3L6F

Structure of MHC class II molecule HLA-DR1 complexed with phosphopeptide MART-1

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	HLA class II histocompatibility antigen, DR alpha chain	polymer	182	21145.9	1	UniProt (P01903) Pfam (PF00993) Pfam (PF07654)	Homo sapiens (human)	MHC class II antigen DRA
2	B (B)	HLA class II histocompatibility antigen, DRB1-1 beta chain	polymer	193	22456.1	1	UniProt (P04229) Pfam (PF00969) Pfam (PF07654) UniProt (by SIFTS) (P01911)	Homo sapiens (human)	MHC class I antigen DRB1*1, DR-1, DR1
3	C (C)	Melanoma antigen recognized by T-cells 1	polymer	15	1665.7	1	UniProt (Q16655)	Homo sapiens	MART-1, Melan-A protein, Antigen SK29-AA, Antigen LB39-AA
4	D, E, F (A, B, C)	water	water		18.0	196	Chemie (HOH)

Sequence modifications

A: 1 - 182 (UniProt: P01903)

PDB	External Database	Details
Gln 177	His 202	conflict

B: 1 - 192 (UniProt: P04229)

PDB	External Database	Details
Met 0	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	45267.7
All*	Total formula weight	45267.7

*Water molecules are not included.