| UniProt functional annotation for Q9RT63 | |||
| UniProt code: Q9RT63. |
| Organism: | Deinococcus radiodurans (strain ATCC 13939 / DSM 20539 / JCM 16871 / LMG 4051 / NBRC 15346 / NCIMB 9279 / R1 / VKM B-1422). | |
| Taxonomy: | Bacteria; Deinococcus-Thermus; Deinococci; Deinococcales; Deinococcaceae; Deinococcus. | |
| Function: | DNA-dependent ATPase (ssDNA better than dsDNA) and ATP- dependent 5'-3' DNA helicase. Appears to move along DNA in single base steps, powered by hydrolysis of 1 molecule of ATP. Has low processivity; short (20 bp) substrates with 5'-overhangs or forked ends are the best substrates, is much less efficient on 52 or 76 bp substrates with 5'- overhangs. The presence of single-stranded DNA- binding protein (SSB) increases unwinding 4-5 fold. Has no activity on blunt DNA or DNA with 3'-overhangs. Requires at least 10 bases of 5'- ssDNA for helicase activity. {ECO:0000269|PubMed:15466873, ECO:0000269|PubMed:19490894}. | |
| Catalytic activity: | Reaction=ATP + H2O = ADP + H(+) + phosphate; Xref=Rhea:RHEA:13065, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:30616, ChEBI:CHEBI:43474, ChEBI:CHEBI:456216; EC=3.6.4.12; Evidence={ECO:0000255|HAMAP-Rule:MF_01488}; | |
| Biophysicochemical properties: | pH dependence: Optimum pH is 6.3 to 6.5 for unwinding of a 56 bp substrate and DNA hairpin binding. {ECO:0000269|PubMed:15466873}; | |
| Miscellaneous: | There are no RecB or RecC orthologs in this organism. | |
| Similarity: | Belongs to the RecD family. RecD-like subfamily. {ECO:0000255|HAMAP-Rule:MF_01488}. | |
Annotations taken from UniProtKB at the EBI.