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Key Documents

E0789

Sigma-Aldrich

Casein, Hammarsten bovine

Synonym(s):

Casein from bovine milk

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About This Item

CAS Number:
9000-71-9
EC Number:
232-555-1
MDL number:
MFCD00081481
UNSPSC Code:
12352202
NACRES:
NA.61

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)

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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.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Margaret H Hastings et al.
PloS one, 12(10), e0186646-e0186646 (2017-10-21)
Calpains are a family of intracellular proteases defined by a conserved protease domain. In the marine mollusk Aplysia californica, calpains are important for the induction of long-term synaptic plasticity and memory, at least in part by cleaving protein kinase Cs
Krisztina Nagy et al.
The Journal of biological chemistry, 285(50), 38811-38817 (2010-10-06)
The possible mechanism of casein aggregation and micelle buildup was studied in a new approach by letting α-casein adsorb from low concentration (0.1 mg·ml(-1)) solutions onto the charged surfaces of polyelectrolyte films. It was found that α-casein could adsorb onto
Andreas F Kolb et al.
PloS one, 6(7), e21775-e21775 (2011-07-27)
The major physiological function of milk is the transport of amino acids, carbohydrates, lipids and minerals to mammalian offspring. Caseins, the major milk proteins, are secreted in the form of a micelle consisting of protein and calcium-phosphate.We have analysed the

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