>tr|A0A371QU94|A0A371QU94_9CREN Cytidylate kinase OS=Pyrobaculum aerophilum GN=cmk MVVIAVSGQPGSGKTTIAREIARVLGLPLVSSGLLFREMAARMGMDFIEFHKYAETNPDI DKKVDSLAIERAKAGDVVLEGHLTAWIVRPYADVCIYLKASLETRARRVALRDGKSLQDA LREVAEREELNRRRYLSIYGIDINDLSIFDLVLDTSHLSVNDAVRISLDYTCTSLSFKYS RKIC