3MC0

Crystal Structure of Staphylococcal Enterotoxin G (SEG) in Complex with a Mouse T-cell Receptor beta Chain

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C	variable beta 8.2 mouse T cell receptor	polymer	109	11766.0	2	UniProt (A2NTY6) Pfam (PF07686) In PDB	Mus musculus (mouse)
2	B, D	Enterotoxin SEG	polymer	239	27846.5	2	UniProt (D0EMB6) Pfam (PF01123) Pfam (PF02876) In PDB	Staphylococcus aureus
3	A, B, C, D	ACETATE ION	non-polymer		59.0	8	Chemie (ACT)
4		water	water		18.0	438	Chemie (HOH)

Sequence modifications

A, C: 2 - 116 (UniProt: A2NTY6)

PDB	External Database	Details
Glu 17	Gly 46	engineered mutation
Gln 24	Asn 53	engineered mutation
Gln 73	Asn 102	engineered mutation
Ser 80	Leu 109	engineered mutation
-	Glu 124	deletion
-	Leu 125	deletion
-	Phe 128	deletion
-	Asn 129	deletion
-	Gln 130	deletion
Gly 97	Asp 131	engineered mutation
Leu 99	Gln 133	engineered mutation
Ala 109	Pro 137	engineered mutation
Ser 114	Leu 142	engineered mutation

B, D: 1 - 233 (UniProt: D0EMB6)

PDB	External Database	Details
His 234	-	expression tag
His 235	-	expression tag
His 236	-	expression tag
His 237	-	expression tag
His 238	-	expression tag
His 239	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	79225.0
Non-Polymers*	Number of molecules	8
	Total formula weight	472.4
All*	Total formula weight	79697.3

*Water molecules are not included.