E0789

Casein, Hammarsten bovine

• Synonym(s): Casein from bovine milk
• CAS Number: 9000-71-9
• EC Number: 232-555-1
• MDL number: MFCD00081481
• UNSPSC Code: 12352202
• NACRES: NA.61

Properties

• biological source: bovine milk (Hammarsten)
• Quality Level: 300
• assay: >90% dry basis
• form: powder
• technique(s): enzyme immunoassay: suitable
• mp: 280 °C (dec.) (lit.)
• UniProt accession no.: P02662; P02663; P02666; P02668
• storage temp.: room temp
• InChI: 1S/C81H125N22O39P/c1-36(2)31-50(76(132)94-43(15-24-57(87)108)71(127)101-52(34-64(120)121)78(134)98-49(81(137)138)11-7-8-30-82)99-72(128)47(19-28-61(114)115)95-77(133)51(33-63(118)119)100-73(129)48(20-29-62(116)117)97-80(136)65(37(3)104)103-75(131)44(16-25-58(88)109)92-68(124)42(14-23-56(86)107)90-67(123)41(13-22-55(85)106)91-69(125)45(17-26-59(110)111)93-70(126)46(18-27-60(112)113)96-79(135)53(35-142-143(139,140)141)102-74(130)40(12-21-54(84)105)89-66(122)39(83)32-38-9-5-4-6-10-38/h4-6,9-10,36-37,39-53,65,104H,7-8,11-35,82-83H2,1-3H3,(H2,84,105)(H2,85,106)(H2,86,107)(H2,87,108)(H2,88,109)(H,89,122)(H,90,123)(H,91,125)(H,92,124)(H,93,126)(H,94,132)(H,95,133)(H,96,135)(H,97,136)(H,98,134)(H,99,128)(H,100,129)(H,101,127)(H,102,130)(H,103,131)(H,110,111)(H,112,113)(H,114,115)(H,116,117)(H,118,119)(H,120,121)(H,137,138)(H2,139,140,141)
• InChI key: BECPQYXYKAMYBN-UHFFFAOYSA-N
• Gene Information: bovine ... CSN1S1(282208) , CSN1S2(282209) , CSN2(281099) , CSN3(281728)

Description

General description

Casein is an amphiphilic protein.

Casein, a phosphoprotein, is the principal protein component of milk which is almost entirely expressed in the lactating mammary gland. In bovine milk they are classified according to their calcium sensitivity: αs1-, αs2-, and β-caseins precipitate in the presence of calcium; whereas κ-casein remains in solution.

Application

Casein, Hammarsten bovine has been used as a substrate for Aplysia californica calpain to study its activity.

The product is useful as a protease substrate.

Biochem/physiol Actions

Casein is useful in food industries and non-food applications. It has the property for emulsification, foam formation, and stabilization, water-binding, and gelation. Casein is also considered heat and acid-stable.

Partial gastrointestinal digestion of casein is a rich source of bioactive peptides, such as β-casomorphin. However, bovine casein is not homogeneous; variants A1 and B do lead to production of β-casomorphin 7 production, while A2 does not.

Safety Information

• wgk_germany: WGK 3