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U7757 Sigma-Aldrich

Anti-UCP-3 antibody produced in rabbit

affinity isolated antibody, buffered aqueous solution



Related Categories Alphabetical Index, Antibodies, Antibodies for Cell Biology, Antibodies for Obesity Research, Antibodies to Cell and Organelle Proteins,
conjugate   unconjugated
clone   polyclonal
biological source   rabbit
application(s)   immunohistochemistry (formalin-fixed, paraffin-embedded sections): 1:3,000 using protease-digested sections of human and mouse skeletal muscle.
  western blot: 1:1,000 using extract of E. coli expressing UCP3
species reactivity   human, mouse, rat
mol wt   antigen ~34 kDa
form   buffered aqueous solution
shipped in   dry ice
storage temp.   −20°C
antibody form   affinity isolated antibody
Quality Level   200
antibody product type   primary antibodies
UniProt accession no.   P55916
Gene Information   human ... UCP3(7352)
mouse ... Ucp3(22229)
rat ... Ucp3(25708)


General description

Anti-Uncoupling Protein 3 (UCP3) is developed in rabbit using a synthetic peptide corresponding to amino acid residues 254-267 of human UCP3, with N-terminal lysine added, conjugated to keyhole limpet hemocyanin (KLH). The uncoupling proteins (UCPs) are mitochondrial inner membrane proteins which comprises UCP1, 2, 3, 4 and 5. UCP3 displays two forms, a long mature, UCP3L and a short, UCP3S form. UCP3 is preferentially expressed in skeletal muscle and in brown adipose tissue (BAT).

UCP3 is a skeletal muscle protein that functions to uncouple mitochondrial respiration from ATP production. UCP3 regulates fatty acid and energy metabolism. This protein inhibits lipid-induced oxidative stress in the mitochondrial components of heart and skeletal muscle cells. UCP3 may also be involved in the pathogenesis of type 2 diabetes . Anti-UCP-3 antibody is specific for UCP3 in humans, rats and mice and does not react with UCP1 and UCP2. Staining of the UCP3 band by immunoblotting is specifically inhibited with the immunizing peptide.


The corresponding sequence in rat and mouse UCP3 differ by 4 and 3 amino acids, respectively.

synthetic peptide corresponding to human UCP-3 sequence (amino acids 254-267) with N-terminal lysine added, conjugated to KLH.


Anti-UCP-3 antibody is suitable for use in immunohistochemistry (formalin-fixed, paraffin-embedded sections at 1:3,000 dilution, using protease-digested sections of human and mouse skeletal muscle). The antibody may also be used in immunoblot (approx. 34 kDa, additional weak bands may be detected in some preparations of brown adipose tissue extracts) and western blot (at 1:1,000 dilution, extract of E. coli expressing UCP3).

Anti-UCP-3 antibody produced in rabbit has been used in immunohistochemistry and western blotting.

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 1% BSA and 15 mM sodium azide


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Biochem/physiol Actions

The uncoupling proteins (UCPs) are considered as transporters functioning as enzymatic uncouplers of oxidative phosphorylation. They are capable of returning protons pumped by the respiratory chain to the mitochondrial matrix. UCP3 is an active proton transporter, regulated by CoQ (ubiquinone), fatty acids or nucleotides.

Safety & Documentation

Safety Information

WGK Germany 
Protocols & Articles


Antibody Basics

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