S1826

Sialic Acid Aldolase from Escherichia coli K12

recombinant, expressed in E. coli BL21, ≥3.0 units/mg protein

• Synonym(s): N-Acetylneuraminate lyase, N-Acetylneuraminate pyruvate-lyase (N-acetyl-D-mannosamine-forming)
• UNSPSC Code: 12352204
• NACRES: NA.54
• EC Number: 4.1.3.3 (BRENDA, IUBMB)
• MDL number: MFCD00131656
• Specific activity: ≥3.0 units/mg protein
• Recombinant: expressed in E. coli BL21

Properties

• recombinant: expressed in E. coli BL21
• Quality Segment: 200
• form: lyophilized powder
• specific activity: ≥3.0 units/mg protein
• mol wt: 33.4 kDa
• shipped in: dry ice
• storage temp.: −20°C

Description

General description

Sialic acid aldolases, or N-acetylneuraminate lyases, catalyze the reversible aldol cleavage of N-acetylneuraminic acid to form pyruvate and N-acetyl-D-mannosamine. In nature, N-acetylneuraminate lyase mainly occurs in pathogens.

Application

Sialic acid aldolase can be used to synthesize unnatural sugars of C(6) to C(10) for the design of antagonists and inhibitors of glycoenzymes.

Physical form

Lyophilized powder containing Tris-HCl and NaCl

Analysis Note

Enzymatic activity assays are performed in Tris-HCl buffer (100 mM, pH 7.5) containing Neu-5-Ac (10 mM) at 37 °C for 15 min and analyzed using capillary electrophoresis with UV detection at 200 nm.

Other Notes

One unit will catalyze the formation of 1.0 μmol Neu-5-Ac from Man-N-Ac and pyruvate per minute at 37°C at pH 8.0.

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H315,H319,H335
• pcodes: P261 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Storage Class: 11 - Combustible Solids
• wgk: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable