3MP9

Structure of Streptococcal protein G B1 domain at pH 3.0

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Immunoglobulin G-binding protein G	polymer	64	7216.8	2	UniProt (P06654) Pfam (PF01378) In PDB	Streptococcus sp. 'group G'	IgG-binding protein G
2	A, B	FORMIC ACID	non-polymer		46.0	2	Chemie (FMT)
3		water	water		18.0	87	Chemie (HOH)

Sequence modifications

A, B: 9 - 64 (UniProt: P06654)

PDB	External Database	Details
His 1	-	expression tag
His 2	-	expression tag
His 3	-	expression tag
His 4	-	expression tag
His 5	-	expression tag
His 6	-	expression tag
Ala 7	-	expression tag
Met 8	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	14433.7
Non-Polymers*	Number of molecules	2
	Total formula weight	92.0
All*	Total formula weight	14525.7

*Water molecules are not included.