Abstract: The present invention provides a transformed strain, comprising: a host cell; a first nucleotide sequence, located inside the host cell, the first nucleotide sequence encoding a PETase, which is derived from Ideonella; and a second nucleotide sequence, located inside the host cell, the second nucleotide sequence comprising a first chaperon nucleotide sequence or a second chaperon nucleotide sequence; wherein the first chaperon nucleotide sequence encodes a molecular chaperon protein (GroELS), and the second chaperon nucleotide sequence encodes a lipase secretion chaperone protein (LsC). The present invention also provides a method for degrading plastic, using said transformed strain for degrading a plastic having PET.

Abstract: Provided is a recombinant microorganism including at least two genes for producing itaconic acid and its derived monomers, and the at least two genes are located on the same expression vector. The at least two genes include one encoding cis-aconitic acid decarboxylase and the other one encoding aconitase, and the genome of the recombinant microorganism includes a gene encoding the molecular chaperone protein GroELS. Also provided is a method for producing itaconic acid by using the microorganism.

Abstract: Provided is a recombinant microorganism including at least two genes for producing itaconic acid and its derived monomers, and the at least two genes are located on the same expression vector. The at least two genes include one encoding cis-aconitic acid decarboxylase and the other one encoding aconitase, and the genome of the recombinant microorganism includes a gene encoding the molecular chaperone protein GroELS. Also provided is a method for producing itaconic acid by using the microorganism.