3QB2

The Crystal Structure of Immunity Factor for SPN (IFS)

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D (A, B, C, D)	Immunity factor for SPN	polymer	187	22365.1	4	UniProt (Q2VJ58) Pfam (PF16718)	Streptococcus pyogenes	SPN immunity factor
2	E, F, G, H, I... (A, B, C, D)	SULFATE ION	non-polymer		96.1	6	Chemie (SO4)
3	K, L, M, N (A, B, C, D)	water	water		18.0	155	Chemie (HOH)

Sequence modifications

A, B, C, D: 1 - 161 (UniProt: Q2VJ58)

PDB	External Database	Details
Phe 162	-	SEE REMARK 999
Arg 163	-	SEE REMARK 999
Ser 164	-	SEE REMARK 999
Phe 165	-	SEE REMARK 999
Leu 166	-	SEE REMARK 999
Glu 167	-	SEE REMARK 999
Gln 168	-	SEE REMARK 999
Lys 169	-	SEE REMARK 999
Leu 170	-	SEE REMARK 999
Ile 171	-	SEE REMARK 999
Ser 172	-	SEE REMARK 999
Glu 173	-	SEE REMARK 999
Glu 174	-	SEE REMARK 999
Asp 175	-	SEE REMARK 999
Leu 176	-	SEE REMARK 999
Asn 177	-	SEE REMARK 999
Ser 178	-	SEE REMARK 999
Ala 179	-	SEE REMARK 999
Val 180	-	SEE REMARK 999
Asp 181	-	SEE REMARK 999
His 182	-	expression tag
His 183	-	expression tag
His 184	-	expression tag
His 185	-	expression tag
His 186	-	expression tag
His 187	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	89460.4
Non-Polymers*	Number of molecules	6
	Total formula weight	576.4
All*	Total formula weight	90036.8

*Water molecules are not included.