Crystal structure of DNA polymerase III subunit beta from Rickettsia rickettsiiCrystal structure of DNA polymerase III subunit beta from Rickettsia rickettsii

Structural highlights

6dlk is a 2 chain structure with sequence from Rickettsia rickettsii str. 'Sheila Smith'. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2Å
Ligands:
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]

See Also

6dlk, resolution 2.00Å

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