4K74

The UmuC subunit of the E. coli DNA polymerase V shows a unique interaction with the beta-clamp processivity factor.

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	372	41459.4	2	UniProt (Q1R4N6) Pfam (PF00712) Pfam (PF02767) Pfam (PF02768) In PDB	Escherichia coli
2	C, D	UmuC peptide	polymer	12	1322.4	2	UniProt (Q8FI25) UniProt (by SIFTS) (A0A0H2V735) In PDB	Escherichia coli
3		water	water		18.0	45	Chemie (HOH)

Sequence modifications

A, B: 1 - 366 (UniProt: Q1R4N6)

PDB	External Database	Details
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag

C, D: 353 - 363 (UniProt: Q8FI25)

PDB	External Database	Details
Cys 352	-	SEE REMARK 999

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	85563.6
All*	Total formula weight	85563.6

*Water molecules are not included.