7P1S

Structure of KDNase from Trichophyton Rubrum in complex with 2,3-didehydro-2,3-dideoxy-D-glycero-D-galacto-nonulosonic acid.

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D (A, B, C, D)	Extracellular sialidase/neuraminidase	polymer	386	42214.9	4	UniProt (A0A178EUH2) Pfam (PF13859)	Trichophyton rubrum (Athlete's foot fungus Epidermophyton rubrum)
2	E, G, I, K (A, B, C, D)	2,6-anhydro-3-deoxy-D-glycero-D-galacto-non-2-enonic acid	non-polymer		250.2	4	Chemie (KFN)
3	F, H, J, L (A, B, C, D)	SODIUM ION	non-polymer		23.0	4	Chemie (NA)
4	M, N, O, P (A, B, C, D)	water	water		18.0	766	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	168859.8
Non-Polymers*	Number of molecules	8
	Total formula weight	1092.8
All*	Total formula weight	169952.6

*Water molecules are not included.