Recombinant Human Serine palmitoyltransferase 1 (SPTLC1), Truncated

Uniprot Id

O15269

Target Species

Human

Target Name

SPTLC1

Target Full Name

Serine palmitoyltransferase 1

Target Function

Serine palmitoyltransferase (SPT). The heterodimer formed with SPTLC2 or SPTLC3 constitutes the catalytic core. The composition of the serine palmitoyltransferase (SPT) complex determines the substrate preference. The SPTLC1-SPTLC2-SPTSSA complex shows a strong preference for C16-CoA substrate, while the SPTLC1-SPTLC3-SPTSSA isozyme uses both C14-CoA and C16-CoA as substrates, with a slight preference for C14-CoA. The SPTLC1-SPTLC2-SPTSSB complex shows a strong preference for C18-CoA substrate, while the SPTLC1-SPTLC3-SPTSSB isozyme displays an ability to use a broader range of acyl-CoAs, without apparent preference. Required for adipocyte cell viability and metabolic homeostasis.

Target Involvement

Neuropathy, hereditary sensory and autonomic, 1A (HSAN1A)

Target Subcellular Location

Endoplasmic reticulum membrane; Single-pass membrane protein.

Target Protein Families

Class-II pyridoxal-phosphate-dependent aminotransferase family

Target Tissue Specificity

Widely expressed. Not detected in small intestine.

Target Synonyms

SPTLC1; LCB1; Serine palmitoyltransferase 1; Long chain base biosynthesis protein 1; LCB 1; Serine-palmitoyl-CoA transferase 1; SPT 1; SPT1

Target Background

This gene encodes a member of the class-II pyridoxal-phosphate-dependent aminotransferase family. The encoded protein is the long chain base subunit 1 of serine palmitoyltransferase. Serine palmitoyltransferase converts L-serine and palmitoyl-CoA to 3-oxosphinganine with pyridoxal 5'-phosphate and is the key enzyme in sphingolipid biosynthesis. Mutations in this gene were identified in patients with hereditary sensory neuropathy type 1. Alternatively spliced variants encoding different isoforms have been identified. Pseudogenes of this gene have been defined on chromosomes 1, 6, 10, and 13.