RRP7A

gene
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Also known as CGI-96Rrp7

Summary

RRP7A (ribosomal RNA processing 7 homolog A, HGNC:24286) is a protein-coding gene on chromosome 22q13.2, encoding Ribosomal RNA-processing protein 7 homolog A (Q9Y3A4). Nucleolar protein that is involved in ribosomal RNA (rRNA) processing. It is a selective cancer dependency (DepMap: 84.8% of cell lines).

Enables RNA binding activity. Involved in cilium disassembly; protein localization to nucleolus; and ribosome biogenesis. Located in several cellular components, including centrosome; cilium; and nuclear lumen. Part of small-subunit processome. Implicated in primary autosomal recessive microcephaly 28.

Source: NCBI Gene 27341 — RefSeq curated summary.

At a glance

  • Gene–disease (curated): microcephaly 28, primary, autosomal recessive (Moderate, GenCC)
  • Clinical variants (ClinVar): 72 total — 1 pathogenic
  • Phenotypes (HPO): 6
  • Cancer dependency (DepMap): dependent in 84.8% of screened cell lines
  • MANE Select transcript: NM_015703

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:24286
Approved symbolRRP7A
Nameribosomal RNA processing 7 homolog A
Location22q13.2
Locus typegene with protein product
StatusApproved
AliasesCGI-96, Rrp7
Ensembl geneENSG00000189306
Ensembl biotypeprotein_coding
OMIM619449
Entrez27341

Gene structure

Transcript identifiers

Ensembl transcripts: 14 — 12 protein_coding, 1 nonsense_mediated_decay, 1 retained_intron

ENST00000323013, ENST00000416699, ENST00000483303, ENST00000718430, ENST00000871842, ENST00000871843, ENST00000871844, ENST00000915990, ENST00000915991, ENST00000915992, ENST00000915993, ENST00000915994, ENST00000915995, ENST00000950948

RefSeq mRNA: 1 — MANE Select: NM_015703 NM_015703

CCDS: CCDS14036

Canonical transcript exons

ENST00000323013 — 7 exons

ExonStartEnd
ENSE000012444344251410642514304
ENSE000025277264251468242514779
ENSE000036242354251515142515268
ENSE000036289184251800542518147
ENSE000036460834251601142516136
ENSE000040350654250834442512995
ENSE000040350674251971442519796

Expression profiles

Bgee: expression breadth ubiquitous, 190 present calls, max score 90.96.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 16.7187 / max 113.1475, expressed in 1807 samples.

FANTOM5 promoters (3 alternative TSS)

Promoter IDTPM avgSamples expressed
19443114.87051799
1944321.5367878
1944300.311683

Top tissues by expression

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

TissueAnatomy IDExpression scoreQuality
mucosa of transverse colonUBERON:000499190.96gold quality
granulocyteCL:000009490.34gold quality
lower esophagus mucosaUBERON:003583490.16gold quality
apex of heartUBERON:000209887.71gold quality
metanephros cortexUBERON:001053387.68gold quality
sural nerveUBERON:001548887.53gold quality
stromal cell of endometriumCL:000225586.83gold quality
monocyteCL:000057686.67gold quality
leukocyteCL:000073886.63gold quality
adrenal tissueUBERON:001830386.55gold quality
mononuclear cellCL:000084286.34gold quality
esophagus mucosaUBERON:000246986.34gold quality
left adrenal gland cortexUBERON:003582586.30gold quality
anterior cingulate cortexUBERON:000983586.26gold quality
ganglionic eminenceUBERON:000402386.23gold quality
cingulate cortexUBERON:000302786.14gold quality
body of stomachUBERON:000116186.10gold quality
right adrenal gland cortexUBERON:003582786.06gold quality
left adrenal glandUBERON:000123486.01gold quality
body of pancreasUBERON:000115085.60gold quality
vermiform appendixUBERON:000115485.43gold quality
left ovaryUBERON:000211985.40gold quality
right adrenal glandUBERON:000123385.39gold quality
prefrontal cortexUBERON:000045185.32gold quality
esophagusUBERON:000104385.30gold quality
thoracic aortaUBERON:000151585.29gold quality
ascending aortaUBERON:000149685.22gold quality
ventricular zoneUBERON:000305385.21gold quality
omental fat padUBERON:001041485.21gold quality
body of uterusUBERON:000985385.20gold quality

Single-cell (SCXA)

Detected in 2 experiment(s), a significant marker in 1.

ExperimentMarker?Max mean expression
E-ANND-3yes6.60
E-MTAB-6379no85.86

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

149 targeting RRP7A, 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-6867-5P100.0082.213464
HSA-MIR-5193100.0067.261744
HSA-MIR-4455100.0065.481587
HSA-MIR-4533100.0069.482758
HSA-MIR-4692100.0067.322066
HSA-MIR-7110-3P100.0073.182486
HSA-MIR-4673100.0066.641490
HSA-MIR-4283100.0066.422097
HSA-MIR-33A-5P99.9968.621055
HSA-MIR-33B-5P99.9968.581062
HSA-MIR-451499.9967.101870
HSA-MIR-118499.9968.191458
HSA-MIR-4645-5P99.9865.811284
HSA-MIR-6778-3P99.9667.292693
HSA-MIR-365899.9673.874379
HSA-MIR-185-3P99.9567.011743
HSA-MIR-145-5P99.9271.131836
HSA-MIR-5195-3P99.9270.921877
HSA-MIR-6780A-5P99.8866.692776
HSA-MIR-221-5P99.8665.451052
HSA-MIR-807399.8665.211118
HSA-MIR-4728-5P99.8569.394718
HSA-MIR-444799.8567.812900
HSA-MIR-6785-5P99.8268.684428
HSA-MIR-6756-5P99.8267.972466
HSA-MIR-6842-5P99.8067.541587
HSA-MIR-7110-5P99.8067.841712
HSA-MIR-1273H-5P99.7766.322471
HSA-MIR-3934-3P99.7665.511351
HSA-MIR-3680-3P99.7572.513095

Functional genomics

DepMap (CRISPR cell-line fitness): dependent in 84.8% of screened cell lines.

Literature-anchored findings (GeneRIF, showing 1)

  • RRP7A links primary microcephaly to dysfunction of ribosome biogenesis, resorption of primary cilia, and neurogenesis. (PMID:33199730)

Cross-species orthologs

5 orthologs

OrganismSymbolGene ID
danio_reriorrp7aENSDARG00000098934
mus_musculusRrp7aENSMUSG00000018040
rattus_norvegicusRrp7aENSRNOG00000022896
drosophila_melanogasterCG9107FBGN0031764
caenorhabditis_elegansZC434.4WBGENE00013892

Protein

Protein identifiers

Ribosomal RNA-processing protein 7 homolog AQ9Y3A4 (reviewed: Q9Y3A4)

Alternative names: Gastric cancer antigen Zg14

All UniProt accessions (2): F8WAT7, Q9Y3A4

UniProt curated annotations — full annotation on UniProt →

Function. Nucleolar protein that is involved in ribosomal RNA (rRNA) processing. Also plays a role in primary cilia resorption, and cell cycle progression in neurogenesis and neocortex development. Part of the small subunit (SSU) processome, first precursor of the small eukaryotic ribosomal subunit. During the assembly of the SSU processome in the nucleolus, many ribosome biogenesis factors, an RNA chaperone and ribosomal proteins associate with the nascent pre-rRNA and work in concert to generate RNA folding, modifications, rearrangements and cleavage as well as targeted degradation of pre-ribosomal RNA by the RNA exosome.

Subunit / interactions. Part of the small subunit (SSU) processome, composed of more than 70 proteins and the RNA chaperone small nucleolar RNA (snoRNA) U3. Interacts with NOL6; required for NOL6 localization to nucleolus.

Subcellular location. Nucleus. Nucleolus. Cell projection. Cilium. Cytoplasm. Cytoskeleton. Microtubule organizing center. Centrosome.

Tissue specificity. Expressed in the apical radial glial cells in the developing brain.

Disease relevance. Microcephaly 28, primary, autosomal recessive (MCPH28) [MIM:619453] A form of microcephaly, a disease defined as a head circumference more than 3 standard deviations below the age, sex and ethnically matched mean. Brain weight is markedly reduced and the cerebral cortex is disproportionately small. MCPH28 is an autosomal recessive form characterized by reduced head size (down to -8 SD) and variably impaired intellectual development apparent from early childhood. The disease is caused by variants affecting the gene represented in this entry.

Similarity. Belongs to the RRP7 family.

RefSeq proteins (1): NP_056518* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR012677Nucleotide-bd_a/b_plait_sfHomologous_superfamily
IPR024326RRP7_CDomain
IPR034890Rrp7A_RRMDomain
IPR035979RBD_domain_sfHomologous_superfamily
IPR040446RRP7Family
IPR040447RRM_Rrp7Domain

Pfam: PF12923, PF17799

UniProt features (9 total): sequence variant 4, sequence conflict 2, chain 1, domain 1, modified residue 1

Structure

Experimental structures (PDB)

3 structures.

PDBMethodResolution (Å)
7MQAELECTRON MICROSCOPY2.7
7MQ8ELECTRON MICROSCOPY3.6
7MQ9ELECTRON MICROSCOPY3.87

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q9Y3A4-F179.560.23

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 (1): 99

Function

Pathways and Gene Ontology

Reactome pathways

5 pathways

IDPathway
R-HSA-6790901rRNA modification in the nucleus and cytosol
R-HSA-6791226Major pathway of rRNA processing in the nucleolus and cytosol
R-HSA-72312rRNA processing
R-HSA-8868773rRNA processing in the nucleus and cytosol
R-HSA-8953854Metabolism of RNA

MSigDB gene sets: 177 (showing top): GSE45365_CD8A_DC_VS_CD11B_DC_IFNAR_KO_DN, GOBP_RIBOSOME_BIOGENESIS, GOBP_EMBRYO_DEVELOPMENT_ENDING_IN_BIRTH_OR_EGG_HATCHING, GOBP_MATURATION_OF_SSU_RRNA, STARK_PREFRONTAL_CORTEX_22Q11_DELETION_DN, GOBP_RIBOSOME_ASSEMBLY, MODULE_16, GOBP_BLASTOCYST_FORMATION, GARGALOVIC_RESPONSE_TO_OXIDIZED_PHOSPHOLIPIDS_BLUE_UP, GOCC_MICROTUBULE_ORGANIZING_CENTER, MONNIER_POSTRADIATION_TUMOR_ESCAPE_UP, PUJANA_CHEK2_PCC_NETWORK, MODULE_118, GOBP_IN_UTERO_EMBRYONIC_DEVELOPMENT, GOBP_RIBOSOMAL_SMALL_SUBUNIT_BIOGENESIS

GO Biological Process (7): ribosomal small subunit assembly (GO:0000028), blastocyst formation (GO:0001825), rRNA processing (GO:0006364), ribosome biogenesis (GO:0042254), ribosomal small subunit biogenesis (GO:0042274), cilium disassembly (GO:0061523), protein localization to nucleolus (GO:1902570)

GO Molecular Function (3): RNA binding (GO:0003723), nucleic acid binding (GO:0003676), protein binding (GO:0005515)

GO Cellular Component (12): nucleoplasm (GO:0005654), nucleolus (GO:0005730), cytoplasm (GO:0005737), centrosome (GO:0005813), cilium (GO:0005929), cell junction (GO:0030054), small-subunit processome (GO:0032040), CURI complex (GO:0032545), UTP-C complex (GO:0034456), nucleus (GO:0005634), cytoskeleton (GO:0005856), cell projection (GO:0042995)

Reactome top-level categories

Rollup of top-3 pathways:

CategoryPathways
rRNA processing in the nucleus and cytosol2
Metabolism of RNA1
rRNA processing1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
cellular anatomical structure4
nuclear protein-containing complex3
ribosome biogenesis2
ribonucleoprotein complex biogenesis2
binding2
nuclear lumen2
intracellular membraneless organelle2
nucleolus2
protein-RNA complex assembly1
ribosome assembly1
ribosomal small subunit biogenesis1
blastocyst development1
anatomical structure formation involved in morphogenesis1
RNA processing1
rRNA metabolic process1
cilium organization1
organelle disassembly1
protein localization to nucleus1
nucleic acid binding1
intracellular anatomical structure1
centriole1
microtubule organizing center1
intraciliary transport particle1
membrane-bounded organelle1
plasma membrane bounded cell projection1
preribosome1
t-UTP complex1
90S preribosome1
intracellular membrane-bounded organelle1

Protein interactions and networks

STRING

1891 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
RRP7ANOL6Q9H6R4992
RRP7ACSNK2A1P19138891
RRP7ACSNK2BP07312874
RRP7APDCD11Q14690785
RRP7ADDX52Q9Y2R4744
RRP7AKRR1Q13601692
RRP7AUTP20O75691689
RRP7APWP2Q15269678
RRP7AWDR43Q15061671
RRP7AUTP6Q9NYH9664
RRP7AHEATR1Q9H583664
RRP7AUTP18Q9Y5J1657
RRP7ARCL1Q9Y2P8640
RRP7AUTP4Q969X6607
RRP7ABMS1Q14692604

IntAct

82 interactions, top by confidence:

ABTypeScore
CFTRESYT2psi-mi:“MI:2364”(proximity)0.710
TFIP11RRP7Apsi-mi:“MI:0915”(physical association)0.670
RRP7ATFIP11psi-mi:“MI:0915”(physical association)0.670
LRRC46TFPTpsi-mi:“MI:0914”(association)0.640
ARMC7RRP7Apsi-mi:“MI:0915”(physical association)0.560
CDCA7LRRP7Apsi-mi:“MI:0915”(physical association)0.560
GADD45GRRP7Apsi-mi:“MI:0915”(physical association)0.560
RRP7ACDCA7Lpsi-mi:“MI:0915”(physical association)0.560
MECP2GTPBP10psi-mi:“MI:0914”(association)0.530
ZNF512ZNF724psi-mi:“MI:0914”(association)0.530
RPL18NOP56psi-mi:“MI:0914”(association)0.530
RPL18ARRP8psi-mi:“MI:0914”(association)0.530
ZBTB48ZBTB24psi-mi:“MI:0914”(association)0.530
NAP1L5RPS2psi-mi:“MI:0914”(association)0.530
RPS3ZNF316psi-mi:“MI:0914”(association)0.530
RRP7AATP4Apsi-mi:“MI:0914”(association)0.530
ABT1ZNF316psi-mi:“MI:0914”(association)0.530

BioGRID (141): RRP7A (Two-hybrid), RRP7A (Affinity Capture-MS), ATP4A (Affinity Capture-MS), STXBP1 (Affinity Capture-MS), CRMP1 (Affinity Capture-MS), DPYSL3 (Affinity Capture-MS), DPYSL2 (Affinity Capture-MS), NOL6 (Affinity Capture-MS), GNG2 (Affinity Capture-MS), CAMK2A (Affinity Capture-MS), HIST2H3PS2 (Affinity Capture-MS), RRP7A (Affinity Capture-MS), RRP7A (Affinity Capture-MS), RPL24 (Co-fractionation), RPS7 (Co-fractionation)

ESM2 similar proteins: B0K012, D3ZV31, O09172, O35465, O60613, O75817, P0CL18, P24522, P41214, P48507, P50747, Q0II25, Q0V8R7, Q14318, Q1JQA1, Q2TBK2, Q3B7U9, Q3T0J1, Q3U2J5, Q3UX43, Q3ZBN6, Q496Y0, Q58CR3, Q5BK68, Q5C9Z4, Q5PPG7, Q5RA17, Q5RA63, Q5ZLS2, Q60GI5, Q641X9, Q6NYU2, Q7T076, Q80YV4, Q86WV5, Q8BKW4, Q8BXK4, Q8CHQ0, Q8K2D3, Q8K2I9

Diamond homologs: O94683, P25368, Q9D1C9, Q9NSQ0, Q9Y3A4, Q5RA17, Q23314

SIGNOR signaling

0 interactions.

Enriched among interaction partners

Reactome pathways and GO biological processes over-represented among this gene’s 97 IntAct physical interaction partners (hypergeometric vs the genome-wide background, BH-FDR, gene-set size 15–500, ranked by fold). A functional readout of the neighbourhood — distinct from this gene’s own memberships above, and biased toward well-studied / hub proteins, so read it as themes rather than proof.

Reactome pathways:

PathwayPartnersFoldFDR
Eukaryotic Translation Initiation629.4×2e-06
Cap-dependent Translation Initiation629.4×2e-06
SARS-CoV-1 modulates host translation machinery629.4×2e-06
Eukaryotic Translation Elongation626.5×2e-06
Activation of the mRNA upon binding of the cap-binding complex and eIFs, and subsequent binding to 43S625.9×2e-06
rRNA processing in the nucleus and cytosol923.0×3e-08
Nonsense-Mediated Decay (NMD)622.2×5e-06
SARS-CoV-2 modulates host translation machinery621.3×6e-06

GO biological processes:

GO termPartnersFoldFDR
cytoplasmic translation816.6×1e-05
ribosomal small subunit biogenesis615.3×4e-04
rRNA processing711.1×4e-04
translation910.4×5e-05

Disease & clinical

Clinical variants and AI predictions

ClinVar

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

ClassificationCount (floor)
Pathogenic1
Likely pathogenic0
Uncertain significance53
Likely benign4
Benign0

Top pathogenic / likely-pathogenic (1)

Variant IDHGVSClassification
1184440NM_015703.5(RRP7A):c.465G>C (p.Trp155Cys)Pathogenic

SpliceAI

944 predictions. Top by Δscore:

VariantEffectΔscore
22:42512991:TAGAT:Tacceptor_gain1.0000
22:42512993:GAT:Gacceptor_gain1.0000
22:42512994:AT:Aacceptor_gain1.0000
22:42512996:C:CCacceptor_gain1.0000
22:42512996:C:Gacceptor_loss1.0000
22:42512997:T:Cacceptor_loss1.0000
22:42513002:G:Cacceptor_gain1.0000
22:42513002:G:GCacceptor_gain1.0000
22:42514104:A:ACdonor_gain1.0000
22:42514104:ACGCT:Adonor_gain1.0000
22:42514105:C:CAdonor_gain1.0000
22:42514105:CG:Cdonor_gain1.0000
22:42514105:CGCT:Cdonor_gain1.0000
22:42514105:CGCTC:Cdonor_gain1.0000
22:42514108:T:Adonor_gain1.0000
22:42514302:TTCC:Tacceptor_loss1.0000
22:42514678:CTACC:Cdonor_loss1.0000
22:42514679:TA:Tdonor_loss1.0000
22:42514680:ACCT:Adonor_loss1.0000
22:42514776:CACT:Cacceptor_gain1.0000
22:42514778:CT:Cacceptor_gain1.0000
22:42514780:C:CCacceptor_gain1.0000
22:42515146:CTAA:Cdonor_gain1.0000
22:42515149:A:Cdonor_gain1.0000
22:42515150:C:CAdonor_loss1.0000
22:42515150:C:CCdonor_gain1.0000
22:42515150:CT:Cdonor_gain1.0000
22:42515265:AACC:Aacceptor_gain1.0000
22:42515266:ACC:Aacceptor_gain1.0000
22:42515267:CCC:Cacceptor_gain1.0000

AlphaMissense

1810 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
22:42512922:G:CF277L0.998
22:42512922:G:TF277L0.998
22:42512924:A:GF277L0.998
22:42512970:G:CF261L0.997
22:42512970:G:TF261L0.997
22:42512972:A:GF261L0.997
22:42514254:C:AW203C0.996
22:42514254:C:GW203C0.996
22:42512983:A:GL257P0.995
22:42514256:A:GW203R0.994
22:42514256:A:TW203R0.994
22:42512923:A:CF277C0.993
22:42512923:A:GF277S0.993
22:42512930:G:TR275S0.992
22:42512963:C:GD264H0.992
22:42512980:C:GR258P0.992
22:42512981:G:TR258S0.992
22:42512958:C:AK265N0.991
22:42512958:C:GK265N0.991
22:42512971:A:CF261C0.991
22:42512962:T:AD264V0.988
22:42512929:C:GR275P0.986
22:42512971:A:GF261S0.986
22:42514141:A:GF241S0.986
22:42514255:C:GW203S0.985
22:42518033:A:TV63D0.985
22:42512936:C:GA273P0.984
22:42514133:A:GW244R0.984
22:42514133:A:TW244R0.984
22:42514123:C:GR247P0.983

dbSNP variants (sampled 300 via entrez): RS1000237348 (22:42519634 G>A), RS1000453511 (22:42510506 G>A,T), RS1000749859 (22:42514885 G>A), RS1001187455 (22:42518499 C>G), RS1001238180 (22:42518855 C>T), RS1001353801 (22:42513885 A>G), RS1001457710 (22:42509628 C>A), RS1002026652 (22:42521579 T>C), RS1002176858 (22:42517330 G>A,T), RS1002744032 (22:42512714 C>T), RS1003076570 (22:42520736 ACCCGCCAG>A), RS1003237183 (22:42520373 G>T), RS1003435550 (22:42520534 C>T), RS1003646459 (22:42516351 G>C,T), RS1004187144 (22:42517814 C>G)

Disease associations

OMIM: gene MIM:619449 | disease phenotypes: MIM:619453

GenCC curated gene-disease

DiseaseClassificationInheritance
microcephaly 28, primary, autosomal recessiveModerateAutosomal recessive

Mondo (1): microcephaly 28, primary, autosomal recessive (MONDO:0030339)

Orphanet (0):

HPO phenotypes

6 total (6 of 6 shown, HPO-id order):

HPOTerm
HP:0000007Autosomal recessive inheritance
HP:0000252Microcephaly
HP:0000340Sloping forehead
HP:0000750Delayed speech and language development
HP:0001249Intellectual disability
HP:0003577Congenital onset

GWAS associations

0 associations (top):

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

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

PharmGKB clinical annotations

1 annotations.

VariantTypeLevelDrugsPhenotypes
rs11553441Efficacy3methylphenidateAttention Deficit Disorder with Hyperactivity

PharmGKB variants

1 variants.

VariantGenesLevelScore#Clin annotsDrugs
rs11553441RRP7A30.001methylphenidate

CTD chemical–gene interactions

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

ChemicalActions (top 5)PubMed papers
Smokeincreases expression, decreases expression, increases abundance2
afuresertibdecreases expression1
TAK-243increases sumoylation1
testosterone enanthateaffects expression1
pirinixic acidaffects binding, decreases expression, increases activity1
trichostatin Aaffects expression1
sodium arseniteincreases abundance, increases expression1
cobaltous chloridedecreases expression1
zinc chromateincreases abundance, decreases expression1
benzo(e)pyreneincreases methylation1
coumarinincreases phosphorylation1
chromium hexavalent iondecreases expression, increases abundance1
CGP 52608affects binding, increases reaction1
K 7174decreases expression1
ICG 001decreases expression1
NSC 689534affects binding, decreases expression1
Temozolomidedecreases expression1
Decitabineincreases expression1
Acetaminophenincreases expression1
Air Pollutantsincreases expression, increases abundance1
Arsenicincreases abundance, increases expression1
Benzo(a)pyreneaffects methylation1
Copperaffects binding, decreases expression1
Dichlorodiphenyl Dichloroethyleneincreases expression1
Demecolcinedecreases expression1
Dimethyl Sulfoxidedecreases expression1
Doxorubicindecreases expression1
Ethyl Methanesulfonatedecreases expression1
Formaldehydedecreases expression1
Methapyrileneincreases methylation1

Clinical trials (associated diseases)

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