ID 2.3.2.21 DE cyclo(L-tyrosyl-L-tyrosyl) synthase. AN cyclodityrosine synthase. CA 2 L-tyrosyl-tRNA(Tyr) = cyclo(L-tyrosyl-L-tyrosyl) + 2 tRNA(Tyr). CC -!- The reaction proceeds following a ping-pong mechanism forming a CC covalent intermediate between an active site serine and the first CC L-tyrosine residue. CC -!- The protein, from the bacterium Mycobacterium tuberculosis, also CC forms small amounts of cyclo(L-tyrosyl-L-phenylalanyl). DR P9WPF8, CDTS_MYCTO ; P9WPF9, CDTS_MYCTU ; //