LEPTIN active protein

RECOMBINANT HUMAN LEPTIN

Cat. Num. AAA232445

• Gene Names: LEP; OB; OBS; LEPD
• Applications: ELISA, Functional Assay, Western Blot
• Purity: >98% by SDS PAGE and HPLC analysis.
• Synonyms: LEPTIN; RECOMBINANT HUMAN LEPTIN; LEPTIN active protein

• Purity/Purification: >98% by SDS PAGE and HPLC analysis.
• Form/Format: Purified recombinant protein - lyophilised
• Concentration: Approximate Protein Concentration: 1.0 mg/ml after reconstitution (varies by lot)
• Sequence Length: 167

• Applicable Applications for LEPTIN active protein: ELISA (EIA), Functional Assays (FN), Western Blot (WB)
• Application Notes: ELISA: Recombinant human leptin may be use as a standard for ELISA applications with either a purified human leptin antibody or a biotinylated human leptin antibody.; Western Blot: Recombinant human leptin may be used as the positive control for Western Blotting applications with either a purified human leptin antibody or a biotinylated human leptin antibody.; ELISA: Minimum Dilution: 0.2; Maximum Dilution: 0.4ng/well; Western Blotting: Minimum Dilution: 1.5; Maximum Dilution: 3.0ng/lane
• Reconstitution: Reconstitute with 1.0 ml distilled water. Care should be taken during reconstitution as the protein may appear as a film at the bottom of the vial. MyBioSource recommends that the vial is gently mixed after reconstitution. For extended storage, the addition of 0.1% bovine serum abumin (BSA) is recommended.; Preparation
• Buffer Solution: Lyophilized with 0.1% TFA
• Activity: This item is biologically active in the ob/ob mouse obesity model. The ob/ob mice were treated via intraperitoneal injection once daily at a dose of 5 ug Leptin/gm of body weight for 7 days. Significant effects on body weight, food consumption, and plasma glucose levels were observed to saline-treated controls.
• Target Species: Human
• Preparation and Storage: Prior to reconstitution store at 4 degree C. After reconstitution store at -20 degree C. Storage in frost-free freezers is not recommended. This product should be stored undiluted. Avoid repeated freezing and thawing as this may denature the antibody. Should this product contain a precipitate we recommend microcentrifugation before use.; Shelf Life: 3 months from date of reconstitution.

Related Product Information for LEPTIN active protein

Leptin is a major adipose-derived hormone and member of the leptin family, which plays a key role in appetite control and the regulation of energy expenditure. Secreted leptin associates with proteins within the bloodstream and is transported to the brain, where it inhibits or up-regulates the activity of neuropeptides such as neuropeptide Y (NPY) and alpha-melanocyte-stimulating hormone respectively. Leptin is a recognised marker of obesity, with a correlation between circulating levels of leptin and body fat mass, and defects in leptin production result in severe obesity. Regulators of leptin expression include insulin, cortisol, cAMP and thiazolidinediones.

NCBI and Uniprot Product Information

• NCBI GI #: 4557715
• NCBI GeneID: 3952
• NCBI Accession #: NP_000221.1
• NCBI GenBank Nucleotide #: NM_000230.2
• UniProt Accession #: P41159; O15158; Q56A88
• Molecular Weight: 16.0kD (147 amino acid residues).
• NCBI Official Full Name: leptin
• NCBI Official Synonym Full Names: leptin
• NCBI Official Symbol: LEP
• NCBI Official Synonym Symbols: OB; OBS; LEPD
• NCBI Protein Information: leptin; leptin (murine obesity homolog); leptin (obesity homolog, mouse); obese protein; obese, mouse, homolog of; obesity factor
• UniProt Protein Name: Leptin
• Protein Family: Leptin
• UniProt Gene Name: LEP
• UniProt Synonym Gene Names: OB; OBS
• UniProt Entry Name: LEP_HUMAN

NCBI Description

This gene encodes a protein that is secreted by white adipocytes, and which plays a major role in the regulation of body weight. This protein, which acts through the leptin receptor, functions as part of a signaling pathway that can inhibit food intake and/or regulate energy expenditure to maintain constancy of the adipose mass. This protein also has several endocrine functions, and is involved in the regulation of immune and inflammatory responses, hematopoiesis, angiogenesis and wound healing. Mutations in this gene and/or its regulatory regions cause severe obesity, and morbid obesity with hypogonadism. This gene has also been linked to type 2 diabetes mellitus development. [provided by RefSeq, Jul 2008]

Uniprot Description

leptin: May function as part of a signaling pathway that acts to regulate the size of the body fat depot. An increase in the level of LEP may act directly or indirectly on the CNS to inhibit food intake and/or regulate energy expenditure as part of a homeostatic mechanism to maintain constancy of the adipose mass. Defects in LEP may be a cause of obesity (OBESITY). It is a condition characterized by an increase of body weight beyond the limitation of skeletal and physical requirements, as the result of excessive accumulation of body fat. Belongs to the leptin family.

Protein type: Secreted; Secreted, signal peptide; Cell development/differentiation; Hormone

Chromosomal Location of Human Ortholog: 7q31.3

Cellular Component: extracellular space; cytoplasm; extracellular region

Molecular Function: growth factor activity; peptide hormone receptor binding; hormone activity

Biological Process: circadian rhythm; response to dietary excess; positive regulation of myeloid cell differentiation; regulation of fat cell differentiation; regulation of steroid biosynthetic process; female pregnancy; negative regulation of transcription from RNA polymerase II promoter; glucose homeostasis; positive regulation of luteinizing hormone secretion; negative regulation of appetite; positive regulation of tyrosine phosphorylation of Stat3 protein; response to insulin stimulus; response to vitamin E; regulation of cholesterol absorption; positive regulation of MAPKKK cascade; regulation of blood pressure; positive regulation of cell proliferation; positive regulation of ion transport; placenta development; central nervous system neuron development; positive regulation of cytokine production; cholesterol metabolic process; positive regulation of developmental growth; bile acid metabolic process; eating behavior; glucose metabolic process; adult feeding behavior; ovulation from ovarian follicle; leptin-mediated signaling pathway; negative regulation of vasoconstriction; tyrosine phosphorylation of STAT protein; fatty acid beta-oxidation; glycerol biosynthetic process; insulin secretion; response to hypoxia; energy reserve metabolic process; hormone metabolic process; regulation of gluconeogenesis; positive regulation of follicle-stimulating hormone secretion; positive regulation of insulin receptor signaling pathway; leukocyte tethering or rolling; regulation of insulin secretion; negative regulation of apoptosis

Disease: Leptin Deficiency