62288

Lipase B Candida antarctica, recombinant from Aspergillus oryzae

powder, beige, ~9 U/mg

• Numéro CAS: 9001-62-1
• Numéro de classification (Commission des enzymes): 3.1.1.3 (BRENDA, IUBMB)
• Numéro CE : 232-619-9
• Numéro MDL: MFCD00131509
• Code UNSPSC : 12352204
• Nomenclature NACRES : NA.54

Propriétés

• Produit recombinant: expressed in Aspergillus oryzae
• Niveau de qualité: 100
• Forme: powder
• Activité spécifique: ~9 U/mg
• Poids mol.: 33 kDa
• Couleur: beige
• Température de stockage: 2-8°C
• InChI: 1S/C11H9N3O2.Na/c15-8-4-5-9(10(16)7-8)13-14-11-3-1-2-6-12-11;/h1-7,16H,(H,12,14);/q;+1/b13-9-;
• Clé InChI: QWZUIMCIEOCSJF-CHHCPSLASA-N

Description

Description générale

Candida antarctica lipase B (CalB) is structurally similar to several other lipases and has a flexible lid. It is made up of 317 amino acids and has a molecular weight of 33 kDa. Lipase B is a member of the alpha/beta hydrolase-fold family.

Application

Lipase B Candida antarctica, recombinant from Aspergillus oryzae has been used:

• as a standard to characterize the enzymatic properties of D5-CalB
• as an efficient biocatalyst to start the reaction to obtain (R)-ester via esterification of racemic secondary alcohol
• to investigate a “green” recycling route for polybutylene succinate (PBS) based on reactive extrusion
• to compare the esterification yield with adsorbed CaLB (aCaLB) and covalently immobilized CaLB (cCaLB)

Lipases are used industrially for the resolution of chiral compounds and the transesterification production of biodiesel.

Actions biochimiques/physiologiques

Lipases catalyze the hydrolysis of triacylglycerols into glycerol and free fatty acids.
Candida antarctica lipase B (CALB) possesses wide substrate specificity, high activity and high enantioselectivity, hence it is considered as a major enzyme in biotechnology. It also has the capability to perform in aqueous and non-aqueous reaction environments. CALB is used in transesterification, kinetic resolution and polymerization reactions.

Lipase B from Candida antarctica has been shown to be an effective catalyst for the synthesis of esters of ethyl D-glucopyranoside from fatty acids larger than octanoic acid. It has also been found to catalyze a wide variety of organic reactions including many different regio- and enantio-selective syntheses.

Définition de l'unité

1 U corresponds to the amount of enzyme which liberates 1 μmol butyric acid per minute at pH 8.0 and 40°C (tributyrin, Cat. No. 91010, as substrate)

Informations sur la sécurité

• Pictogrammes: GHS08
• Mention d'avertissement: Danger
• Mentions de danger: H334
• Conseils de prudence: P261 - P284 - P501
• Classification des risques: Resp. Sens. 1
• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Gloves, type N95 (US)