D-ribitol-5-phosphate cytidylyltransferase () is an enzyme that catalyzes the chemical reaction
The enzyme characterised from Lactobacillus arabinosus combines cytidine triphosphate and D-ribitol-5-phosphate to give CDP-ribitol, with pyrophosphate (PPi) as a byproduct.
This enzyme is a transferase, specifically one transferring phosphorus-containing nucleotide groups (nucleotidyltransferases). The systematic name of this enzyme class is CTP:D-ribitol-5-phosphate cytidylyltransferase. Other names in common use include CDP ribitol pyrophosphorylase, cytidine diphosphate ribitol pyrophosphorylase, ribitol 5-phosphate cytidylyltransferase, and cytidine diphosphoribitol pyrophosphorylase.
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