NCBI Accession #
NP_001031651.1
NCBI GenBank Nucleotide #
NM_001036574.1
NCBI Official Full Name
terpene synthase 03
NCBI Official Symbol
TPS03
NCBI Official Synonym Symbols
ATTPS03; DL4395W; FCAALL.18; terpene synthase 03
NCBI Protein Information
terpene synthase 03
NCBI Summary
Encodes an (E,E)-alpha-farnesene synthase in the Col ecotype of Arabidopsis. This enzyme can also catalyze the formation of (E)-beta-ocimene as well as trace amounts of myrcene and other related compounds in vitro. The cytosolic localization of the protein may make it favor (E,E)-alpha-farnesene biosynthesis because the precursor of this product, FPP, is primarily cytosolic. Transcript levels for this gene increase in response to treatment with the jasmonic acid mimic coronalon or in response to the insect Plutella xylostella. TPS03 transcripts can also be detected in flowers. A similar protein from the C24 ecotype with one amino acid change (S267F) has a different substrate specificity.
UniProt Synonym Gene Names
AtTPS03
UniProt Protein Name
Tricyclene synthase, chloroplastic
UniProt Synonym Protein Names
(E)-beta-ocimene synthase (EC:4.2.3.106); (E,E)-alpha-farnesene synthase (EC:4.2.3.46); Terpenoid synthase 3; AtTPS03
UniProt Primary Accession #
A4FVP2
UniProt Secondary Accession #
O23517; Q84NE5; Q8GWA8; Q8LE37; Q9FVI5
UniProt Related Accession #
A4FVP2
UniProt Comments
Predominantly involved in sesquiterpenes (C15) biosynthesis. Using FPP as substrate, the major product is (E,E)-alpha-farnesene with minor amounts of (Z,E)-alpha-farnesene and (E,E)-beta-farnesene. Using GPP as substrate, could also be able in vitro to synthesize monoterpene (C10) with (E)-beta-ocimene as the major product and with (Z)-beta-ocimene and myrcene as minor products.