Accepted name: L-glutamine-phosphate cytidylyltransferase
Reaction: CTP + N5-phospho-L-glutamine = diphosphate + N5-(cytidine 5′-diphosphoramidyl)-L-glutamine
Systematic name: CTP:phosphoglutamine cytidylyltransferase
Comments: The enzyme, characterized from the bacterium Campylobacter jejuni, is involved in formation of a unique O-methyl phosphoramidate modification on specific sugar residues within the bacterium’s capsular polysaccharides.
1.  Taylor, Z.W., Brown, H.A., Holden, H.M. and Raushel, F.M. Biosynthesis of nucleoside diphosphoramidates in Campylobacter jejuni. Biochemistry 56 (2017) 6079–6082. [PMID: 29023101]
[EC created 2018]