FABP4/A-FABP recombinant protein

Recombinant Human FABP4/A-FABP Protein (N-His)

Cat. Num. AAA2557291

• Gene Names: FABP4; aP2; ALBP; AFABP; A-FABP; HEL-S-104
• Purity: >95% as determined by reducing SDS-PAGE.
• Synonyms: FABP4/A-FABP; Recombinant Human FABP4/A-FABP Protein (N-His); Fatty Acid-Binding Protein Adipocyte; Adipocyte Lipid-Binding Protein; ALBP; Adipocyte-Type Fatty Acid-Binding Protein; A-FABP; AFABP; Fatty Acid-Binding Protein 4; FABP4/A-FABP recombinant protein

• Host: E Coli
• Purity/Purification: >95% as determined by reducing SDS-PAGE.
• Form/Format: Lyophilized from a 0.2 mum filtered solution of 20mM PB, 150mM NaCl, pH7.4.
• Sequence: Cys2-Ala132
• Sequence Length: 132

• Species: Human
• Endotoxin: < 1.0 EU per mug as determined by the LAL method.
• Fusion Tag: N-His
• Preparation and Storage: Lyophilized protein should be stored at < -20 degree C, though stable at room temperature for 3 weeks. Reconstituted protein solution can be stored at 4-7 degree C for 2-7 days. Aliquots of reconstituted samples are stable at < -20 degree C for 3 months.

Related Product Information for FABP4/A-FABP recombinant protein

Protein Construction: Recombinant Human FABP4 is produced by our E Coli expression system and the target gene encoding Cys2-Ala132 is expressed with a 6His tag at the N-terminus.

Background: Fatty Acid-Binding Protein 4 (FABP4) is a cytoplasm protein that belongs to the fatty-acid binding protein (FABP) family of calycin superfamily. Fatty acid binding proteins are a family of small, highly conserved, cytoplasmic proteins that bind long-chain fatty acids. FABP4 is expressed in a differentiation-dependent fashion in adipocytes and is a critical gene in the regulation of the biological function of these cells. FABP4 is thought to participate in Lipid transport protein in adipocytes. FABP4 binds to the long chain fatty acids and retinoic acid, delivers long-chain fatty acids and retinoic acid to their cognate receptors in the nucleus. FABP4 modulates inflammatory responses and cholesterol ester accumulation. FABP4 is a plasma marker of metabolic disturbances in HIV-infected patients, and therefore, could serve to guide therapeutic intervention in this group of patients.

NCBI and Uniprot Product Information

• NCBI GI #: 119781
• NCBI GeneID: 2167
• UniProt Accession #: P15090
• Molecular Weight: Molecular Mass: 16.88kDa; Actual Protein Molecular Mass: 15kDa
• NCBI Official Full Name: Fatty acid-binding protein, adipocyte
• NCBI Official Synonym Full Names: fatty acid binding protein 4
• NCBI Official Symbol: FABP4
• NCBI Official Synonym Symbols: aP2; ALBP; AFABP; A-FABP; HEL-S-104
• NCBI Protein Information: fatty acid-binding protein, adipocyte
• UniProt Protein Name: Fatty acid-binding protein, adipocyte
• UniProt Gene Name: FABP4
• UniProt Synonym Gene Names: ALBP; A-FABP; AFABP
• UniProt Entry Name: FABP4_HUMAN

NCBI Description

FABP4 encodes the fatty acid binding protein found in adipocytes. Fatty acid binding proteins are a family of small, highly conserved, cytoplasmic proteins that bind long-chain fatty acids and other hydrophobic ligands. It is thought that FABPs roles include fatty acid uptake, transport, and metabolism. [provided by RefSeq, Jul 2008]

Uniprot Description

FABP4: a lipid transport protein that is the predominant fatty acid binding protein found in adipocytes. Also expressed in macrophages. Binds both long chain fatty acids and retinoic acid. Delivers long-chain fatty acids and retinoic acid to their cognate receptors in the nucleus. Homodimer. Forms a beta-barrel structure that accommodates hydrophobic ligands in its interior. Interacts with PPARG. Monomer. FABP4 knockout mice fed a high-fat and high-calorie diet become obese but develop neither insulin resistance nor diabetes, suggesting that this protein might be a link between obesity and insulin resistance and diabetes. Mice deficient in both FABP4 and ApoE show protection against atherosclerosis when compared with mice deficient only in ApoE. Mice carrying a FABP4 genetic variant exhibit both reduced FABP4 expression and a reduced potential for developing type 2 diabetes and coronary heart disease. A related study in humans indicated a similar pattern, suggesting that FABP4 may be a potential therapeutic target in the treatment of these disorders. Belongs to the calycin superfamily,fatty-acid binding protein (FABP) family.

Protein type: Lipid-binding

Chromosomal Location of Human Ortholog: 8q21

Cellular Component: cytoplasm; lipid particle; nucleus

Molecular Function: transporter activity; fatty acid binding

Biological Process: cholesterol homeostasis; transport; white fat cell differentiation; triacylglycerol catabolic process; brown fat cell differentiation; negative regulation of protein kinase activity; cytokine production; negative regulation of transcription, DNA-dependent; positive regulation of inflammatory response