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安全信息

L7880

Sigma-Aldrich

β-乳球蛋白 A 来源于牛奶

≥90% (PAGE)

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About This Item

CAS号:
50863-92-8
MDL编号:
MFCD00130636
UNSPSC代码:
12352202
NACRES:
NA.61

生物来源

bovine milk

质量水平

200

方案

≥90% (PAGE)

表单

powder

分子量

18,363 Da by calculation

技术

HPLC: suitable

UniProt登记号

P02754

储存温度

2-8°C

基因信息

bovine ... LGB(280838)

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一般描述

作为脂质运载蛋白家族的一员，βLg是由162个氨基酸组成的小分子蛋白质，分子量∼18,400 Da，具有八链β-桶状（链 A-H）结构，后接一个含有3转角的α-螺旋和构成一部分二聚化界面的最后一条β-链（链 I）。
奶牛乳汁中含有蛋白质 β-乳球蛋白 (BLG)。它天然存在于一些遗传变异中，最普遍的牛变异称为 BLG A 和 BLG B。

应用

β-乳球蛋白用于通过等电聚焦电泳法鉴定牛奶中的κ-酪蛋白的遗传变异体。
β牛奶β-乳球蛋白已用于：
  • 作为校准剂校准TriWave设备。
  • 作为标准品，用于通过反相高效液相色谱(HPLC)检测和定量牛奶中的β-乳球蛋白
  • 蛋白酶样品的纯化和分子量测定

生化/生理作用

ββ-乳球蛋白(β-lg)具有热致凝胶化特性。它还具有抗病毒、抗癌和降胆固醇作用。ββ-乳球蛋白可结合视黄醇和长链脂肪酸，参与脂肪酸的吸收和代谢。

储存分类代码

11 - Combustible Solids

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)

法规信息

动植物源性产品

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
0000403266
0000377455
0000374056
0000326214
0000326244

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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. Do you have the amino acid sequence of Product L7880, β-Lactoglobulin A from bovine milk?

    Uniprot P02754 describes beta Lactoglobulin.The first 16 amino acids of that sequence are the signal peptide, so the sequence of beta-Lactoglobulin B corresponds to amino acids 17-178.But Product L7880 is beta-Lactoglobulin A. As shown in the details under the first link, this form of the protein varies by two amino acids from beta-Lactoglobulin B:1. Instead of the glycine (G) at position 80 of the B form, the A form has an aspartic acid (D).2. Instead of the alaline (A) at position 134 of the B form, the A form has a valine (V).So to answer your question, the sequence of Product L7880 is:LIVTQTMKGLDIQKVAGTWYSLAMAASDISLLDAQSAPLRVYVEELKPTPEGDLEILLQKWENDECAQKKIIAEKTKIPAVFKIDALNENKVLVLDTDYKKYLLFCMENSAEPEQSLVCQCLVRTPEVDDEALEKFDKALKALPMHIRLSFNPTQLEEQCHI

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

    Ask a Scientist here.

Bioactive milk proteins, peptides and lipids and other functional components derived from milk and bovine colostrum
Functional Foods, 471-511 (2011)
Laurette Tavel et al.
Journal of agricultural and food chemistry, 56(21), 10208-10217 (2008-10-22)
Interactions between beta-lactoglobulin (BLG) in its monomeric form and a wide range of aroma compounds were investigated by Fourier transform infrared (FT-IR) and 2D nuclear magnetic resonance (NMR) spectroscopies. A screening of the ligands was carried out by FT-IR through
K M Oliveira et al.
European journal of biochemistry, 268(2), 477-483 (2001-02-13)
The crystal structures of beta-lactoglobulin genetic variants A and B have been determined in the orthorhombic space group C222(1) (lattice Y) by X-ray diffraction at 2.0 A and 1.95 A resolution, respectively. The structural comparison shows that both variants exhibit
An Acid Protease Produced by Monilinia fructigena in vitro and in Infected Apple Fruits, and its Possible Role in Pathogenesis
Hislop EC, et al.
Microbiology, 128(4), 799-807 (1982)
DNA Binding and Phosphorylation Regulate the Core Structure of the NF-kappaB p50 Transcription Factor
Vonderach M, et al.
Journal of the American Society For Mass Spectrometry, 30(1), 128-138 (2019)
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