NCBI Accession #
NP_195190.1
NCBI GenBank Nucleotide #
NM_119630.3
NCBI Official Full Name
Squalene synthase
NCBI Official Symbol
SQS1
NCBI Official Synonym Symbols
ERG9; SQS1; SQUALENE SYNTHASE; squalene synthase 1; T4L20.220; T4L20_220
NCBI Protein Information
Squalene synthase
NCBI Summary
Encodes squalene synthase, which converts two molecules of farnesyl diphosphate (FPP) into squalene via an intermediate: presqualene diphosphate (PSPP). It is generally thought to be one of the key enzymes of sterol biosynthesis, since it catalyzes the first pathway-specific reaction of the sterol branch of the isoprenoid pathway.
UniProt Synonym Gene Names
SQS; SS
UniProt Protein Name
Squalene synthase
UniProt Synonym Protein Names
FPP:FPP farnesyltransferase; Farnesyl-diphosphate farnesyltransferase
UniProt Entry Name
FDFT_ARATH
UniProt Primary Accession #
P53799
UniProt Related Accession #
P53799
UniProt Comments
Catalytic activity: 2 farnesyl diphosphate + NAD(P)H = squalene + 2 diphosphate + NAD(P)+.Cofactor: Magnesium.Pathway: Terpene metabolism; lanosterol biosynthesis; lanosterol from farnesyl diphosphate: step 1/3.Subcellular location: Endoplasmic reticulum membrane; Multi-pass membrane protein By similarity. Tissue specificity: Expressed in all tissues analyzed (inflorescences, leaves, stems and roots). Highly expressed in roots.Sequence similarities: Belongs to the phytoene/squalene synthase family.