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Key Documents

L7252

Sigma-Aldrich

Lactalbumin

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About This Item

CAS Number:
EC Number:
MDL number:
UNSPSC Code:
12352202
NACRES:
NA.61

biological source

bovine

Quality Level

form

powder

technique(s)

cell culture | insect: suitable

UniProt accession no.

storage temp.

2-8°C

Gene Information

bovine ... LALBA(281894)

General description

α-Lactalbumin is a small, globular, whey protein that has been found in all milk studied to date. It is a metalloprotein of approximately 14 kDa produced in the mammary glands.

Application

α-Lactalbumin was used in a cytologic assay for diagnosis of food hypersensitivity in patients with irritable bowel syndrome.
Lactalbumin has also been used in rearing anopheline mosquitoes.

Biochem/physiol Actions

α-Lactalbumin consists of a single polypeptide chain with 8 cysteines which form disulfide bridges. α-Lactalbumin binds several metal ions, including calcium, which is thought to play a role in the regeneration of native α-lactalbumin from the reduced, denatured form. α-Lactalbumin also has a distinct zinc binding site that is thought to play a role in the binding of the lactose synthase complex. The mature protein consists of 123 amino acid residues (14 kDa), and it has a three-dimensional structure with 1.7 Angstrom resolution, demonstrating four a-helices and a triple stranded antiparallel β-sheet.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


Certificates of Analysis (COA)

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Takashi Nakamura et al.
The Journal of biological chemistry, 288(20), 14408-14416 (2013-04-13)
Although HAMLET (human α-lactalbumin made lethal to tumor cells), a complex formed by human α-lactalbumin and oleic acid, has a unique apoptotic activity for the selective killing of tumor cells, the molecular mechanisms of expression of the HAMLET activity are
Jinbing Xie et al.
Advanced healthcare materials, 2(6), 795-799 (2013-01-09)
Upon controlled UV illumination, disulfide bonds in bovine α-lactalbumin (BLA) are selectively broken, leading to self-assembly of the BLA and doxorubicin (DOX) molecules into nanoparticles via hydrophobic interactions and intermolecular disulfide bonds. Such protein-drug nanoparticles have synergistic anticancer activity in
Yoshiko Moriyama et al.
Langmuir : the ACS journal of surfaces and colloids, 28(47), 16268-16273 (2012-11-01)
The thermal stability of two homologous proteins, lysozyme and α-lactalbumin, was examined by circular dichroism. The present study clearly showed two different aspects between the homologous proteins: (1) the original helices of lysozyme and α-lactalbumin were unchanged at heat treatments
A Coscia et al.
Journal of biological regulators and homeostatic agents, 26(3 Suppl), 39-42 (2013-03-01)
Cow's milk proteins (CMPs) are among the best characterized food allergens. Cow's milk contains more than twenty five different proteins, but only whey proteins alpha-lactalbumin, beta-lactoglobulin, bovine serum albumin (BSA), and lactoferrin, as well as the four caseins, have been
Petter Storm et al.
PloS one, 8(3), e58578-e58578 (2013-03-19)
Ion channels and ion fluxes control many aspects of tissue homeostasis. During oncogenic transformation, critical ion channel functions may be perturbed but conserved tumor specific ion fluxes remain to be defined. Here we used the tumoricidal protein-lipid complex HAMLET as

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