ID   1.21.4.2
DE   glycine reductase.
CA   [thioredoxin]-disulfide + acetyl phosphate + H2O + NH4(+) =
CA   [thioredoxin]-dithiol + glycine + H(+) + phosphate.
CC   -!- The reaction is observed only in the direction of glycine reduction.
CC   -!- The enzyme from Eubacterium acidaminophilum consists of subunits A,
CC       B and C.
CC   -!- Subunit B contains selenocysteine and a pyruvoyl group, and is
CC       responsible for glycine binding and ammonia release.
CC   -!- Subunit A, which also contains selenocysteine, is reduced by
CC       thioredoxin, and is needed to convert the carboxymethyl group into a
CC       ketene equivalent, in turn used by subunit C to produce acetyl
CC       phosphate.
CC   -!- Only subunit B distinguishes this enzyme from EC 1.21.4.3 and
CC       EC 1.21.4.4.
DR   P50972, GRDA1_PEPAC;  Q6LH20, GRDA1_PHOPR;  O32518, GRDA2_PEPAC;
DR   Q6LH19, GRDA2_PHOPR;  P26971, GRDA_ACESD ;  A6TU46, GRDA_ALKMQ ;
DR   Q3A9J5, GRDA_CARHZ ;  A7FTE0, GRDA_CLOB1 ;  A7GCV1, GRDA_CLOBL ;
DR   P26970, GRDA_GOTPU ;  P52216, GRDA_PEPLI ;  Q67KE6, GRDA_SYMTH ;
DR   Q73PQ2, GRDA_TREDE ;  Q3A9J4, GRDB_CARHZ ;  P55793, GRDB_GOTPU ;
DR   Q9R4G8, GRDB_PEPAC ;  P52217, GRDB_PEPLI ;  Q67KE7, GRDB_SYMTH ;
DR   P54935, GRDC_PEPAC ;  Q47878, GRDD_PEPAC ;  Q9EV94, GRDE_ACESD ;
DR   Q9R4G7, GRDE_PEPAC ;
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