5GJX

Crystal structure of DUCK MHC I for 2.06 angstrom

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	MHC class I antigen	polymer	273	31553.0	1	UniProt (Q6I7L2) Pfam (PF00129) Pfam (PF07654) In PDB	Anas platyrhynchos (Mallard)
2	B	Beta-2-microglobulin	polymer	104	11994.4	1	UniProt (Q14U75) Pfam (PF07654) In PDB	Anas platyrhynchos (Mallard)
3	C	ARG-LEU-ILE-GLN-ASN-SER-ILE-THR-ILE	polymer	9	1058.3	1	UniProt (by SIFTS) (Q9Q0U8) In PDB	unidentified influenza virus
4		water	water		18.0	169	Chemie (HOH)

Sequence modifications

A: 4 - 273 (UniProt: Q6I7L2)

PDB	External Database	Details
Met 1	-	expression tag
Glu 2	-	expression tag
Phe 3	-	expression tag
Gly 220	Ala 238	engineered mutation

B: 4 - 104 (UniProt: Q14U75)

PDB	External Database	Details
Met 1	-	expression tag
Glu 2	-	expression tag
Phe 3	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	3
	Total formula weight	44605.7
All*	Total formula weight	44605.7

*Water molecules are not included.