CMP-N-acetylneuraminic acid synthetase from Escherichia coli K1 is a bifunctional enzyme: identification of minimal catalytic domain for synthetase activity and novel functional domain for platelet-activating factor acetylhydrolase activity.

Abstract excerpt

Escherichia coli CMP-NeuAc synthetase (EC 2.7.7.43) catalyzes the synthesis of CMP-NeuAc from CTP and NeuAc, which is essential for the formation of capsule polysialylate for strain K1. Alignment of the amino acid sequence of E. coli CMP-NeuAc synthetase with those from other bacterial species revealed that the conserved motifs were located in its N termini, whereas the C terminus appeared to be redundant. Based...

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