3VUN

Crystal structure of a influenza A virus (A/Aichi/2/1968 H3N2) hemagglutinin in C2 space group.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, C, E (A, C, E)	Hemagglutinin HA1 chain	polymer	329	36238.7	3	UniProt (P03437) Pfam (PF00509)	Influenza A virus
2	B, D, F (B, D, F)	Hemagglutinin HA2 chain	polymer	175	20198.3	3	UniProt (P03437) Pfam (PF00509)	Influenza A virus
3	G, J, M (G, J, M)	beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-6)-[2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-3)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose	branched		1625.5	3	In PDB GlyTouCan (G27919IH)
4	H, K, N (H, K, N)	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		424.4	3	In PDB GlyTouCan (G42666HT)
5	I, L, O (I, L, O)	alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		748.7	3	In PDB GlyTouCan (G22573RC)
6	P, Q, R, S, T... (A, B, C, D, E...)	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	6	Chemie (NAG)

Sequence modifications

A, C, E: 1 - 329 (UniProt: P03437)

PDB	External Database	Details
Ser 144	Gly 160	SEE REMARK 999
Val 182	Ile 198	SEE REMARK 999

B, D, F: 1 - 175 (UniProt: P03437)

PDB	External Database	Details
Asp 132	Glu 477	SEE REMARK 999

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	169310.9
Branched	Number of molecules	9
	Total formula weight	8395.7
Non-Polymers*	Number of molecules	6
	Total formula weight	1327.2
All*	Total formula weight	179033.9

*Water molecules are not included.