microtubule organizing center. Endoplasmic reticulum. Golgi apparatus.

Tissue specificity. Expressed in endothelium (at protein level). Expressed in NK cells (at protein level).

Induction. By endoplasmic reticulum stress.

Similarity. Belongs to the CCDC88 family.

Isoforms (6)

UniProt IDNamesCanonical?
A6NC98-11yes
A6NC98-22
A6NC98-33
A6NC98-44
A6NC98-55
A6NC98-66

RefSeq proteins (1): NP_115627* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR036872CH_dom_sfHomologous_superfamily
IPR043936HOOK_NDomain

Pfam: PF19047

UniProt features (33 total): splice variant 12, compositionally biased region 5, region of interest 4, modified residue 4, sequence variant 3, sequence conflict 2, coiled-coil region 2, chain 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-A6NC98-F170.190.38

Functional residue map

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

Post-translational modifications (4): 436, 596, 1348, 1379

Function

Pathways and Gene Ontology

Reactome pathways

0 pathways

MSigDB gene sets: 150 (showing top): GOBP_REGULATION_OF_CELL_ACTIVATION, GOBP_REGULATION_OF_LEUKOCYTE_PROLIFERATION, GOBP_CYTOPLASMIC_MICROTUBULE_ORGANIZATION, IVANOVA_HEMATOPOIESIS_LATE_PROGENITOR, GOBP_POSITIVE_REGULATION_OF_CYTOKINE_PRODUCTION, chr11q13, GOCC_MICROTUBULE_ORGANIZING_CENTER, COUP_01, GOBP_POSITIVE_REGULATION_OF_CELL_ADHESION, GOBP_POSITIVE_REGULATION_OF_LEUKOCYTE_PROLIFERATION, GOBP_CELL_CELL_ADHESION, GOBP_DEFENSE_RESPONSE_TO_OTHER_ORGANISM, GOBP_LEUKOCYTE_PROLIFERATION, GOBP_RESPONSE_TO_PROTOZOAN, GOBP_CYTOKINE_PRODUCTION

GO Biological Process (6): positive regulation of cytokine production (GO:0001819), cytoskeleton-dependent intracellular transport (GO:0030705), cytoplasmic microtubule organization (GO:0031122), positive regulation of T cell proliferation (GO:0042102), defense response to protozoan (GO:0042832), positive regulation of T cell activation (GO:0050870)

GO Molecular Function (3): microtubule binding (GO:0008017), dynein light intermediate chain binding (GO:0051959), protein binding (GO:0005515)

GO Cellular Component (9): nucleoplasm (GO:0005654), cytoplasm (GO:0005737), endoplasmic reticulum (GO:0005783), Golgi apparatus (GO:0005794), centrosome (GO:0005813), cytosol (GO:0005829), membrane (GO:0016020), microtubule organizing center (GO:0005815), cytoskeleton (GO:0005856)

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
cellular anatomical structure5
cytoplasm3
endomembrane system2
intracellular membrane-bounded organelle2
cytokine production1
regulation of cytokine production1
positive regulation of gene expression1
positive regulation of multicellular organismal process1
intracellular transport1
microtubule cytoskeleton organization1
supramolecular fiber organization1
T cell proliferation1
regulation of T cell proliferation1
positive regulation of lymphocyte proliferation1
positive regulation of T cell activation1
response to protozoan1
defense response to other organism1
T cell activation1
regulation of T cell activation1
positive regulation of lymphocyte activation1
positive regulation of leukocyte cell-cell adhesion1
tubulin binding1
protein binding1
binding1
nuclear lumen1
intracellular anatomical structure1
centriole1
microtubule organizing center1
microtubule cytoskeleton1
intracellular membraneless organelle1

Protein interactions and networks

STRING

1691 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
CCDC88BHOOK1Q9UJC3762
CCDC88BGNAI3P08754655
CCDC88BCOPB1P53618520
CCDC88BGPR137Q96N19496
CCDC88BMYH1P12882493
CCDC88BHSPA5P11021490
CCDC88BKCNK4Q9NYG8485
CCDC88BPUS7LQ9H0K6439
CCDC88BITSN1Q15811433
CCDC88BTRMT112Q9UI30412
CCDC88BMEX3CQ5U5Q3397
CCDC88BASB2Q96Q27379
CCDC88BCCDC122Q5T0U0373
CCDC88BFAM151BQ6UXP7364
CCDC88BZNF684Q5T5D7354

IntAct

121 interactions, top by confidence:

ABTypeScore
CCDC88BZC2HC1Cpsi-mi:“MI:0915”(physical association)0.560
CCDC88BGEMpsi-mi:“MI:0915”(physical association)0.560
CCDC88BLNX1psi-mi:“MI:0915”(physical association)0.560
CCDC88BRBM7psi-mi:“MI:0915”(physical association)0.560
CCDC88BTSG101psi-mi:“MI:0915”(physical association)0.560
CCDC88BHCKpsi-mi:“MI:0915”(physical association)0.560
CCDC88BLMO1psi-mi:“MI:0915”(physical association)0.560
CCDC88BTBC1D22Bpsi-mi:“MI:0915”(physical association)0.560
CCDC88BNME7psi-mi:“MI:0915”(physical association)0.560
CCDC88BRINT1psi-mi:“MI:0915”(physical association)0.560
CCDC88BJAKMIP2psi-mi:“MI:0915”(physical association)0.560
CCDC88BEXOSC5psi-mi:“MI:0915”(physical association)0.560
CCDC88BFAM161Apsi-mi:“MI:0915”(physical association)0.560
CCDC88BLMNB2psi-mi:“MI:0915”(physical association)0.560
CCDC88BDEF6psi-mi:“MI:0915”(physical association)0.560
CCDC88BBEX2psi-mi:“MI:0915”(physical association)0.560
CCDC88BTXLNBpsi-mi:“MI:0915”(physical association)0.560
CCDC88BFAM161Bpsi-mi:“MI:0915”(physical association)0.560
CCDC88BTSGA10IPpsi-mi:“MI:0915”(physical association)0.560
CCDC88BTSHZ2psi-mi:“MI:0915”(physical association)0.560
CCDC88BAIRIMpsi-mi:“MI:0915”(physical association)0.560
CCDC88BCCHCR1psi-mi:“MI:0915”(physical association)0.560
CCDC88BKANK2psi-mi:“MI:0915”(physical association)0.560
CCDC88BSH3KBP1psi-mi:“MI:0915”(physical association)0.560
CCDC88BSH2D4Apsi-mi:“MI:0915”(physical association)0.560
CCDC88BLMNB1psi-mi:“MI:0915”(physical association)0.560
CCDC88BTRAF3IP3psi-mi:“MI:0915”(physical association)0.560
CCDC88BRALBP1psi-mi:“MI:0915”(physical association)0.560
CCDC88BPPP1R18psi-mi:“MI:0915”(physical association)0.560
CCDC88BPIN1psi-mi:“MI:0915”(physical association)0.560

BioGRID (44): CCDC88B (Biochemical Activity), CCDC88B (Affinity Capture-MS), CCDC88B (Two-hybrid), CCDC88B (Two-hybrid), CCDC88B (Two-hybrid), CCDC88B (Two-hybrid), CCDC88B (Two-hybrid), CCDC88B (Two-hybrid), CCDC88B (Two-hybrid), CCDC88B (Two-hybrid), CCDC88B (Two-hybrid), CCDC88B (Two-hybrid), CCDC88B (Two-hybrid), CCDC88B (Two-hybrid), CCDC88B (Two-hybrid)

ESM2 similar proteins: A0A140LIT1, A0A1B0GVG4, A0JNH6, A1A5D9, A6NC98, A6NGB0, A6NJZ7, A6NNM3, F6XLV1, O15049, O54887, P0C7N4, P58660, P60531, Q0D2H9, Q0P5D1, Q2KJ21, Q2TAC2, Q3LUD3, Q3T1I3, Q3TMW1, Q3V0F0, Q4QRL3, Q5JTB6, Q5RD60, Q66HR5, Q6NSJ2, Q6PHN1, Q6QZQ4, Q80VM7, Q8BP01, Q8C7U1, Q8CB62, Q8CGU1, Q8CHW5, Q8K2I2, Q8N137, Q8N283, Q8N6Y0, Q8R370

Diamond homologs: A0A2R8QCI3, A6NC98, B4KE73, F3Y5P4, O61493, P85120, Q3V6T2, Q4QRL3, Q5SNZ0, Q6VGS5, Q7PWT9, Q86VS8, Q8BUK6, Q9P219, B4N1C2, Q7TMK6, B0WPU9, B3MNR6, B3NL60, B4I5P7, B4PAF2, B4Q9E6, Q24185, Q6GQ73

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

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

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance276
Likely benign9
Benign1

Top pathogenic / likely-pathogenic (0)

SpliceAI

3936 predictions. Top by Δscore:

VariantEffectΔscore
11:64341107:A:AGacceptor_gain1.0000
11:64341108:G:GGacceptor_gain1.0000
11:64341268:A:AGacceptor_gain1.0000
11:64341269:G:GTacceptor_gain1.0000
11:64341269:GAA:Gacceptor_gain1.0000
11:64341329:G:GGdonor_gain1.0000
11:64341329:GTG:Gdonor_loss1.0000
11:64341419:A:AGacceptor_gain1.0000
11:64341419:AGT:Aacceptor_gain1.0000
11:64341419:AGTGT:Aacceptor_gain1.0000
11:64341420:G:GGacceptor_gain1.0000
11:64341420:GT:Gacceptor_gain1.0000
11:64341420:GTG:Gacceptor_gain1.0000
11:64341420:GTGT:Gacceptor_gain1.0000
11:64341420:GTGTG:Gacceptor_gain1.0000
11:64341502:G:GTdonor_gain1.0000
11:64341721:G:GTdonor_gain1.0000
11:64341723:A:Tdonor_gain1.0000
11:64341741:AG:Adonor_loss1.0000
11:64341742:GG:Gdonor_loss1.0000
11:64341743:GTAG:Gdonor_loss1.0000
11:64341744:T:Gdonor_loss1.0000
11:64341991:CAGC:Cacceptor_loss1.0000
11:64341992:A:AGacceptor_gain1.0000
11:64341992:AGC:Aacceptor_gain1.0000
11:64341992:AGCG:Aacceptor_gain1.0000
11:64341993:G:GTacceptor_gain1.0000
11:64341993:GC:Gacceptor_gain1.0000
11:64341993:GCG:Gacceptor_gain1.0000
11:64341993:GCGG:Gacceptor_gain1.0000

AlphaMissense

9333 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
11:64353397:T:CL1245P0.995
11:64353364:T:CL1234P0.994
11:64353765:T:CI1295T0.994
11:64340324:T:AW20R0.993
11:64340324:T:CW20R0.993
11:64340326:G:CW20C0.993
11:64340326:G:TW20C0.993
11:64353753:T:CL1291P0.993
11:64341497:T:AI175N0.992
11:64354028:G:CK1319N0.992
11:64354028:G:TK1319N0.992
11:64353352:T:CL1230P0.990
11:64353765:T:GI1295S0.990
11:64341485:T:CL171P0.989
11:64341497:T:CI175T0.989
11:64352377:T:CL1116P0.989
11:64341440:T:CF156S0.988
11:64341452:T:CI160T0.988
11:64353391:G:CR1243P0.988
11:64355319:T:CF1409L0.988
11:64355321:C:AF1409L0.988
11:64355321:C:GF1409L0.988
11:64355349:T:CF1419L0.987
11:64355351:C:AF1419L0.987
11:64355351:C:GF1419L0.987
11:64352339:G:CK1103N0.986
11:64352339:G:TK1103N0.986
11:64353224:T:CL1224P0.986
11:64353439:T:CL1259P0.986
11:64341452:T:AI160N0.985

dbSNP variants (sampled 300 via entrez): RS1000167890 (11:64342443 C>T), RS1000173374 (11:64349207 A>C,G), RS1000383749 (11:64343798 C>A,G,T), RS1000436154 (11:64355197 C>A), RS1000475294 (11:64354960 T>C), RS1000504309 (11:64350434 C>T), RS1000519783 (11:64342660 G>C), RS1000610478 (11:64356407 T>A), RS1000686696 (11:64354261 C>G,T), RS1000764334 (11:64350634 C>T), RS1000976139 (11:64354401 C>A,T), RS1001499368 (11:64343878 G>A,C,T), RS1001944855 (11:64350876 A>G), RS1002004708 (11:64349670 T>A), RS1002034754 (11:64338404 G>A)

Disease associations

OMIM: gene MIM:611205 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

17 associations (top):

StudyTraitp-value
GCST001622_1Sarcoidosis3.000000e-18
GCST001725_12Inflammatory bowel disease4.000000e-11
GCST002772_15Leprosy9.000000e-14
GCST003129_14Primary biliary cholangitis2.000000e-09
GCST004030_14Primary sclerosing cholangitis2.000000e-13
GCST004132_98Crohn’s disease5.000000e-06
GCST007932_47Medication use (thyroid preparations)2.000000e-09
GCST008870_33Keratinocyte cancer (MTAG)2.000000e-09
GCST008871_27Basal cell carcinoma3.000000e-10
GCST010173_19Triglyceride levels2.000000e-21
GCST90013410_25Basal cell carcinoma2.000000e-09
GCST90013445_3Type 1 diabetes3.000000e-09
GCST90013445_63Type 1 diabetes3.000000e-09
GCST90020025_1869Waist-to-hip ratio adjusted for BMI3.000000e-29
GCST90020026_501Hip index2.000000e-18
GCST90020027_1471Waist-hip index2.000000e-29
GCST90020028_1986Hip circumference adjusted for BMI1.000000e-14

EFO canonical traits (5, from GWAS)

EFO IDTrait name
EFO:0009933Thyroid preparation use measurement
EFO:0010176keratinocyte carcinoma
EFO:0004530triglyceride measurement
EFO:0007788BMI-adjusted waist-hip ratio
EFO:0008039BMI-adjusted hip circumference

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

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

CTD chemical–gene interactions

25 total (human), top 25 by PubMed support.

ChemicalActions (top 5)PubMed papers
bisphenol Adecreases expression, decreases methylation2
sodium arseniteincreases expression2
Air Pollutantsaffects expression, increases abundance, decreases expression2
Cisplatindecreases expression, increases expression2
Particulate Matterdecreases expression, increases abundance2
aristolochic acid Iincreases expression1
triphenyl phosphateaffects expression1
tris(1,3-dichloro-2-propyl)phosphateincreases expression1
bromovanindecreases expression1
jinfukangincreases expression1
(+)-JQ1 compounddecreases expression1
Acetaminophenincreases expression1
Arsenicaffects methylation1
Camptothecinincreases expression1
Diurondecreases expression1
Estradioldecreases expression1
Ozoneaffects expression, increases abundance1
Tobacco Smoke Pollutionaffects expression1
Tretinoinincreases expression1
Valproic Acidincreases methylation1
Antirheumatic Agentsdecreases expression1
Cadmium Chlorideincreases expression1
Copper Sulfatedecreases expression1
Acrylamideincreases expression1
Vitamin K 3affects expression1

Clinical trials (associated diseases)

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