8pay
From Proteopedia
Jump to navigationJump to search
Structure of the E.coli DNA polymerase sliding clamp with a covalently bound peptide 2.
| ||||||||||||
Structural highlights
FunctionC3SLM2_ECOLX Confers DNA tethering and processivity to DNA polymerases and other proteins. Acts as a clamp, forming a ring around DNA (a reaction catalyzed by the clamp-loading complex) which diffuses in an ATP-independent manner freely and bidirectionally along dsDNA. Initially characterized for its ability to contact the catalytic subunit of DNA polymerase III (Pol III), a complex, multichain enzyme responsible for most of the replicative synthesis in bacteria; Pol III exhibits 3'-5' exonuclease proofreading activity. The beta chain is required for initiation of replication as well as for processivity of DNA replication.[PIRNR:PIRNR000804] Contents | ||||||||||||||||||||
This page was last modified 13:16, 13 March 2024.