5H66

Crystal structure of the Bacillus subtilis SMC head domain complexed with the cognate ScpA C-terminal domain

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Chromosome partition protein Smc	polymer	199	22517.6	1	UniProt (P51834)	Bacillus subtilis (strain 168) (Bacillus subtilis subsp. subtilis str. 168)
2	B (B)	Chromosome partition protein Smc	polymer	188	21466.6	1	UniProt (P51834)	Bacillus subtilis (strain 168) (Bacillus subtilis subsp. subtilis str. 168)
3	C (C)	Segregation and condensation protein A	polymer	80	9289.7	1	UniProt (P35154) Pfam (PF02616)	Bacillus subtilis (strain 168) (Bacillus subtilis subsp. subtilis str. 168)
4	D, E (A, B)	water	water		18.0	143	Chemie (HOH)

Sequence modifications

B: 1000 - 1186 (UniProt: P51834)

PDB	External Database	Details
Met 999	-	expression tag
Gln 1118	Glu 1118	engineered mutation

C: 176 - 251 (UniProt: P35154)

PDB	External Database	Details
Gly 172	-	expression tag
Pro 173	-	expression tag
His 174	-	expression tag
Met 175	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	53273.8
All*	Total formula weight	53273.8

*Water molecules are not included.