7P1O

Structure of KDNase from Aspergillus Terrerus in complex with 2-keto-3-deoxynononic 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 (X, A)	Sialidase domain-containing protein	polymer	410	44602.0	2	UniProt (Q0CMX0) Pfam (PF13088)	Aspergillus terreus (strain NIH 2624 / FGSC A1156)
2	C (X)	GLYCEROL	non-polymer		92.1	1	Chemie (GOL)
3	D, E (X, A)	deamino-alpha-neuraminic acid	non-polymer		268.2	2	Chemie (KDM)
4	F (A)	CHLORIDE ION	non-polymer		35.5	1	Chemie (CL)
5	G, H (X, A)	water	water		18.0	775	Chemie (HOH)

Sequence modifications

X, A: 17 - 403 (UniProt: Q0CMX0)

PDB	External Database	Details
Met -6	-	initiating methionine
Gly -5	-	expression tag
Ser -4	-	expression tag
Ser -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag
His 1	-	expression tag
His 2	-	expression tag
His 3	-	expression tag
Ser 4	-	expression tag
Ser 5	-	expression tag
Gly 6	-	expression tag
Leu 7	-	expression tag
Val 8	-	expression tag
Pro 9	-	expression tag
Arg 10	-	expression tag
Gly 11	-	expression tag
Ser 12	-	expression tag
His 13	-	expression tag
Met 14	-	expression tag
Ala 15	-	expression tag
Ser 16	-	expression tag
Snn 128	Asp 128	modified residue

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	89204.1
Non-Polymers*	Number of molecules	4
	Total formula weight	664.0
All*	Total formula weight	89868.1

*Water molecules are not included.