DCLRE1B
5' exonuclease Apollo
Also known as: APOLLO, DCR1B_HUMAN, FLJ12810, FLJ13998, SNM1B
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q9H816
- Gene
- DCLRE1B
- Ensembl
- ENSG00000118655
- Chromosome
- 1
- Canonical length
- 532 aa
- Protein class
- Disease related genes, Enzymes, Potential drug targets, Predicted intracellular proteins
- Subcellular location
- Nucleoplasm,Nuclear bodies
OverviewNCBI Gene
DNA interstrand cross-links prevent strand separation, thereby physically blocking transcription, replication, and segregation of DNA. DCLRE1B is one of several evolutionarily conserved genes involved in repair of interstrand cross-links (Dronkert et al., 2000 [PubMed 10848582]).[supplied by OMIM, Mar 2008]
Canonical amino-acid sequenceUniProt
532 residues, UniProt reviewed canonical sequence.
>Q9H816|DCLRE1B
1 MNGVLIPHTP IAVDFWSLRR AGTARLFFLS HMHSDHTVGL SSTWARPLYC SPITAHLLHR
61 HLQVSKQWIQ ALEVGESHVL PLDEIGQETM TVTLLDANHC PGSVMFLFEG YFGTILYTGD
121 FRYTPSMLKE PALTLGKQIH TLYLDNTNCN PALVLPSRQE AAHQIVQLIR KHPQHNIKIG
181 LYSLGKESLL EQLALEFQTW VVLSPRRLEL VQLLGLADVF TVEEKAGRIH AVDHMEICHS
241 NMLRWNQTHP TIAILPTSRK IHSSHPDIHV IPYSDHSSYS ELRAFVAALK PCQVVPIVSR
301 RPCGGFQDSL SPRISVPLIP DSVQQYMSSS SRKPSLLWLL ERRLKRPRTQ GVVFESPEES
361 ADQSQADRDS KKAKKEKLSP WPADLEKQPS HHPLRIKKQL FPDLYSKEWN KAVPFCESQK
421 RVTMLTAPLG FSVHLRSTDE EFISQKTREE IGLGSPLVPM GDDDGGPEAT GNQSAWMGHG
481 SPLSHSSKGT PLLATEFRGL ALKYLLTPVN FFQAGYSSRR FDQQVEKYHK PCLocalizationUniProt · AlphaFold · HPA
Whether an antibody against DCLRE1B 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)
- 0.41
- Highest tissue expression
- 5.5 nTPM
Expression across tissuesHPA
Tissue
- bone marrow: 5.5 nTPM
- thymus: 4.5 nTPM
- cerebellum: 3.9 nTPM
- lymph node: 3.8 nTPM
- spleen: 3.7 nTPM
- appendix: 3.5 nTPM
Single-cell type
- cardiomyocytes: 45 nCPM
- erythrocyte progenitors: 21 nCPM
- adipocytes: 14 nCPM
- monocyte progenitors: 13 nCPM
- differentiating spermatogonia: 12 nCPM
- extravillous trophoblasts: 12 nCPM
Immune cell
- NK-cell: 5.8 nTPM
- classical monocyte: 4.1 nTPM
- intermediate monocyte: 3.4 nTPM
- MAIT T-cell: 2.5 nTPM
- myeloid DC: 2.5 nTPM
- total PBMC: 2.4 nTPM
Brain region
- cerebellum: 6.5 nTPM
- white matter: 4 nTPM
- midbrain: 3.7 nTPM
- thalamus: 3.5 nTPM
- hypothalamus: 3.4 nTPM
- basal ganglia: 3.3 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about DCLRE1B.
Disease | AllUniProt
Conditions DCLRE1B is implicated in, by any mechanism.
- Dyskeratosis congenita, autosomal recessive, 8 (DKCB8) MIM:620133
Disease | GeneticClinVar
5 pathogenic / likely-pathogenic of 173 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Dyskeratosis congenita, autosomal recessive 8
- Fanconi anemia complementation group C
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)
- 0.47
- gnomAD pLI
- 0.54
- gnomAD missense Z
- 0.55
- DepMap mean gene effect
- -0.72
- DepMap dependency class
- common
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 6% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- double-strand break repair via nonhomologous end joining
- interstrand cross-link repair
- protection from non-homologous end joining at telomere
- telomere capping
- telomere maintenance
- telomere maintenance via telomere lengthening
- telomeric 3' overhang formation
- telomeric loop formation
Molecular functions
- 5'-3' DNA exonuclease activity
- 5'-3' exonuclease activity
- beta-lactamase activity
- damaged DNA binding
- protein homodimerization activity
- protein-containing complex binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of DCLRE1B 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 DCLRE1B as an antibody target. Whether an autoantibody or antibody against DCLRE1B could matter depends on whether native DCLRE1B is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
DCLRE1B 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 DCLRE1B as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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