DDX53
Probable ATP-dependent RNA helicase DDX53
Also known as: CAGE, CT26, DDX53_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q86TM3
- Gene
- DDX53
- Ensembl
- ENSG00000184735
- Chromosome
- X
- Canonical length
- 631 aa
- Protein class
- Enzymes, Predicted intracellular proteins
- Subcellular location
- Nucleoplasm,Nucleoli,Cytosol
OverviewNCBI Gene
This intronless gene encodes a protein which contains several domains found in members of the DEAD-box helicase protein family. Other members of this protein family participate in ATP-dependent RNA unwinding. [provided by RefSeq, Sep 2011]
Canonical amino-acid sequenceUniProt
631 residues, UniProt reviewed canonical sequence.
>Q86TM3|DDX53
1 MSHWAPEWKR AEANPRDLGA SWDVRGSRGS GWSGPFGHQG PRAAGSREPP LCFKIKNNMV
61 GVVIGYSGSK IKDLQHSTNT KIQIINGESE AKVRIFGNRE MKAKAKAAIE TLIRKQESYN
121 SESSVDNAAS QTPIGRNLGR NDIVGEAEPL SNWDRIRAAV VECEKRKWAD LPPVKKNFYI
181 ESKATSCMSE MQVINWRKEN FNITCDDLKS GEKRLIPKPT CRFKDAFQQY PDLLKSIIRV
241 GIVKPTPIQS QAWPIILQGI DLIVVAQTGT GKTLSYLMPG FIHLDSQPIS REQRNGPGML
301 VLTPTRELAL HVEAECSKYS YKGLKSICIY GGRNRNGQIE DISKGVDIII ATPGRLNDLQ
361 MNNSVNLRSI TYLVIDEADK MLDMEFEPQI RKILLDVRPD RQTVMTSATW PDTVRQLALS
421 YLKDPMIVYV GNLNLVAVNT VKQNIIVTTE KEKRALTQEF VENMSPNDKV IMFVSQKHIA
481 DDLSSDFNIQ GISAESLHGN SEQSDQERAV EDFKSGNIKI LITTDIVSRG LDLNDVTHVY
541 NYDFPRNIDV YVHRVGYIGR TGKTGTSVTL ITQRDSKMAG ELIKILDRAN QSVPEDLVVM
601 AEQYKLNQQK RHRETRSRKP GQRRKEFYFL SLocalizationUniProt · AlphaFold · HPA
Whether an antibody against DDX53 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)
- 0.34
- Highest tissue expression
- 5 nTPM
Expression across tissuesHPA
Tissue
- testis: 5 nTPM
- adipose tissue: 0 nTPM
- adrenal gland: 0 nTPM
- amygdala: 0 nTPM
- appendix: 0 nTPM
- basal ganglia: 0 nTPM
Single-cell type
- early spermatids: 61 nCPM
- late primary spermatocytes: 44 nCPM
- tuft cells: 12 nCPM
- late spermatids: 10 nCPM
- differentiating spermatogonia: 9.7 nCPM
- early primary spermatocytes: 7.9 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
- cerebellum: 5.6 nTPM
- midbrain: 1.8 nTPM
- basal ganglia: 1.6 nTPM
- cerebral cortex: 1.6 nTPM
- hypothalamus: 1.5 nTPM
- thalamus: 1.5 nTPM
ReferencesPubMed · IEDB
Publications for DDX53 from three distinct lines of evidence, kept separate because they answer different questions: whether antibodies are directed at the protein, whether a B-cell epitope has been mapped on it, and whether a T-cell epitope has. Each is labelled with its source.
Reference: AutoantibodyPubMed
3 publications
- Detection of circulating antibodies to linear peptide antigens derived from ANXA1 and DDX53 in lung cancer.
2014 · Tumour Biol · RCR 0.6 · 19 citations - Effective response of the peritoneum microenvironment to peritoneal and systemic metastasis from colorectal carcinoma.
2013 · Asian Pac J Cancer Prev · RCR 0.2 · 6 citations - Clinical Evaluation of Immune Cell Therapy in Esophageal Cancer Resistant to Immunochemotherapy.
2025 · Anticancer Res
Sources: PubMed — antigen-level antibody evidence from a custom retrieval. Records matching a controlled set of autoantibody terms (the MeSH descriptors Autoantibodies and Autoantigens, with title and abstract term variants) were obtained through NCBI E-utilities, and their titles and abstracts parsed for constructions that direct an antibody at a named protein rather than for co-occurrence. Captured names were resolved against UniProt nomenclature and each antigen adjudicated individually against the source text. Bibliographic records from PubMed and MeSH, U.S. National Library of Medicine; citation metrics from NIH iCite (Hutchins et al., PLoS Biology 2016). Titles link to PubMed; abstracts are not reproduced here. The NLM does not endorse this analysis.
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)
- 0.85
- gnomAD pLI
- 0.66
- gnomAD missense Z
- 0.01
- DepMap mean gene effect
- 0.07
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 2% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
- ATP-dependent RNA helicase DEAD-box, conserved site
- Helicase, C-terminal domain-like
- K Homology domain
- K Homology domain, type 1
- DEAD/DEAH-box helicase domain
- Helicase superfamily 1/2, ATP-binding domain
- P-loop containing nucleoside triphosphate hydrolase
- K Homology domain, type 1 superfamily
- KH domain
- DEAD/DEAH box helicase
- Helicase conserved C-terminal domain
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads DDX53 as an antibody target. Whether an autoantibody or antibody against DDX53 could matter depends on whether native DDX53 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
DDX53 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 DDX53 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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