3PWE

Crystal structure of the E. coli beta clamp mutant R103C, I305C, C260S, C333S at 2.2A resolution

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	DNA polymerase III subunit beta	polymer	366	40534.3	2	UniProt (P0A988) Pfam (PF00712) Pfam (PF02767) Pfam (PF02768) In PDB	Escherichia coli
2		water	water		18.0	335	Chemie (HOH)

Sequence modifications

A, B: 1 - 366 (UniProt: P0A988)

PDB	External Database	Details
Cys 103	Arg 103	engineered mutation
Ser 260	Cys 260	engineered mutation
Cys 305	Ile 305	engineered mutation
Ser 333	Cys 333	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	81068.6
All*	Total formula weight	81068.6

*Water molecules are not included.