ID   5.3.3.23
DE   S-methyl-5-thioribulose 1-phosphate isomerase.
AN   5-methylthioribulose-1-phosphate isomerase.
CA   (1) S-methyl-5-thio-D-ribulose 1-phosphate = S-methyl-1-thio-D-xylulose
CA   5-phosphate.
CA   (2) S-methyl-5-thio-D-ribulose 1-phosphate = S-methyl-1-thiol-D-ribulose
CA   5-phosphate.
CC   -!- The enzyme, characterized from the bacterium Rhodospirillum rubrum,
CC       participates in methionine salvage from S-methyl-5'-thioadenosine.
CC   -!- It is a RuBisCO-like protein (RLP) that is not capable of carbon
CC       fixation, and catalyzes an isomerization reaction that converts
CC       S-methyl-5-thio-D-ribulose 1-phosphate to a 3:1 mixture of S-methyl-
CC       1-thioxylulose 5-phosphate and S-methyl-1-thioribulose 5-phosphate.
CC   -!- The reaction is an overall 1,3-proton transfer, which likely consists
CC       of two 1,2-proton transfer events.
DR   Q2RSU7, RLP_RHORT  ;
//