2V73

The structure of the family 40 CBM from C. perfringens NanJ in complex with a sialic acid containing molecule

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)	PUTATIVE EXO-ALPHA-SIALIDASE	polymer	191	21188.7	2	UniProt (Q0TTQ4) Pfam (PF02973) UniProt (by SIFTS) (A0A0H2YT71)	CLOSTRIDIUM PERFRINGENS	CBM40
2	C, D (A)	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
3	E (A)	N-acetyl-alpha-neuraminic acid	non-polymer		309.3	1	Chemie (SIA)
4	F, G (A, B)	water	water		18.0	218	Chemie (HOH)

Sequence modifications

A, B: -3 - 0 (PDB: 2V73)
A, B: 1 - 187 (UniProt: Q0TTQ4)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	42377.4
Non-Polymers*	Number of molecules	3
	Total formula weight	389.4
All*	Total formula weight	42766.8

*Water molecules are not included.