Name: E.coli Tryptophan Synthase β Chain/Trp B Recombinant Protein (His Tag)
Synonyms: Tryptophan synthase beta chain;trpB
Expression host: E.coli
Sequence: Thr2-Ile397
Accesstion: P0A879
Species: E.coli
Mol_Mass: 43.8 kDa
AP_Mol_Mass: 38-48 kDa
Tag: N-His
Purity: > 95 % as determined by reducing SDS-PAGE.
Endotoxin:
Storage: Store at
Shipping: This product is provided as liquid. It is shipped at frozen temperature with blue ice/gel packs. Upon receipt, store it immediately at
Formulation: Supplied as a 0.2 μm filtered solution of 20mM Tris-HCl, 8% Sucrose, 0.05% Tween 80, pH 8.5.
Reconstitution: Not Applicable
Background: Tryptophan synthase is an enzyme that catalyzes the final two steps in the biosynthesis of tryptophan. It is commonly found in Eubacteria, Archaebacteria, Protista, Fungi, and Plantae, but is absent from animals such as humans. Tryptophan synthase typically exists as an α-ββ-α complex.The alpha subunit is responsible for the aldol cleavage of indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate: L-serine + 1-C-(indol-3-yl)glycerol 3-phosphate = L-tryptophan + D-glyceraldehyde 3-phosphate + H2O.The beta subunits catalyze the irreversible condensation of indole and serine to form tryptophan in a pyridoxal phosphate (PLP) dependent reaction. Their assembly into a complex leads to structural changes in both subunits resulting in reciprocal activation.
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