The present application relates to a modified isoprene synthase that has an isoprene synthetic activity and has at least one mutation of an amino acid residue in the amino acid sequence of SEQ ID NO: 4, an amino acid sequence having one or several amino acid substitutions, deletions, insertions or additions in the amino acid sequence of SEQ ID NO: 4, or an amino acid sequence having 90% or more identity to the amino acid sequence of SEQ ID NO: 4. The modified isoprene synthase is useful for preparing isoprene monomers in improved yields.

Provided is a nucleic acid encoding a fusion protein, the fusion protein including a first protein selected from the group consisting of isoprene synthase and cyclic terpene synthase, and a FKBP family protein linked to the first protein. Provided is a fusion protein encoded by the nucleic acid. Provided is a recombinant cell including the nucleic acid and expressing the fusion protein. Further provided is a recombinant cell including a first nucleic acid encoding the first protein and a second nucleic acid encoding the FKBP family protein, and expressing the first protein and the FKBP family protein. As a host cell, a syngas-assimilating bacterium or a methanol assimilating bacterium can be used.

Disclosed are methods for producing butadiene from one or more of several diverse feedstocks including bioderived feedstocks, renewable feedstocks, petrochemical feedstocks and natural gas.

The present invention relates to a method for generating 1,3-diene compounds through a biological process. More specifically, the invention relates to a method for producing 1,3-diene compounds (for example butadiene or isoprene) from molecules of the 3-hydroxyalk-4-enoate type or from 3-phosphonoxyalk-4-enoates.

Provided are a novel isoprene synthase derived from sweet potato and a method of preparing isoprene using the same, and more specifically, a novel isoprene synthase derived from sweet potato, a gene encoding the isoprene synthase, a host cell transformed with the gene, and a method of preparing isoprene using the same. The isoprene synthase of the present invention may have higher isoprene productivity as compared to isoprene synthases known in the related art to thereby be effectively used in isoprene biosynthesis and preparation of an isoprene polymer using the same.

The present invention relates to a recombinant methanotroph having an ability to produce isoprene and a method for producing isoprene using the same, and more particularly to a recombinant methanotroph having an ability to produce isoprene wherein a gene encoding an isoprene synthase having a homology of at least 70% to the amino acid sequence of Ipomoea batatas isoprene synthase is introduced into the recombinant methanotroph, and a method for producing isoprene using the recombinant methanotroph. The use of a recombinant methanotroph according to the present invention enables isoprene to be produced in high yield by using methane gas or methanol which is obtained from waste such as natural gas, biomass, municipal waste or the like as a carbon source.

The invention provides for methods for the production of mevalonate, isoprene, isoprenoid precursor molecules, and/or isoprenoids in cells via the heterologous expression of phosphoketolase enzymes.

An object of the present invention is to provide a series of techniques for producing isoprene from methanol or the like. Provided is a recombinant cell prepared by introducing a gene encoding isoprene synthase, into a host cell which is a methylotroph, wherein the gene is expressed in the host cell, and the recombinant cell is capable of producing isoprene from at least one C1 compound selected from the group consisting of methane, methanol, methylamine, formic acid, formaldehyde, and formamide. Preferably, it has at least one C1 carbon assimilating pathway selected from the group consisting of a serine pathway, a ribulose monophosphate pathway, and a xylulose monophosphate pathway as a fixing pathway of formaldehyde. Also provided is a method for producing isoprene using the recombinant cell.

Plasmid vectors and use of plasmid vectors in methods for producing methane and isoprene using Archaea are disclosed. Particularly, plasmid vectors that express isoprene synthase (ispS) are prepared and inserted into methanogens, such as Methanosarcina acetivorans, to allow for co-production of methane and isoprene. In one embodiment, the methods of the present disclosure can be used for wastewater management.

Disclosed are methods for producing butadiene from one or more of several diverse feedstocks including bioderived feedstocks, renewable feedstocks, petrochemical feedstocks and natural gas.