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Bradford protein assay. The Bradford protein assay (also known as the Coomassie protein assay) was developed by Marion M. Bradford in 1976. [1] It is a quick and accurate [2] spectroscopic analytical procedure used to measure the concentration of protein in a solution. The reaction is dependent on the amino acid composition of the measured ...
Bovine serum albumin (BSA or "Fraction V") is a serum albumin protein derived from cows. It is often used as a protein concentration standard in lab experiments. The nickname "Fraction V" refers to albumin being the fifth fraction of the original Edwin Cohn purification methodology that made use of differential solubility characteristics of plasma proteins.
Albumin is a globular, water-soluble, un- glycosylated serum protein of approximate molecular weight of 65,000 daltons. Albumin (when ionized in water at pH 7.4, as found in the body) is negatively charged. The glomerular basement membrane is also negatively charged in the body; some studies suggest that this prevents the filtration of albumin ...
Fetal bovine serum is the most widely used serum-supplement for the in vitro cell culture of eukaryotic cells. This is due to it having a very low level of antibodies and containing more growth factors, allowing for versatility in many different cell culture applications. The globular protein, bovine serum albumin (BSA), is a major component of ...
Human serum albumin is the main protein of human blood plasma. It makes up around 50% of human plasma proteins. It binds water, cations (such as Ca 2+, Na + and K +), fatty acids, hormones, bilirubin, thyroxine (T4) and pharmaceuticals (including barbiturates). Its main function is to regulate the oncotic pressure of blood. [7]
The structure of α-lactalbumin is well known and is composed of 123 amino acids and 4 disulfide bridges. The molecular weight is 14178 Da, and the isoelectric point is between 4.2 and 4.5. α-Lactalbumin has two prominent forms: holo-state and apo-state. The holo-state is the natural form--folded and bound by calcium.
Blocking of non-specific binding is achieved by placing the membrane in a dilute solution of protein – typically 3–5% bovine serum albumin (BSA) or non-fat dry milk (both are inexpensive) in tris-buffered saline (TBS) or I-Block, with a minute percentage (0.1%) of detergent such as Tween 20 or Triton X-100.
11657 Ensembl ENSG00000163631 ENSMUSG00000029368 UniProt P02768 P07724 RefSeq (mRNA) NM_000477 NM_009654 RefSeq (protein) NP_000468 NP_033784 Location (UCSC) Chr 4: 73.4 – 73.42 Mb Chr 5: 90.61 – 90.62 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Human serum albumin is the serum albumin found in human blood. It is the most abundant protein in human blood plasma ; it ...