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Merck
CN

CS0980

Sigma-Aldrich

几丁质酶检测试剂盒

sufficient for 100 multiwell tests

别名:

Chitinase Activity Detection Kit

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About This Item

UNSPSC代码:
12161503
NACRES:
NA.54

用途

sufficient for 100 multiwell tests

质量水平

吸光度比值

405 nm (Absorbance)

运输

wet ice

储存温度

2-8°C

基因信息

一般描述

几丁质酶检测试剂盒基于几丁质酶底物的酶促水解。 水解释放的对硝基苯酚可在405nm下进行比色测定。

应用

几丁质酶检测试剂盒已被用于筛选来自酵母、Metschnikowia fructicola、 细菌内生菌3A12 、以及 艰难梭菌 孢子中的重组几丁质酶的几丁质酶活性。

该试剂盒提供了有效检测真菌和细菌生长培养基、巨噬细胞裂解物、以及纯化酶制剂中几丁质酶活性所需的所有试剂。此外,该试剂盒还提供三种不同的底物,可用于检测多种类型的几丁质酶活性:
  • 4-硝基苯基-N,N′-二乙酰基β-D-几丁质-底物,适用于外切几丁质酶活性检测(几丁二糖酶活性)
  • 4-硝基苯基-N-乙酰基-β-D-葡萄糖胺-底物,适用于外切几丁质酶活性检测(β-N-乙酰氨基葡萄糖苷酶活性)
4-硝基苯基β-D-N,N′,N′′-三乙酰基壳三糖-底物, 适用于内切几丁质酶活性检测

生化/生理作用

几丁质酶可催化N-乙酰氨基葡糖的生物聚合物中(主要在几丁质中)存在的β-1→ 4-糖苷键的水解裂解。几丁质酶广泛分布在生物体中,并存在于真菌、细菌、寄生虫、植物和动物中。它们根据氨基酸序列的相似性可分类为不同的家族。

几丁质酶也可基于它们对几丁质底物的酶促作用而进行分类。内切蛋白酶被定义为可催化几丁质链内部点的随机切割的酶。外切蛋白酶可催化从几丁质的非还原末端逐渐释放乙酰壳霉二糖或N-乙酰葡糖胺,并分别称为壳二糖苷酶和β-N-乙酰葡糖胺酶。

几丁质酶在不同的生物体中发挥不同的功能。在细菌中,它们主要参与营养过程。在酵母和各种真菌中,这些酶参与形态发生。在动物和植物中,几丁质酶主要在防御病原体攻击中发挥作用。

分析说明

该试剂盒基于几丁质酶底物的酶促水解进行测定。水解释放的对硝基苯酚(4-硝基苯酚),在碱性pH下电离后可以在405nm下进行比色测定。

仅试剂盒组分

产品编号
说明

  • Assay Buffer 20 mL

  • 4-Nitrophenyl N-acetyl-β-D-glucosaminide 10 mg

  • 4-Nitrophenyl N,N′-diacetyl-β-D-chitobioside 5 mg

  • 4-Nitrophenyl β-D-N,N′N′′-triacetylchitotriose 1 mg

  • Chitinase from Trichoderma viride 1 mg

  • p-Nitrophenol Solution, 10 mM 1 mL

  • Sodium Carbonate 1 g

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象形图

Health hazard

警示用语:

Danger

危险分类

Carc. 2 - Eye Irrit. 2 - Resp. Sens. 1 - STOT RE 2 Oral

靶器官

Liver,Kidney

储存分类代码

10 - Combustible liquids

法规信息

常规特殊物品

从最新的版本中选择一种:

分析证书(COA)

Lot/Batch Number

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. What has Product CS0980, Chitinase Assay Kit, been tested on?  

    This kit has been tested on Trichoderma viride, Streptomyces griseus and human macrophages.

  6. What is the recommended substrate concentration for Product CS0980, Chitinase Assay Kit?  

    A 1mg/mL substrate solution is recommended. If required, the 4-Nitrophenyl-beta-D-N,N',N''-triacetylchitotriose and the 4-Nitrophenyl N,N'-diacetyl-beta-D-chitobioside can be used at lower concentrations in the reaction (0.5 or 0.2mg/mL respectively).

  7. How do you make the substrate in Product CS0980, Chitinase Assay Kit, go into solution?

    The substrates do not dissolve easily in the buffer.  It may take ~1 hour of shaking to completely dissolve the substrates. Use of a larger container (15 mL) may aid dissolution.

  8. What is the stability of the Product CS0980, Chitinase Assay Kit, substrate solution (s)?

    The substrate solution(s) should be stored on ice during the experiment.  For storage up to one month, freeze at -20°C or below.

  9. How many reactions will each substrate in Product CS0980, Chitinase Assay Kit, provide?

    If used at a concentration of 1mg/mL: *  4-Nitrophenyl N-acetyl-b-D-glucosaminide (Product No. N9376) -100 reactions; * 4-Nitrophenyl N,N’-diacetyl-b-D-chitobioside (Product No. N6133) -50 reactions; * 4-Nitrophenyl-b-D-N,N',N''-triacetylchitotriose (Product No. N8638) -10 reactions.

  10. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

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Acta crystallographica. Section F, Structural biology and crystallization communications, 67(Pt 3), 340-343 (2011-03-12)
A chitinase has been isolated and purified from Crocus vernus corms. N-terminal amino-acid sequence analysis of the approximately 30 kDa protein showed 33% identity to narbonin, a seed protein from Vicia narbonensis L. The C. vernus chitinase was crystallized by the
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