Tbio DCLRE1B 5' exonuclease Apollo

Protein Summary

Description

5'-3' exonuclease that plays a central role in telomere maintenance and protection during S-phase. Participates in the protection of telomeres against non-homologous end-joining (NHEJ)-mediated repair, thereby ensuring that telomeres do not fuse. Plays a key role in telomeric loop (T loop) formation by being recruited by TERF2 at the leading end telomeres and by processing leading-end telomeres immediately after their replication via its exonuclease activity: generates 3' single-stranded overhang at the leading end telomeres avoiding blunt leading-end telomeres that are vulnerable to end-joining reactions and expose the telomere end in a manner that activates the DNA repair pathways. Together with TERF2, required to protect telomeres from replicative damage during replication by controlling the amount of DNA topoisomerase (TOP1, TOP2A and TOP2B) needed for telomere replication during fork passage and prevent aberrant telomere topology. Also involved in response to DNA damage: plays a role in response to DNA interstrand cross-links (ICLs) by facilitating double-strand break formation. In case of spindle stress, involved in prophase checkpoint. 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]

Uniprot Accession IDs

• Q9H816
• Q9H9E5

Gene Name

• DCLRE1B

Ensembl ID

• ENST00000369563
• ENSP00000358576
• ENSG00000118655
• ENST00000650450
• ENSP00000498042

Symbol

• SNM1B
• SNM1B
• SNMIB
• APOLLO

Knowledge Table

Most Knowledge About	Knowledge Value (0 to 1 scale)
transcription factor binding site profile	0.88
histone modification site profile	0.84
microRNA	0.67
virus perturbation	0.64
tissue	0.63

Protein Classes

No PANTHER Classes or DTO Classes found

IDG Development Level Summary

Tdark

These are targets about which virtually nothing is known. They do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 23.5   (req: < 5)

Gene RIFs: 19   (req: <= 3)

Antibodies: 136   (req: <= 50)

Tbio

These targets do not have known drug or small molecule activities
- AND - satisfy two or more of the following criteria:

Pubmed score: 23.5   (req: >= 5)

Gene RIFs: 19   (req: > 3)

Antibodies: 136   (req: > 50)

- OR - satisfy the following criterion:

Gene Ontology Terms: 14

Tchem

Target has at least one ChEMBL compound with an activity cutoff of < 30 nM - AND - satisfies the preceding conditions

Active Ligand: 0

Tclin

Target has at least one approved drug - AND - satisfies the preceding conditions

Active Drug: 0