ID 4.4.1.11 DE methionine gamma-lyase. AN L-methioninase. AN methionine lyase. CA H2O + L-methionine = 2-oxobutanoate + methanethiol + NH4(+). CC -!- The enzyme cleaves a carbon-sulfur bond, releasing methanethiol and CC an unstable enamine product that tautomerizes to an imine form, which CC undergoes a hydrolytic deamination to form 2-oxobutanoate and CC ammonia. CC -!- The latter reaction, which can occur spontaneously, can also be CC catalyzed by EC 3.5.99.10. CC -!- The enzyme is involved in L-methionine catabolism. DR Q8RDT4, MEGL_FUSNN ; Q8L0X4, MEGL_FUSNP ; Q7MX71, MEGL_PORGI ; DR A0A0J6G7P5, MEGL_PSEDM ; P13254, MEGL_PSEPU ; Q826W3, MEGL_STRAW ; DR Q73KL7, MEGL_TREDE ; Q9SGU9, MGL_ARATH ; //