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4.2.1.20: tryptophan synthase

This is an abbreviated version!
For detailed information about tryptophan synthase, go to the full flat file.

Word Map on EC 4.2.1.20

Reaction

1-C-(indol-3-yl)glycerol 3-phosphate
=
indole
+
D-glyceraldehyde 3-phosphate

Synonyms

alpha2beta2 tryptophan synthase, alphaTS, AtTSB1, beta subunit of tryptophan synthase, indoleglycerol phosphate aldolase, It-TSA, L-serine hydro-lyase (adding indoleglycerol-phosphate), L-tryptophan synthetase, PtTSA, Rv1612, synthase, tryptophan, TrB, Trp synthase, Trp synthase beta, TrpA, trpB, TrpB1, TrpB2, TrpB2a, TrpB2i, TrpB2o, TRPS, tryptophan desmolase, tryptophan synthase, tryptophan synthase alpha subunit, tryptophan synthase alpha-subunit, tryptophan synthase alpha2beta2 complex, tryptophan synthase beta, tryptophan synthase beta 1, tryptophan synthase beta subunit, tryptophan synthetase, TS, TSA, TSase, TSB, TSB1, TSbeta

ECTree

     4 Lyases
         4.2 Carbon-oxygen lyases
             4.2.1 Hydro-lyases
                4.2.1.20 tryptophan synthase

Molecular Weight

Molecular Weight on EC 4.2.1.20 - tryptophan synthase

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MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
107800 - 116500
-
different TrpA-TrpB2i complexes, gel filtration
127000
2 * 27700 (alpha) + 2 * 67400 (beta), alpha,beta,beta,alpha heterotetramer, calculated from sequence
134500
-
gel filtration
140000
140600
heterotetramer from subunits TrpA and TrpB1, calculated from amino acid sequence
153000
-
sedimentation equilibrium centrifugation
20800
2 * 20800 + 2 * 67400, heterotetramer from subunits TrpA and TrpB1, SDS-PAGE
25500
-
2 * 25500 + 2 * 41750, gel filtration
26200
-
recombinant TrpA monomer, sedimentation equilibrium
27500
-
alpha-subunit monomer, ultracentrifugation sedimentation equilibrium
275000
-
2 * 275000 + 2 * 42500, recombinant alpha2beta2 enzyme complex, SDS-PAGE
27700
28800
-
alpha subunit, x * 28800, calculation from amino acid sequence, x * 31000, SDS-PAGE
29000
31000
-
alpha subunit, x * 28800, calculation from amino acid sequence, x * 31000, SDS-PAGE
33000
-
x * 33000 (alpha) + x * 51000 (beta), SDS-PAGE
41750
-
2 * 25500 + 2 * 41750, gel filtration
42500
42600
43000
-
89000, B2 subunit, polyacrylamide gel electrophoresis, 2 * 43000, B subunit, SDS-PAGE
43530
calculated from amino acid sequence
49300
2 * 27700 (subunit TrpA) + 2 * 49300 (subunit TrpB2), calculated from sequence, tryptophan synthase is composed of subunit TrpA and subunit TrpB. Thermococcus kodakarensis possess two paralogs of subunit B, TrpB1 and TrpB2. TrpB2 catalyzes the TrpB reaction but does not interact with TrpA as in the case of TrpB1
50000
-
SDS-PAGE, recombinant protein
50220
-
mass spectroscopy
51000
-
x * 33000 (alpha) + x * 51000 (beta), SDS-PAGE
67400
2 * 20800 + 2 * 67400, heterotetramer from subunits TrpA and TrpB1, SDS-PAGE
74000
77000
-
2 * 77000, sedimentation equilibrium in 6 M guanidine hydrochloride
82000
-
2 * 39700-41000, beta subunit, 1 * 82000, beta2 subunit, ultracentrifugation, SDS-PAGE
84000 - 88000
-
beta-subunit dimer, ultracentrifugation sedimentation equilibrium
89000
-
89000, B2 subunit, polyacrylamide gel electrophoresis, 2 * 43000, B subunit, SDS-PAGE
91000
-
recombinant TrpB1 dimer, sedimentation equilibrium
98000
-
recombinant TrpB2 dimer, sedimentation equilibrium
additional information
-
determination of Stoke's radii of native, stable intermediates and unfolded conformers of the purified recombinant alpha-subunit dependent on urea concentrations