Metamorphic protein IscU changes conformation by cis-trans isomerizations of two peptidyl-prolyl peptide bonds.
Dai Z, Tonelli M, Markley JL. Metamorphic protein IscU changes conformation by cis-trans isomerizations of two peptidyl-prolyl peptide bonds. Biochemistry. 2012 Dec 04; 51(48):9595-602.