L4385
α-Lactalbumin from bovine milk
Marker for non-denaturing PAGE
Sign Into View Organizational & Contract Pricing
All Photos(1)
About This Item
Recommended Products
biological source
bovine milk
Quality Level
form
lyophilized powder
mol wt
~14.2 kDa
technique(s)
microbiological culture: suitable
UniProt accession no.
storage temp.
−20°C
Gene Information
cow ... LALBA(281894)
Looking for similar products? Visit Product Comparison Guide
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 the isolation and analysis of restriction endonuclease digestive patterns of chromosomal DNA from Mycobacterium paratuberculosis and other Mycobacterium species. It was also used in a study to test if the neuroendocrine protein 7B2 suppresses the aggregation of neurodegenerative disease-related proteins.
Biochem/physiol Actions
α-Lactalbumin is the cheif protein in human milk. It 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 kD), and it has a three-dimensional structure with 1.7 Α° resolution, demonstrating four α-helices and a triple stranded antiparallel β-sheet.
Alters the substrate specificity of galactosyltransferase to increase the rate of lactose formation; the complex of galactosyltransferase and α-lactalbumin is called lactose synthase. Site-directed mutagenesis of Asp87 or Asp88 to Ala completely abolishes the strong calcium binding affinity and reduces the stimulation of lactose synthase to <3.5% of the maximal rate.
Reconstitution
0.9-1.4 mg/mL after reconstitution with 1 mL of water
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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’.
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Customers Also Viewed
Michael Helwig et al.
The Journal of biological chemistry, 288(2), 1114-1124 (2012-11-23)
Neurodegenerative diseases such as Alzheimer (AD) and Parkinson (PD) are characterized by abnormal aggregation of misfolded β-sheet-rich proteins, including amyloid-β (Aβ)-derived peptides and tau in AD and α-synuclein in PD. Correct folding and assembly of these proteins are controlled by
Comparison of the amino acid sequence of bovine alpha-lactalbumin and hens egg white lysozyme.
K Brew et al.
The Journal of biological chemistry, 242(16), 3747-3749 (1967-08-25)
Why people become psychiatric nurses.
P Jackson
Nursing, 4(10), 32-34 (1990-05-10)
J Ren et al.
The Journal of biological chemistry, 268(26), 19292-19298 (1993-09-15)
It has been proposed that the binding of Zn2+ to alpha-lactalbumin switches the conformation to one akin to a state intermediate in the folding of the protein. However, the high resolution x-ray crystal structure of human alpha-lactalbumin-Zn2+ complex at 1.7-A
D B Veprintsev et al.
FEBS letters, 412(3), 625-628 (1997-08-04)
The thermal denaturation of bovine and human apo-alpha-lactalbumins at neutral pH has been studied by intrinsic protein fluorescence, circular dichroism (CD), and differential scanning microcalorimetry (DSC) methods. Apo-alpha-lactalbumin possesses a thermal transition with a midpoint about 25-30 degrees C under
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
Contact Technical Service