6ptv

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Crystal structure of a DnaN sliding clamp (DNA polymerase III subunit beta) from Rickettsia rickettsii bound to griselimycinCrystal structure of a DnaN sliding clamp (DNA polymerase III subunit beta) from Rickettsia rickettsii bound to griselimycin

Structural highlights

6ptv is a 6 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
NonStd Res:, , , ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[A0A0H3AWV3_RICRS] 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]

6ptv, resolution 1.85Å

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