4XYX

NanB plus Optactamide

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A	Sialidase B	polymer	660	73778.1	1	UniProt (Q54727) Pfam (PF02973) Pfam (PF02012) Pfam (PF13088) In PDB	Streptococcus pneumoniae	Neuraminidase B
2	A	Optactamide	non-polymer		287.7	1	Chemie (43Z)
3	A	PHOSPHATE ION	non-polymer		95.0	18	Chemie (PO4)
4		water	water		18.0	284	Chemie (HOH)

Sequence modifications

A: 40 - 697 (UniProt: Q54727)

PDB	External Database	Details
Gly 643	Asp 643	conflict
Leu 698	-	expression tag
Glu 699	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	73778.1
Non-Polymers*	Number of molecules	19
	Total formula weight	1997.2
All*	Total formula weight	75775.3

*Water molecules are not included.