|Gene:||RhAAT1||Accession Number: G-10527 (MetaCyc)|
Species: Rosa hybrid cultivar
A cDNA clone was isolated from petals of 'fragrant cloud' Rosa. The cDNA was recombinantly expressed in Escherichia coli and the molecular weight of the protein was calculated to be 51.762 kDa [Shalit03]. The cDNA encoded a protein with high similarity to BAHD family of acetyltransferase. The recombinant protein was partially purified and shown to accept alcohols like geraniol and citronellol with acetyl Coenzyme A producing the respective esters geranyl acetate and citronellyl acetate, hence acting as geraniol acetyltransferase,. The AAT1 gene was expressed only in floral tissues during flower development.
Molecular Weight of Polypeptide: 51.762 kD (from nucleotide sequence), 53.0 kD (experimental) [Shalit03 ]
pI: 5.45 [Shalit03]
|Molecular Function:||GO:0016407 - acetyltransferase activity [Shalit03]|
Enzymatic reaction of: geraniol acetyltransferase
The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the Enzyme Commission system.
The reaction is favored in the direction shown.
In Pathways: geranyl acetate biosynthesis
pH(opt): 7-8 [Shalit03]
Shalit03: Shalit M, Guterman I, Volpin H, Bar E, Tamari T, Menda N, Adam Z, Zamir D, Vainstein A, Weiss D, Pichersky E, Lewinsohn E (2003). "Volatile ester formation in roses. Identification of an acetyl-coenzyme A. Geraniol/Citronellol acetyltransferase in developing rose petals." Plant Physiol 131(4);1868-76. PMID: 12692346
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