InterPro domain: IPR004794

This entry describes the riboflavin biosynthesis protein (ribD) as found in Escherichia coli. The N-terminal domain includes the conserved zinc-binding site region that is shared by proteins such as cytosine deaminase, mammalian apolipoprotein B mRNA editing protein, blasticidin-S deaminase, and Bacillus subtilis competence protein comEB. The C-terminal domain is homologous to the full length of yeast HTP reductase, a protein required for riboflavin biosynthesis. A number of archaeal proteins that may be related to the riboflavin biosynthesis protein contain only the C-terminal domain.