Anti-SPTLC2 Antibody

Serine palmitoyltransferase 2 (EC 2.3.1.50; UniProt O15270; also known as hLCB2a, LCB 2, LCB2a, Long chain base biosynthesis protein 2, Long chain base biosynthesis protein 2a, Serine-palmitoyl-CoA transferase 2, SPT 2) is encoded by the SPTLC2 (also known as HSAN1C, KIAA0526, NSAN1C, LCB2) gene (Gene ID 9517) in human. Serine palmitoyltransferase (SPT) is a pyridoxal 5′-phosphate (PLP)-dependent enzyme that catalyses the first step of de novo sphingolipids (SLs) biosynthesis, namely the condensation of L-serine with palmitoyl coenzyme-A to generate 3-ketodehydrosphinganine (KDS) that forms the sphingoid base backbone of all SLs. The core human SPT homoenzyme is a membrane-bound heterodimer composed of an hLCB1 (SPTLC1) subunit together with either an hLCB2a (SPTLC2) or an hLCB2b (SPTLC3) subunit. The hLCB1/hLCB2 heterodimer contains a single active site composed of residues from both subunits. hLCB2a and hLCB2b share 68% sequence identity, with hLCB2b being the isotype that is predominantly expressed in the placenta and prefers shorter chain acyl-CoAs (C12 and C14) to generate short-chain SLs. In addition, two human small subunits (ssSPTa and ssSPTb) have been identified and found to maximize the catalytic activity and to confer the acyl-CoA substrate chain-length specificity of the hLCB1/hLCB2 core enzyme. Mutations in hLCB1 and hLCB2a are found in patients with hereditary sensory and autonomic neuropathy type I (HSAN1), an inherited disorder that affects sensory and autonomic neurons due to neurotoxic deoxysphingolipids formation as a result of substrate promiscuity of the mutated SPT enzyme.

Target-specificity of this antiserum was verified by negative blotting using pre-immune serum and by target band blocking using immunogen peptides (Hornemann, T., et al. (2006). J. Biol. Chem. 281(49):37275-37281).

A mixture of two linear peptides corresponding to sequences from the N-terminal region and the C-terminal end of human SPTLC2.

Epitope: N-terminal region and C-terminal end.

Anti-SPTLC2 Antibody is an antibody against SPTLC2 for use in Western Blotting.

Research Category
Signaling

Research Sub Category
Lipid Signaling

Western Blotting Analysis: Representative lots detected SPTLC2 in human placenta tissue homogenates and in various lysates from human cell lines, including embryonic kidney HEK293, hepatocellular carcinoma HepG2, choriocarcinoma JAr and JEG-3 (Hornemann, T., et al. (2007). Biochem. J. 405(1):157-164; Hornemann, T., et al. (2006). J. Biol. Chem. 281(49):37275-37281).

Evaluated by Western Blotting in HepG2 cell lysate.

Western Blotting Analysis: A 1:500 dilution of this antibody detected SPTLC2 in 10 µg of HepG2 cell lysate.

~63 kDa observed. 62.92 kDa calculated. Target band size is also reported with a smaller apparent molecular weight of ~58kDa Uncharacterized band(s) may appear in some lysates.

Unpurified

Rabbit polyclonal antibody serum with 0.05% sodium azide.

Stable for 1 year at -20°C from date of receipt.
Handling Recommendations: Upon receipt and prior to removing the cap, centrifuge the vial and gently mix the solution. Aliquot into microcentrifuge tubes and store at -20°C. Avoid repeated freeze/thaw cycles, which may damage IgG and affect product performance.

Concentration: Please refer to lot specific datasheet.

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