4QN3

Crystal structure of Neuraminidase N7

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Neuraminidase	polymer	390	42955.1	2	UniProt (Q20R18) Pfam (PF00064) In PDB	Influenza A virus (A/mallard/ALB/196/1996(H10N7))
2	C, E	beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		586.5	2	In PDB GlyTouCan (G15407YE)
3	D, F	2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	branched		424.4	2	In PDB GlyTouCan (G42666HT)
4	A, B	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
5	A, B	2-acetamido-2-deoxy-beta-D-glucopyranose	non-polymer		221.2	2	Chemie (NAG)
6		water	water		18.0	520	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	85910.1
Branched	Number of molecules	4
	Total formula weight	2021.9
Non-Polymers*	Number of molecules	4
	Total formula weight	522.6
All*	Total formula weight	88454.6

*Water molecules are not included.