Dispensability of the second Cys for phycoviolobilin formation by unusual ring D fixation in the cyanobacteriochrome
The study shows the second Cys in DXCF cyanobacteriochrome GAF domains is not essential for isomerization activity, which involves multiple residues fixing the C- and D-rings of the chromophore.
bioRxiv · Dec 27, 2020Biochemistry