Fatty acids are important for general cellular metabolism. A number of proteins have been implicated in the transport and storage of fatty acid. FABPs (fatty acid binding proteins) are a group of cytoplasmic, small mol wt (14-15kD) and proteins that has widespread tissue distribution. FABPs are quite abundant (3- 5% of total cellular protein). At least 7 FABPs, FABP1-7, have been cloned and characterized from various tissues. FABPs can bind long-chain fatty acid, fatty-acid acyl-CoA and acyl-L-carnitine. Several different isoform of FABP have been identified and generally referred to by tissue type (liver, heart, intestine, adipocyte, kidney, brain etc; protein designated as H-FABP indicates that it is heart type). However, expression of these isoform is not exclusive and more than one isoform can be found in a given cell or tissue. Three main types of FABPs that were initially discovered in the heart (FABP-H), liver (FABP-L), and intestine (FABP-I) are not exclusive these tissues and show considerable differences at the amino acid level (~30% identity). Other FABPs recently detected in adipocyte, kidney, and brain show a high degree of sequence homology among each other and with other FABPs. FABPs are also known as mammary derived growth inhibitor (MDGI), adipocyte lipid binding protein (ALBP), Myelin protein P2 homolog, P2 adipocyte protein, 422 protein (P15).Human FABP-H or adipocyte is 132aa protein (chromosome 2p11) Rat and mouse adipocyte-FABPs are 133aa single polypeptide chains.
Intestinal FABP (FABP2) gene has a polymorphism at codon 54 that identified an alanine-encoding allele and a threonine-encoding allele. Thr-54 protein is associated with increased fat oxidation and insulin resistance. High serum levels of FABP2 is ulcerative colitis indicates ileitis. FABP2 is has part in triglyceride-rich lipoprotein synthesis. FABP2 binds saturated long-chain fatty acids with a high affinity, but binds with a lower affinity to unsaturated long- chain fatty acids. FABP2 helps maintain energy homeostasis by functioning as a lipid sensor.
Source:Recombinant protein corresponding to 132aa from human FABP2, fused to His-tag at N-terminal, expressed in E. coli.
Applications:Suitable for use in ELISA and Western Blot. Other applications not tested.
Recommended Dilution:ELISA: 1-10ug/ml, as standards or for coatingWestern Blot: load 100-250ng/protein well and detect with specific antibodiesOptimal dilutions to be determined by the researcher.
Storage and Stability:May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
仕様
Size：25ug
Source Antigen：Recombinant, E. coli
Grade：Highly Purified
Purity：Highly Purified (~95%)
Form：Supplied as a liquid in 20mM Tris, pH 8.0, 10% glycerol.
