Seroatlas · Human Serome Atlas

STRADB

STE20-related kinase adapter protein beta

Also known as: ALS2CR2, CALS-21, ILPIP, ILPIPA, PAPK, STRAB_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
Q9C0K7
Gene
STRADB
Ensembl
ENSG00000082146
Chromosome
2
Canonical length
418 aa
Protein class
Enzymes, Predicted intracellular proteins
Subcellular location
Aggresome,Cytosol

OverviewNCBI Gene

This gene encodes a protein that belongs to the serine/threonine protein kinase STE20 subfamily. One of the active site residues in the protein kinase domain of this protein is altered, and it is thus a pseudokinase. This protein is a component of a complex involved in the activation of serine/threonine kinase 11, a master kinase that regulates cell polarity and energy-generating metabolism. This complex regulates the relocation of this kinase from the nucleus to the cytoplasm, and it is essential for G1 cell cycle arrest mediated by this kinase. The protein encoded by this gene can also interact with the X chromosome-linked inhibitor of apoptosis protein, and this interaction enhances the anti-apoptotic activity of this protein via the JNK1 signal transduction pathway. Two pseudogenes, located on chromosomes 1 and 7, have been found for this gene. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2011]

Canonical amino-acid sequenceUniProt

418 residues, UniProt reviewed canonical sequence.

>Q9C0K7|STRADB
     1  MSLLDCFCTS RTQVESLRPE KQSETSIHQY LVDEPTLSWS RPSTRASEVL CSTNVSHYEL
    61  QVEIGRGFDN LTSVHLARHT PTGTLVTIKI TNLENCNEER LKALQKAVIL SHFFRHPNIT
   121  TYWTVFTVGS WLWVISPFMA YGSASQLLRT YFPEGMSETL IRNILFGAVR GLNYLHQNGC
   181  IHRSIKASHI LISGDGLVTL SGLSHLHSLV KHGQRHRAVY DFPQFSTSVQ PWLSPELLRQ
   241  DLHGYNVKSD IYSVGITACE LASGQVPFQD MHRTQMLLQK LKGPPYSPLD ISIFPQSESR
   301  MKNSQSGVDS GIGESVLVSS GTHTVNSDRL HTPSSKTFSP AFFSLVQLCL QQDPEKRPSA
   361  SSLLSHVFFK QMKEESQDSI LSLLPPAYNK PSISLPPVLP WTEPECDFPD EKDSYWEF

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against STRADB 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)
0.37
Highest tissue expression
102 nTPM

Expression across tissuesHPA

Tissue

  • skeletal muscle: 102 nTPM
  • liver: 98 nTPM
  • bone marrow: 76 nTPM
  • kidney: 68 nTPM
  • tongue: 65 nTPM
  • adrenal gland: 51 nTPM

Single-cell type

  • cardiomyocytes: 1,663 nCPM
  • esophageal apical cells: 199 nCPM
  • adipocytes: 163 nCPM
  • erythrocytes: 161 nCPM
  • cone photoreceptor cells: 159 nCPM
  • enterocytes: 145 nCPM

Immune cell

  • naive B-cell: 36 nTPM
  • NK-cell: 29 nTPM
  • memory B-cell: 29 nTPM
  • myeloid DC: 17 nTPM
  • eosinophil: 16 nTPM
  • T-reg: 16 nTPM

Brain region

  • white matter: 31 nTPM
  • medulla oblongata: 27 nTPM
  • spinal cord: 25 nTPM
  • hypothalamus: 24 nTPM
  • cerebellum: 24 nTPM
  • basal ganglia: 23 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)
0.69
gnomAD pLI
0
gnomAD missense Z
1.54
DepMap mean gene effect
-0.22
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 STRADB 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 STRADB as an antibody target. Whether an autoantibody or antibody against STRADB could matter depends on whether native STRADB is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

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

Canonical record: https://seroatlas.com/gene/STRADB. 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).

Loading the interactive Seroatlas protein explorer...