7P1F

Structure of KDNase from Aspergillus terrerus 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	B, A	Sialidase domain-containing protein	polymer	410	44602.0	2	UniProt (Q0CMX0) Pfam (PF13088) In PDB	Aspergillus terreus (strain NIH 2624 / FGSC A1156)
2	B, A	2,6-anhydro-3-deoxy-D-glycero-D-galacto-non-2-enonic acid	non-polymer		250.2	2	Chemie (KFN)
3	B, A	GLYCEROL	non-polymer		92.1	4	Chemie (GOL)
4	B, A	CALCIUM ION	non-polymer		40.1	2	Chemie (CA)
5		water	water		18.0	872	Chemie (HOH)

Sequence modifications

B, 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	8
	Total formula weight	948.9
All*	Total formula weight	90153.0

*Water molecules are not included.