5KUY

Influenza hemagglutinin H3 A/Hong Kong/1/1968 in complex with designed inhibitor protein HSB.2A

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	polymer	323	35506.9	3	UniProt (Q91MA7) Pfam (PF00509)	Influenza A virus (strain A/Hong Kong/1/1968 H3N2)
2	B, D, F (B, D, F)	Hemagglutinin HA2	polymer	177	20284.4	3	UniProt (Q91MA7) Pfam (PF00509)	Influenza A virus (strain A/Hong Kong/1/1968 H3N2)
3	G, H, I (G, H, I)	Designed influenza inhibitor HSB.2A	polymer	97	10861.1	3		synthetic construct
4	J, K, L, M, O (J, K, L, M, O)	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		424.4	5	In PDB GlyTouCan (G42666HT)
5	N (N)	beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		586.5	1	In PDB GlyTouCan (G15407YE)
6	P, Q, R, S, T... (A, B, D, E)	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	6	Chemie (NAG)
7	AA, BA, CA, V, W... (F, G, H, A, B...)	water	water		18.0	470	Chemie (HOH)

Sequence modifications

A, C, E: 11 - 329 (UniProt: Q91MA7)

PDB	External Database	Details
Ala 7	-	expression tag
Asp 8	-	expression tag
Pro 9	-	expression tag
Gly 10	-	expression tag

B, D, F: 330 - 505 (UniProt: Q91MA7)

PDB	External Database	Details
Gly 452	Arg 468	engineered mutation
Ser 506	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	9
	Total formula weight	199957.3
Branched	Number of molecules	6
	Total formula weight	2708.5
Non-Polymers*	Number of molecules	6
	Total formula weight	1327.2
All*	Total formula weight	203993.1

*Water molecules are not included.