5H79

Crystal structure of a repeat protein with three Protein A repeat module

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (D, C)	Immunoglobulin G-binding protein A	polymer	146	16532.2	2	UniProt (P38507) Pfam (PF02216)	Staphylococcus aureus	IgG-binding protein A,Staphylococcal protein A
2	C, D (D, C)	water	water		18.0	17	Chemie (HOH)

Sequence modifications

D, C: 36 - 82 (UniProt: P38507)

PDB	External Database	Details
Gly 32	-	expression tag
Ser 33	-	expression tag
His 34	-	expression tag
Met 35	-	expression tag
Ala 59	Gly 240	engineered mutation

D, C: 83 - 127 (UniProt: P38507)

PDB	External Database	Details
Ala 86	Asn 222	engineered mutation
Ser 93	His 229	engineered mutation
Ala 104	Gly 240	engineered mutation

D, C: 128 - 177 (UniProt: P38507)

PDB	External Database	Details
Ala 131	Asn 222	engineered mutation
Ala 149	Gly 240	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	33064.4
All*	Total formula weight	33064.4

*Water molecules are not included.