Seroatlas · Human Serome Atlas

CCDC88A

Girdin

Also known as: APE, FLJ10392, GIV, GRDN, GRDN_HUMAN, HkRP1, KIAA1212

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
Q3V6T2
Gene
CCDC88A
Ensembl
ENSG00000115355
Chromosome
2
Canonical length
1871 aa
Protein class
Disease related genes, Human disease related genes, Predicted intracellular proteins
Subcellular location
Nucleoplasm,Plasma membrane,Centrosome,Basal body
Quaternary structure
Homodimer

OverviewNCBI Gene

This gene encodes a member of the Girdin family of coiled-coil domain containing proteins. The encoded protein is an actin-binding protein that is activated by the serine/threonine kinase Akt and plays a role in cytoskeleton remodeling and cell migration. The encoded protein also enhances Akt signaling by mediating phosphoinositide 3-kinase (PI3K)-dependent activation of Akt by growth factor receptor tyrosine kinases and G protein-coupled receptors. Increased expression of this gene and phosphorylation of the encoded protein may play a role in cancer metastasis. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Dec 2011]

Canonical amino-acid sequenceUniProt

1871 residues, UniProt reviewed canonical sequence.

>Q3V6T2|CCDC88A
     1  MENEIFTPLL EQFMTSPLVT WVKTFGPLAA GNGTNLDEYV ALVDGVFLNQ VMLQINPKLE
    61  SQRVNKKVNN DASLRMHNLS ILVRQIKFYY QETLQQLIMM SLPNVLIIGK NPFSEQGTEE
   121  VKKLLLLLLG CAVQCQKKEE FIERIQGLDF DTKAAVAAHI QEVTHNQENV FDLQWMEVTD
   181  MSQEDIEPLL KNMALHLKRL IDERDEHSET IIELSEERDG LHFLPHASSS AQSPCGSPGM
   241  KRTESRQHLS VELADAKAKI RRLRQELEEK TEQLLDCKQE LEQMEIELKR LQQENMNLLS
   301  DARSARMYRD ELDALREKAV RVDKLESEVS RYKERLHDIE FYKARVEELK EDNQVLLETK
   361  TMLEDQLEGT RARSDKLHEL EKENLQLKAK LHDMEMERDM DRKKIEELME ENMTLEMAQK
   421  QSMDESLHLG WELEQISRTS ELSEAPQKSL GHEVNELTSS RLLKLEMENQ SLTKTVEELR
   481  TTVDSVEGNA SKILKMEKEN QRLSKKVEIL ENEIVQEKQS LQNCQNLSKD LMKEKAQLEK
   541  TIETLRENSE RQIKILEQEN EHLNQTVSSL RQRSQISAEA RVKDIEKENK ILHESIKETS
   601  SKLSKIEFEK RQIKKELEHY KEKGERAEEL ENELHHLEKE NELLQKKITN LKITCEKIEA
   661  LEQENSELER ENRKLKKTLD SFKNLTFQLE SLEKENSQLD EENLELRRNV ESLKCASMKM
   721  AQLQLENKEL ESEKEQLKKG LELLKASFKK TERLEVSYQG LDIENQRLQK TLENSNKKIQ
   781  QLESELQDLE MENQTLQKNL EELKISSKRL EQLEKENKSL EQETSQLEKD KKQLEKENKR
   841  LRQQAEIKDT TLEENNVKIG NLEKENKTLS KEIGIYKESC VRLKELEKEN KELVKRATID
   901  IKTLVTLRED LVSEKLKTQQ MNNDLEKLTH ELEKIGLNKE RLLHDEQSTD DSRYKLLESK
   961  LESTLKKSLE IKEEKIAALE ARLEESTNYN QQLRQELKTV KKNYEALKQR QDEERMVQSS
  1021  PPISGEDNKW ERESQETTRE LLKVKDRLIE VERNNATLQA EKQALKTQLK QLETQNNNLQ
  1081  AQILALQRQT VSLQEQNTTL QTQNAKLQVE NSTLNSQSTS LMNQNAQLLI QQSSLENENE
  1141  SVIKEREDLK SLYDSLIKDH EKLELLHERQ ASEYESLISK HGTLKSAHKN LEVEHRDLED
  1201  RYNQLLKQKG QLEDLEKMLK VEQEKMLLEN KNHETVAAEY KKLCGENDRL NHTYSQLLKE
  1261  TEVLQTDHKN LKSLLNNSKL EQTRLEAEFS KLKEQYQQLD ITSTKLNNQC ELLSQLKGNL
  1321  EEENRHLLDQ IQTLMLQNRT LLEQNMESKD LFHVEQRQYI DKLNELRRQK EKLEEKIMDQ
  1381  YKFYDPSPPR RRGNWITLKM RKLIKSKKDI NRERQKSLTL TPTRSDSSEG FLQLPHQDSQ
  1441  DSSSVGSNSL EDGQTLGTKK SSMVALKRLP FLRNRPKDKD KMKACYRRSM SMNDLVQSMV
  1501  LAGQWTGSTE NLEVPDDIST GKRRKELGAM AFSTTAINFS TVNSSAGFRS KQLVNNKDTT
  1561  SFEDISPQGV SDDSSTGSRV HASRPASLDS GRTSTSNSNN NASLHEVKAG AVNNQSRPQS
  1621  HSSGEFSLLH DHEAWSSSGS SPIQYLKRQT RSSPVLQHKI SETLESRHHK IKTGSPGSEV
  1681  VTLQQFLEES NKLTSVQIKS SSQENLLDEV MKSLSVSSDF LGKDKPVSCG LARSVSGKTP
  1741  GDFYDRRTTK PEFLRPGPRK TEDTYFISSA GKPTPGTQGK IKLVKESSLS RQSKDSNPYA
  1801  TLPRASSVIS TAEGTTRRTS IHDFLTKDSR LPISVDSPPA AADSNTTAAS NVDKVQESRN
  1861  SKSRSREQQS S

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against CCDC88A can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.

Antibody reachability
Cell surface
Secreted
No
Transmembrane segments
0
Mean surface accessibility (rSASA)
0.53
Highest tissue expression
66 nTPM

Expression across tissuesHPA

Tissue

  • spinal cord: 66 nTPM
  • midbrain: 58 nTPM
  • hippocampal formation: 57 nTPM
  • amygdala: 49 nTPM
  • basal ganglia: 48 nTPM
  • testis: 44 nTPM

Single-cell type

  • late spermatids: 1,270 nCPM
  • early spermatids: 953 nCPM
  • oligodendrocytes: 953 nCPM
  • monocyte progenitors: 529 nCPM
  • early primary spermatocytes: 518 nCPM
  • late primary spermatocytes: 485 nCPM

Immune cell

  • plasmacytoid DC: 24 nTPM
  • myeloid DC: 11 nTPM
  • classical monocyte: 7.1 nTPM
  • intermediate monocyte: 7 nTPM
  • non-classical monocyte: 6.8 nTPM
  • basophil: 6.1 nTPM

Brain region

  • white matter: 124 nTPM
  • basal ganglia: 94 nTPM
  • thalamus: 89 nTPM
  • midbrain: 86 nTPM
  • medulla oblongata: 80 nTPM
  • pons: 78 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about CCDC88A.

Disease | AllUniProt

Conditions CCDC88A is implicated in, by any mechanism.

Disease | GeneticClinVar

36 pathogenic / likely-pathogenic of 1,172 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

Genetic constraint and essentialitygnomAD · DepMap

Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.

gnomAD LOEUF (loss-of-function intolerance)
0.13
gnomAD pLI
1
gnomAD missense Z
2.35
DepMap mean gene effect
-0.16
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 5% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).

OntologyGO

Biological processes

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of CCDC88A in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads CCDC88A as an antibody target. Whether an autoantibody or antibody against CCDC88A could matter depends on whether native CCDC88A is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

CCDC88A is annotated at the cell surface, where native CCDC88A is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.

Annotation status

The present source text does not explicitly label CCDC88A as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/CCDC88A. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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