Gamma-glutamyl hydrolase (GGH), partial, human, recombinant

Organism: Homo sapiens (Human). Source: E.coli. Expression Region: 219-293aa. Protein Length: Partial. Tag Info: N-terminal 10xHis-GST-tagged and C-terminal Myc-tagged. Target Protein Sequence: TNTDGKIEFI STMEGYKYPV YGVQWHPEKA PYEWKNLDGI SHAPNAVKTA FYLAEFFVNE ARKNNHHFKS ESEEE. Purity: Greater than 85% as determined by SDS-PAGE. Endotoxin: Not test. Biological Activity: n/a. Form: Liquid or Lyophilized powder. Buffer: If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0. Reconstitution: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20 °C/-80 °C. Our default final concentration of glycerol is 50%. Customers could use it as reference. Storage: The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20 °C/-80 °C. The shelf life of lyophilized form is 12 months at -20 °C/-80 °C. Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4 °C for up to one week. Relevance: Hydrolyzes the polyglutamate sidechains of pteroylpolyglutamates. Progressively removes gamma-glutamyl residues from pteroylpoly-gamma-glutamate to yield pteroyl-alpha-glutamate (folic acid) and free glutamate. May play an important role in the bioavailability of dietary pteroylpolyglutamates and in the metabolism of pteroylpolyglutamates and antifolates. Reference: "Molecular modeling and site-directed mutagenesis define the catalytic motif in human gamma -glutamyl hydrolase." Chave K.J., Auger I.E., Galivan J., Ryan T.J. J. Biol. Chem. 275:40365-40370(2000). Function: nan