Seroatlas · Human Serome Atlas

RYK

Tyrosine-protein kinase RYK

Also known as: D3S3195, JTK5, JTK5A, RYK_HUMAN, RYK1

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

Protein identityUniProt · HPA

UniProt accession
P34925
Gene
RYK
Ensembl
ENSG00000163785
Chromosome
3
Canonical length
607 aa
Protein class
Enzymes, Predicted membrane proteins
Subcellular location
Golgi apparatus,Cytosol

OverviewNCBI Gene

The protein encoded by this gene is an atypical member of the family of growth factor receptor protein tyrosine kinases, differing from other members at a number of conserved residues in the activation and nucleotide binding domains. This gene product belongs to a subfamily whose members do not appear to be regulated by phosphorylation in the activation segment. It has been suggested that mediation of biological activity by recruitment of a signaling-competent auxiliary protein may occur through an as yet uncharacterized mechanism. The encoded protein has a leucine-rich extracellular domain with a WIF-type Wnt binding region, a single transmembrane domain, and an intracellular tyrosine kinase domain. This protein is involved in stimulating Wnt signaling pathways such as the regulation of axon pathfinding. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Feb 2012]

Canonical amino-acid sequenceUniProt

607 residues, UniProt reviewed canonical sequence.

>P34925|RYK
     1  MRGAARLGRP GRSCLPGARG LRAPPPPPLL LLLALLPLLP APGAAAAPAP RPPELQSASA
    61  GPSVSLYLSE DEVRRLIGLD AELYYVRNDL ISHYALSFSL LVPSETNFLH FTWHAKSKVE
   121  YKLGFQVDNV LAMDMPQVNI SVQGEVPRTL SVFRVELSCT GKVDSEVMIL MQLNLTVNSS
   181  KNFTVLNFKR RKMCYKKLEE VKTSALDKNT SRTIYDPVHA APTTSTRVFY ISVGVCCAVI
   241  FLVAIILAVL HLHSMKRIEL DDSISASSSS QGLSQPSTQT TQYLRADTPN NATPITSYPT
   301  LRIEKNDLRS VTLLEAKGKV KDIAISRERI TLKDVLQEGT FGRIFHGILI DEKDPNKEKQ
   361  AFVKTVKDQA SEIQVTMMLT ESCKLRGLHH RNLLPITHVC IEEGEKPMVI LPYMNWGNLK
   421  LFLRQCKLVE ANNPQAISQQ DLVHMAIQIA CGMSYLARRE VIHKDLAARN CVIDDTLQVK
   481  ITDNALSRDL FPMDYHCLGD NENRPVRWMA LESLVNNEFS SASDVWAFGV TLWELMTLGQ
   541  TPYVDIDPFE MAAYLKDGYR IAQPINCPDE LFAVMACCWA LDPEERPKFQ QLVQCLTEFH
   601  AALGAYV

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against RYK 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
Intracellular
Secreted
No
Transmembrane segments
1
Mean surface accessibility (rSASA)
0.37
Highest tissue expression
79 nTPM

Expression across tissuesHPA

Tissue

  • ovary: 79 nTPM
  • testis: 44 nTPM
  • endometrium: 43 nTPM
  • seminal vesicle: 41 nTPM
  • breast: 40 nTPM
  • thyroid gland: 38 nTPM

Single-cell type

  • breast lactating cells: 204 nCPM
  • choroid plexus epithelial cells: 201 nCPM
  • pituitary stem cells: 178 nCPM
  • sertoli cells: 176 nCPM
  • thyrotrophs: 154 nCPM
  • gonadotrophs: 146 nCPM

Immune cell

  • basophil: 4.7 nTPM
  • memory CD4 T-cell: 2 nTPM
  • naive CD4 T-cell: 1.9 nTPM
  • eosinophil: 1.6 nTPM
  • naive CD8 T-cell: 1.6 nTPM
  • NK-cell: 1.6 nTPM

Brain region

  • choroid plexus: 27 nTPM
  • thalamus: 20 nTPM
  • spinal cord: 19 nTPM
  • white matter: 19 nTPM
  • medulla oblongata: 19 nTPM
  • basal ganglia: 18 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)
0.29
gnomAD pLI
0.99
gnomAD missense Z
1.81

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 10% 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 RYK 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 RYK as an antibody target. Whether an autoantibody or antibody against RYK could matter depends on whether native RYK is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

RYK is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.

Annotation status

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

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