3BEV

11mer Structure of an MHC class I molecule from B21 chickens illustrate promiscuous peptide binding

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A (A)	Major histocompatibility complex class I glycoprotein haplotype B21	polymer	274	31131.6	1	UniProt (Q95601) Pfam (PF00129) Pfam (PF07654)	Gallus gallus (chicken)	MHC class I molecule precursor, MHC class I alpha chain 2, MHC class I antigen, MHC class I glycoprotein
2	B (B)	Beta-2-microglobulin	polymer	99	11193.6	1	UniProt (P21611) Pfam (PF07654)	Gallus gallus (chicken)
3	C (C)	Hemoglobin subunit alpha-A	polymer	11	1177.2	1	UniProt (P01994)		Hemoglobin alpha-A chain, Alpha-A-globin
4	D, E, F (A, B, C)	water	water		18.0	193	Chemie (HOH)

Sequence modifications

A: 1 - 270 (UniProt: Q95601)

PDB	External Database	Details
Arg 271	-	expression tag
Ser 272	-	expression tag
Gly 273	-	expression tag
Gly 274	-	expression tag

B: 1 - 98 (UniProt: P21611)

PDB	External Database	Details
Met 0	-	initiating methionine

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	43502.4
All*	Total formula weight	43502.4

*Water molecules are not included.