4X5W

HLA-DR1 with CLIP102-120(M107W)

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	HLA class II histocompatibility antigen, DR alpha chain	polymer	193	22353.2	1	UniProt (P01903) Pfam (PF00993) Pfam (PF07654) In PDB	Homo sapiens (Human)	MHC class II antigen DRA
2	B	HLA class II histocompatibility antigen, DRB1-1 beta chain	polymer	199	23087.8	1	UniProt (P04229) Pfam (PF00969) Pfam (PF07654) UniProt (by SIFTS) (P01911) In PDB	Homo sapiens (Human)	MHC class II antigen DRB1*1,DR1
3	C	HLA class II histocompatibility antigen gamma chain	polymer	19	2201.8	1	UniProt (P04233) In PDB	Homo sapiens	HLA-DR antigens-associated invariant chain,Ia antigen-associated invariant chain,Ii,p33
4		water	water		18.0	524	Chemie (HOH)

Sequence modifications

A: 1 - 192 (UniProt: P01903)

PDB	External Database	Details
Met 0	-	initiating methionine

B: 1 - 198 (UniProt: P04229)

PDB	External Database	Details
Met 0	-	initiating methionine

C: 102 - 120 (UniProt: P04233)

PDB	External Database	Details
Trp 107	Met 107	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	47642.8
All*	Total formula weight	47642.8

*Water molecules are not included.