Ontology highlight
ABSTRACT:
SUBMITTER: Huerta C
PROVIDER: S-EPMC3795796 | biostudies-literature | 2013 May
REPOSITORIES: biostudies-literature
Huerta Carlos C Grishin Nick V NV Zhang Hong H
Biochemistry 20130515 21
FMN adenylyltransferase (FMNAT) is an essential enzyme catalyzing the last step of a two-step pathway converting riboflavin (vitamin B2) to FAD, the ubiquitous flavocoenzyme. A structure-based mutagenesis and steady-state kinetic analysis of yeast FMNAT unexpectedly revealed that mutant D181A had a much faster turnover rate than the wild-type enzyme. Product inhibition analysis showed that wild-type FMNAT is strongly inhibited by FAD, whereas the D181A mutant has an attenuated product inhibition ...[more]