Seroatlas · Human Serome Atlas

CDK5RAP1

Mitochondrial tRNA methylthiotransferase CDK5RAP1

Also known as: C20orf34, C42, CGI-05, CK5P1_HUMAN, HSPC167

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

Protein identityUniProt · HPA

UniProt accession
Q96SZ6
Gene
CDK5RAP1
Ensembl
ENSG00000101391
Chromosome
20
Canonical length
601 aa
Protein class
Enzymes, Predicted intracellular proteins
Subcellular location
Nucleoplasm,Mitochondria,Cytosol

OverviewNCBI Gene

This gene encodes a regulator of cyclin-dependent kinase 5 activity. This protein has also been reported to modify RNA by adding a methylthio-group and may thus have a dual function as an RNA methylthiotransferase and as an inhibitor of cyclin-dependent kinase 5 activity. Alternative splicing results in multiple transcript variants that encode different isoforms. [provided by RefSeq, May 2013]

Canonical amino-acid sequenceUniProt

601 residues, UniProt reviewed canonical sequence.

>Q96SZ6|CDK5RAP1
     1  MHPLQCVLQV QRSLGWGPLA SVSWLSLRMC RAHSSLSSTM CPSPERQEDG ARKDFSSRLA
    61  AGPTFQHFLK SASAPQEKLS SEVEDPPPYL MMDELLGRQR KVYLETYGCQ MNVNDTEIAW
   121  SILQKSGYLR TSNLQEADVI LLVTCSIREK AEQTIWNRLH QLKALKTRRP RSRVPLRIGI
   181  LGCMAERLKE EILNREKMVD ILAGPDAYRD LPRLLAVAES GQQAANVLLS LDETYADVMP
   241  VQTSASATSA FVSIMRGCDN MCSYCIVPFT RGRERSRPIA SILEEVKKLS EQVFLPPRPP
   301  KVLGLQGLKE VTLLGQNVNS FRDNSEVQFN SAVPTNLSRG FTTNYKTKQG GLRFAHLLDQ
   361  VSRVDPEMRI RFTSPHPKDF PDEVLQLIHE RDNICKQIHL PAQSGSSRVL EAMRRGYSRE
   421  AYVELVHHIR ESIPGVSLSS DFIAGFCGET EEDHVQTVSL LREVQYNMGF LFAYSMRQKT
   481  RAYHRLKDDV PEEVKLRRLE ELITIFREEA TKANQTSVGC TQLVLVEGLS KRSATDLCGR
   541  NDGNLKVIFP DAEMEDVNNP GLRVRAQPGD YVLVKITSAS SQTLRGHVLC RTTLRDSSAY
   601  C

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against CDK5RAP1 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
0
Mean surface accessibility (rSASA)
0.29
Highest tissue expression
21 nTPM

Expression across tissuesHPA

Tissue

  • tongue: 21 nTPM
  • skeletal muscle: 20 nTPM
  • bone marrow: 18 nTPM
  • retina: 15 nTPM
  • tonsil: 14 nTPM
  • skin: 12 nTPM

Single-cell type

  • cone photoreceptor cells: 110 nCPM
  • rod photoreceptor cells: 88 nCPM
  • myonuclei: 79 nCPM
  • early primary spermatocytes: 57 nCPM
  • cytotrophoblasts: 54 nCPM
  • brain excitatory neurons: 50 nCPM

Immune cell

  • intermediate monocyte: 22 nTPM
  • MAIT T-cell: 22 nTPM
  • NK-cell: 22 nTPM
  • memory B-cell: 21 nTPM
  • myeloid DC: 19 nTPM
  • gdT-cell: 19 nTPM

Brain region

  • choroid plexus: 14 nTPM
  • basal ganglia: 12 nTPM
  • hippocampal formation: 12 nTPM
  • cerebral cortex: 11 nTPM
  • cerebellum: 10 nTPM
  • amygdala: 10 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)
1.36
gnomAD pLI
0
gnomAD missense Z
1.25
DepMap mean gene effect
0
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 17% 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 CDK5RAP1 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 CDK5RAP1 as an antibody target. Whether an autoantibody or antibody against CDK5RAP1 could matter depends on whether native CDK5RAP1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

CDK5RAP1 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 CDK5RAP1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/CDK5RAP1. 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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