62310

Lipase from Rhizopus niveus

powder (fine), ≥1.5 U/mg

• Sinónimos: Triacylglycerol acylhydrolase, Triacylglycerol lipase
• CAS Number: 9001-62-1
• Número CE: 3.1.1.3 (BRENDA, IUBMB)
• Número CE: 232-619-9
• Número MDL: MFCD00131509
• Código UNSPSC: 12352204
• NACRES: NA.26

Propiedades

• origen biológico: fungus (Rhizopus niveus)
• Nivel de calidad: 100
• Formulario: powder (fine)
• actividad específica: ≥1.5 U/mg
• mol peso: M_r ~83000
• temp. de almacenamiento: 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-;
• Clave InChI: QWZUIMCIEOCSJF-CHHCPSLASA-N

Descripción

Descripción general

Lipases hydrolyze ester bonds of triacylglycerols and in some conditions, catalyze the synthesis of ester bonds by transesterification.[1] Lipase from Rhizopus niveus exists as a single polypeptide chain with a molecular mass of about 30-34kDa.[2]

Aplicación

Lipase from Rhizopus niveus has been used to determine the positional distribution of fatty acids within triacylglycerol by hydrolysis of the acyl ester linkage at C-1 and C-3. It has also been used to induce intragastric lipolysis and study its effects on felodipine (a medication) release from a hydrophilic, extended release tablet.[3][4]

Acciones bioquímicas o fisiológicas

Lipase from Rhizopus niveus is specifically used to produce cocoa butter substitutes.[1]

Tri-, di-, and monoglycerides are hydrolyzed (in decreasing order of rate).

Definición de unidad

1 U corresponds to the amount of enzyme which liberates 1 μmol fatty acid from a triglyceride per minute at pH 7.7 and 40°C (olive oil as substrate)]; 300 U as described above are equivalent to ~1 U using triolein, Cat. No. 62314, at pH 8.0 and 40°C as substrate.

Otras notas

Note: When triacetin is used as substrate, the pH is 7.4. Incubation time: 60 minutes.

Substrate specificity: preferentially hydrolyzes the 1- and 3-positions(middle to long fatty acids); optimum pH 5.0-7.0; optimum temperature 30-45°C; Selective enzymatic removal of protecting functions (C-terminal COOH function)[5]

Información de seguridad

• Pictogramas: GHS08
• Palabra de señalización: Danger
• Frases de peligro: H334
• Consejos de prudencia: P261 - P284 - P501
• Clasificaciones de peligro: Resp. Sens. 1
• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): WGK 1
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable
• Equipo de protección personal: Eyeshields, Gloves, type N95 (US)