ID   4.3.1.19
DE   Threonine ammonia-lyase.
AN   L-serine dehydratase.
AN   L-threonine deaminase.
AN   L-threonine dehydratase.
AN   L-threonine hydro-lyase (deaminating).
AN   Serine deaminase.
AN   Threonine deaminase.
AN   Threonine dehydrase.
AN   Threonine dehydratase.
CA   L-threonine = 2-oxobutanoate + NH(3).
CF   Pyridoxal 5'-phosphate.
CC   -!- The protein from Pseudomonas putida does not require pyridoxal-
CC       phosphate.
CC   -!- The enzyme from a number of sources also acts on L-serine,
CC       cf. EC 4.3.1.17.
CC   -!- The reaction catalyzed probably involves initial elimination of water
CC       (hence the enzyme's original classification as EC 4.2.1.16), followed
CC       by isomerization and hydrolysis of the product with C-N bond
CC       breakage.
CC   -!- Formerly EC 4.2.1.16.
PR   PROSITE; PDOC00149;
DR   Q9KC63, ILVA_BACHD ;  P37946, ILVA_BACSU ;  P53607, ILVA_BURM1 ;
DR   Q04513, ILVA_CORGL ;  P04968, ILVA_ECOLI ;  P46493, ILVA_HAEIN ;
DR   Q02145, ILVA_LACLA ;  P66898, ILVA_MYCBO ;  Q9X7F1, ILVA_MYCLE ;
DR   P66897, ILVA_MYCTU ;  Q9CKJ2, ILVA_PASMU ;  P20506, ILVA_SALTY ;
DR   Q2FF63, ILVA_STAA3 ;  Q2FWJ9, ILVA_STAA8 ;  Q2YUE8, ILVA_STAAB ;
DR   Q5HEE0, ILVA_STAAC ;  Q99SJ1, ILVA_STAAM ;  Q7A4H2, ILVA_STAAN ;
DR   Q3V7T5, ILVA_STAAR ;  Q3V7T4, ILVA_STAAS ;  Q8NVI8, ILVA_STAAW ;
DR   Q5HMF5, ILVA_STAEQ ;  Q8CNK9, ILVA_STAES ;  Q4L7U4, ILVA_STAHJ ;
DR   Q49Z16, ILVA_STAS1 ;  Q0VCW4, SDHL_BOVIN ;  P20132, SDHL_HUMAN ;
DR   Q8VBT2, SDHL_MOUSE ;  P09367, SDHL_RAT   ;  Q96GA7, SDSL_HUMAN ;
DR   Q8R238, SDSL_MOUSE ;  P25379, STDH_YEAST ;  P0AGF8, TDCB_ECO57 ;
DR   P0AGF7, TDCB_ECOL6 ;  P0AGF6, TDCB_ECOLI ;  P11954, TDCB_SALTY ;
DR   P0AGF9, TDCB_SHIFL ;  Q2FH01, TDCB_STAA3 ;  Q2FYJ3, TDCB_STAA8 ;
DR   Q2YY67, TDCB_STAAB ;  Q5HFY5, TDCB_STAAC ;  Q99U50, TDCB_STAAM ;
DR   Q7A5L8, TDCB_STAAN ;  Q6GGX0, TDCB_STAAR ;  Q6G9C4, TDCB_STAAS ;
DR   Q8NWQ4, TDCB_STAAW ;  Q9ZSS6, THD1_ARATH ;  Q39469, THD1_CICAR ;
DR   P25306, THD1_SOLLC ;  P31212, THD1_SOLTU ;  O42615, THDH_BLAAD ;
DR   O94634, THDH_SCHPO ;  P00927, THDH_YEAST ;  P55664, Y4TJ_RHISN ;
//