serine palmitoyltransferase, long chain base subunit 3

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NCBI Description of SPTLC3

The SPTLC3 gene encodes an isoform of the third subunit of serine palmitoyltransferase (SPT; EC, which catalyzes the rate-limiting step of the de novo synthesis of sphingolipids (Hornemann et al., 2006 [PubMed 17023427]). SPT contains 2 main subunits: the common SPTLC1 subunit (MIM 605712) and either SPTLC2 (MIM 605713) or its isoform SPTLC2L (SPTLC3), depending on the tissue in which biosynthesis occurs (Hornemann et al., 2006 [PubMed 17023427]). There are also 2 highly related isoforms of a third subunit, SSSPTA (MIM 613540) and SSSPTB (MIM 610412), that confer acyl-CoA preference of the SPT enzyme and are essential for maximal enzyme activity (Han et al., 2009 [PubMed 19416851]).[supplied by OMIM, Nov 2010].

Community Annotation of SPTLC3 Add / Edit SPTLC3: Annotations

No community annotations yet for SPTLC3.
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Figure notes

• "Mouse over" a mutation to see details.
• Missense green saturation indicates evolutionary conservation of the mutated positions.
• Red hashes in protein strip are splice sites.
• Blue-white-red bars are log2 copy ratio distributions (–1 to +1) from Zack et al. (2013).


SPTLC3 is highly significantly mutated in
SPTLC3 is significantly mutated in
SPTLC3 is near significance in

Click on a tumor type to see its full list of significant genes.

Data details

Mutation list for SPTLC3