Seroatlas · Human Serome Atlas

GUCY2F

Retinal guanylyl cyclase 2

Also known as: CYGF, GC-F, GUC2DL, GUC2F_HUMAN, RetGC-2, ROS-GC2

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

Protein identityUniProt · HPA

UniProt accession
P51841
Gene
GUCY2F
Ensembl
ENSG00000101890
Chromosome
X
Canonical length
1108 aa
Protein class
Enzymes, Metabolic proteins, Plasma proteins, Predicted membrane proteins
Quaternary structure
Homodimer

OverviewNCBI Gene

The protein encoded by this gene is a guanylyl cyclase found predominantly in photoreceptors in the retina. The encoded protein is thought to be involved in resynthesis of cGMP after light activation of the visual signal transduction cascade, allowing a return to the dark state. This protein is a single-pass type I membrane protein. Defects in this gene may be a cause of X-linked retinitis pigmentosa. [provided by RefSeq, Dec 2008]

Canonical amino-acid sequenceUniProt

1108 residues, UniProt reviewed canonical sequence.

>P51841|GUCY2F
     1  MFLGLGRFSR LVLWFAAFRK LLGHHGLASA KFLWCLCLLS VMSLPQQVWT LPYKIGVVGP
    61  WACDSLFSKA LPEVAARLAI ERINRDPSFD LSYSFEYVIL NEDCQTSRAL SSFISHHQMA
   121  SGFIGPTNPG YCEAASLLGN SWDKGIFSWA CVNYELDNKI SYPTFSRTLP SPIRVLVTVM
   181  KYFQWAHAGV ISSDEDIWVH TANRVASALR SHGLPVGVVL TTGQDSQSMR KALQRIHQAD
   241  RIRIIIMCMH SALIGGETQM HLLECAHDLK MTDGTYVFVP YDALLYSLPY KHTPYRVLRN
   301  NPKLREAYDA VLTITVESQE KTFYQAFTEA AARGEIPEKL EFDQVSPLFG TIYNSIYFIA
   361  QAMNNAMKEN GQAGAASLVQ HSRNMQFHGF NQLMRTDSNG NGISEYVILD TNLKEWELHS
   421  TYTVDMEMEL LRFGGTPIHF PGGRPPRADA KCWFAEGKIC HGGIDPAFAM MVCLTLLIAL
   481  LSINGFAYFI RRRINKIQLI KGPNRILLTL EDVTFINPHF GSKRGSRASV SFQITSEVQS
   541  GRSPRLSFSS GSLTPATYEN SNIAIYEGDW VWLKKFSLGD FGDLKSIKSR ASDVFEMMKD
   601  LRHENINPLL GFFYDSGMFA IVTEFCSRGS LEDILTNQDV KLDWMFKSSL LLDLIKGMKY
   661  LHHREFVHGR LKSRNCVVDG RFVLKVTDYG FNDILEMLRL SEEESSMEEL LWTAPELLRA
   721  PRGSRLGSFA GDVYSFAIIM QEVMVRGTPF CMMDLPAQEI INRLKKPPPV YRPVVPPEHA
   781  PPECLQLMKQ CWAEAAEQRP TFDEIFNQFK TFNKGKKTNI IDSMLRMLEQ YSSNLEDLIR
   841  ERTEELEIEK QKTEKLLTQM LPPSVAESLK KGCTVEPEGF DLVTLYFSDI VGFTTISAMS
   901  EPIEVVDLLN DLYTLFDAII GSHDVYKVET IGDAYMVASG LPKRNGSRHA AEIANMSLDI
   961  LSSVGTFKMR HMPEVPVRIR IGLHSGPVVA GVVGLTMPRY CLFGDTVNTA SRMESTGLPY
  1021  RIHVSLSTVT ILQNLSEGYE VELRGRTELK GKGTEETFWL IGKKGFMKPL PVPPPVDKDG
  1081  QVGHGLQPVE IAAFQRRKAE RQLVRNKP

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against GUCY2F 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
1
Mean surface accessibility (rSASA)
0.29
Highest tissue expression
39 nTPM

Expression across tissuesHPA

Tissue

  • retina: 39 nTPM
  • fallopian tube: 0.2 nTPM
  • testis: 0.2 nTPM
  • cervix: 0.1 nTPM
  • thymus: 0.1 nTPM
  • adipose tissue: 0 nTPM

Single-cell type

  • rod photoreceptor cells: 137 nCPM
  • endometrial ciliated cells: 9.5 nCPM
  • retinal horizontal cells: 6 nCPM
  • thyrotrophs: 5.6 nCPM
  • epicardial cells: 4.5 nCPM
  • respiratory ciliated cells: 4.2 nCPM

Immune cell

  • basophil: 0 nTPM
  • classical monocyte: 0 nTPM
  • eosinophil: 0 nTPM
  • gdT-cell: 0 nTPM
  • intermediate monocyte: 0 nTPM
  • MAIT T-cell: 0 nTPM

Brain region

  • hypothalamus: 0.3 nTPM
  • medulla oblongata: 0.2 nTPM
  • midbrain: 0.2 nTPM
  • cerebral cortex: 0.1 nTPM
  • pons: 0.1 nTPM
  • spinal cord: 0.1 nTPM

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)
0.97
gnomAD pLI
0
gnomAD missense Z
-0.21
DepMap mean gene effect
0.04
DepMap dependency class
none

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% 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 GUCY2F 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 GUCY2F as an antibody target. Whether an autoantibody or antibody against GUCY2F could matter depends on whether native GUCY2F is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

GUCY2F is annotated at the cell surface, where native GUCY2F 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 GUCY2F as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/GUCY2F. 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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