4MN4

Structural Basis for the MukB-topoisomerase IV Interaction

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, D (A, B)	DNA topoisomerase 4 subunit A	polymer	259	28296.0	2	UniProt (P0AFI2) Pfam (PF03989)	Escherichia coli	Topoisomerase IV subunit A
2	B, C (C, D)	Chromosome partition protein MukB	polymer	163	18347.1	2	UniProt (P22523) Pfam (PF16330)	Escherichia coli	Structural maintenance of chromosome-related protein
3	E, F, G, H (A, C, D, B)	water	water		18.0	251	Chemie (HOH)

Sequence modifications

A, B: 497 - 752 (UniProt: P0AFI2)

PDB	External Database	Details
Ser 494	-	expression tag
Asn 495	-	expression tag
Ala 496	-	expression tag

C, D: 645 - 804 (UniProt: P22523)

PDB	External Database	Details
Ser 642	-	expression tag
Asn 643	-	expression tag
Ala 644	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	93286.2
All*	Total formula weight	93286.2

*Water molecules are not included.