T7927

L-Tyrosin-Decarboxylase-Apoenzym aus Streptococcus faecalis

<0.005 unit/mg solid (without pyridoxal 5-phosphate), ≥0.05 unit/mg solid (with excess pyridoxal 5-phosphate)

• Synonym(e): L-(−)-Tyrosin-Apodecarboxylase, TAD
• CAS-Nummer: 9002-09-9
• UNSPSC Code: 12352204
• NACRES: NA.54
• EC Number: 232-652-9
• MDL number: MFCD00131472
• EG-Nummer: 4.1.1.25 (BRENDA, IUBMB)
• Specific activity: ≥0.05 unit/mg solid (with excess pyridoxal 5-phosphate), <0.005 unit/mg solid (without pyridoxal 5-phosphate)
• Biological source: Streptococcus faecalis

Eigenschaften

• biological source: Streptococcus faecalis
• Quality Level: 200
• form: powder
• specific activity: ≥0.05 unit/mg solid (with excess pyridoxal 5-phosphate), <0.005 unit/mg solid (without pyridoxal 5-phosphate)
• storage temp.: −20°C

Beschreibung

Application

L-Tyrosine decarboxylase apoenzyme from Streptococcus faecalis has been used:

• in a study to purify and characterize tyrosine decarboxylase and aromatic-L-amino-acid decarboxylase[1]
• in a study to investigate the stereospecificity of sodium borohydride reduction of tyrosine decarboxylase[2]
• in protein synthesis studies

Biochem/physiol Actions

L-Tyrosine Decarboxylase Apoenzyme is an aromatic L-amino acid decarboxylase.[3] The enzyme activity of tyrosine decarboxylase (TDC) is dependent on the cofactor pyridoxal 5-phosphate (PLP).[4] It catalyzes the decarboxylation of dihydroxyphenylalanine.[3]

Other Notes

Dried cells grown on vitamin B₆-deficient medium.

One unit will liberate 1.0 μmole of CO₂ from L-tyrosine per min at pH 5.5 at 37 °C.

Sicherheitshinweise

• Lagerklasse: 11 - Combustible Solids
• wgk: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)