There is provided a microbial cell for producing at least one omega-functionalized carboxylic acid ester from at least one alkane, wherein the cell is genetically modified to increase the expression relative to the wild type cell of (i) Enzyme E.sub.1 capable of converting the alkane to the corresponding 1-alkanol; (ii) Enzyme E.sub.2 capable of converting the 1-alkanol of (i) to the corresponding 1-alkanal; (iii) Enzyme E.sub.3 capable of converting the 1-alkanal of (ii) to the corresponding alkanoic acid; (iv) Enzyme E.sub.4 capable of converting the alkanoic acid of (iii) to the corresponding alkanoic acid ester; and (iv) Enzyme E.sub.5 capable of converting the alkanoic acid ester of (iv) to the corresponding omega-hydroxy-alkanoic acid ester, and wherein the cell does not comprise a genetic modification that increases the expression relative to the wild type cell of at least one of the following enzymes E.sub.20-E.sub.24 selected from the group consisting of: E.sub.20 Acyl-ACP thioesterase, of EC 3.1.2.14 or EC 3.1.2.22, E.sub.21 Acyl-CoA thioesterase, of EC 3.1.2.2, EC 3.1.2.18, EC 3.1.2.19, EC 3.1.2.20 or EC 3.1.2.22, E.sub.22 Acyl-CoA:ACP transacylase, E.sub.23 Polyketide synthase, and E.sub.24 Hexanoic acid synthase

The present invention is related to a novel enzymatic process for production of retinoids via a multi-step process, which process includes the use of heterologous enzymes having activity in a carotene-producing host cell, particularly wherein such process results in high percentage of retinoids, in trans-isoform.

As a method for producing a 3-hydroxyisobutyric acid ester using a biocatalyst, a method for producing a 3-hydroxyisobutyric acid ester, including a step of allowing an alcohol or phenol to act on 3-hydroxyisobutyryl-CoA in the presence of alcohol acyltransferase to produce a 3-hydroxyisobutyric acid ester is provided.

Provided herein is a recombinant nucleic acid molecule, a recombinant microorganism, and a method for fermentative production of n-butylacrylate and other esters from alcohols and acyl-CoA units using alcohol acyl transferase enzymes.

Disclosed herein are methods for producing tulipalin A (-methylene--butyrolactone), recombinant cells or organisms for producing tulipalin A, enzymes needed for producing tulipalin A, and nucleic acids for expression of those enzymes.

The present invention provides polynucleotide sequences derived from Helichrysum umbraculigerum and encoding a protein or a plurality thereof belonging to the alcohol acyltransferase (AAT) family. Further provided are an artificial nucleic acid molecule including the polynucleotide disclosed herein, a transgenic cell, tissue, or plant including same.