4ZXK

Carbohydrate binding domain from Streptococcus pneumoniae NanA sialidase

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Sialidase A	polymer	188	21066.7	2	UniProt (P62575) Pfam (PF02973)	Streptococcus pneumoniae	Neuraminidase A
2	C, D (A, B)	water	water		18.0	318	Chemie (HOH)

Sequence modifications

A, B: 121 - 305 (UniProt: P62575)

PDB	External Database	Details
Gly 118	-	expression tag
Ala 119	-	expression tag
Met 120	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	42133.3
All*	Total formula weight	42133.3

*Water molecules are not included.