4F8P

X-ray structure of PsaA from Yersinia pestis, in complex with galactose

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	pH 6 antigen	polymer	145	16249.1	2	UniProt (P31522) Pfam (PF21462)	Yersinia pestis	Adhesin, Antigen 4
2	C, H (A, B)	beta-D-galactopyranose	non-polymer		180.2	2	Chemie (GAL)
3	D, F, G, I, J (A, B)	ACETATE ION	non-polymer		59.0	5	Chemie (ACT)
4	E (A)	TERT-BUTYL FORMATE	non-polymer		102.1	1	Chemie (TBF)
5	K, L (A, B)	water	water		18.0	49	Chemie (HOH)

Sequence modifications

A, B: 2 - 115 (UniProt: P31522)

PDB	External Database	Details
Met 1	-	expression tag

A, B: 120 - 137 (UniProt: P31522)

PDB	External Database	Details
Asp 116	-	linker
Asn 117	-	linker
Lys 118	-	linker
Gln 119	-	linker
Leu 138	-	expression tag
Glu 139	-	expression tag
His 140	-	expression tag
His 141	-	expression tag
His 142	-	expression tag
His 143	-	expression tag
His 144	-	expression tag
His 145	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	32498.2
Non-Polymers*	Number of molecules	8
	Total formula weight	757.7
All*	Total formula weight	33255.8

*Water molecules are not included.