Activities in Family	CMP-NeuAc: α-2,8-polysialyltransferase (EC 2.4.3.-); CMP-NeuAc: alternating α-2,8/2,9-polysialyltransferase (EC 2.4.3.-);
Mechanism	Inverting
Note	These enzymes use CMP-beta-N-acetylneuraminate as the sugar donor
Statistics	GenBank accession (186); Uniprot accession (8); PDB accession (4); 3D entries (1); cryst (0)

Bacteria
Protein Name	EC#	Organism	GenBank	Uniprot	PDB/3D Carbohydrate Ligands Resolution (Å)
CMP-Neu5Ac: α-2,8-polysialyltransferase (SiaD;PSTMh;COK_0608) (partial)	2.4.3.-	Mannheimia haemolytica A2 / ATCC 29694	ACN54535.1 EEY13283.1	G4RIN4	5WC6[A,M] 2.20 5WC8[A,M] 2.75 5WCN[A,M] 3.00 5WD7[A,M] α-D-GlcpNSO36SO3-(1-4)-β-D-GlcpA-(1-4)-α-D-GlcpNSO33SO36SO3-(1-4)-α-L-IdopA2SO3-(1-4)-α-D-GlcpNSO36SO3-(1-1)-methyl 3.10
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