摘要:
The present invention provides a three-dimensional structures of P. tremuloides isoprene synthase and P. alba isoprene synthase. The invention also provides methods of using the three-dimensional structure to design isoprene synthases with improved activity for increased isoprene production in microbial host cells. Biosynthetically produced isoprene of the present invention finds use in the manufacture of rubber and elastomers.
摘要:
The present invention provides a three-dimensional structures of P. tremuloides isoprene synthase and P. alba isoprene synthase. The invention also provides methods of using the three-dimensional structure to design isoprene synthases with improved activity for increased isoprene production in microbial host cells. Biosynthetically produced isoprene of the present invention finds use in the manufacture of rubber and elastomers.
摘要:
The invention features methods for producing isoprene from cultured cells having increased expression levels and/or activity levels of a mevalonate kinase polypeptide and an isoprene synthase polypeptide. The invention also provides methods for producing isoprene from cultured cells having reduced accumulation of intermediates (such as mevalonate, isopentenyl diphosphate, 3,3-dimethylallyl diphosphate, geranyl diphosphate, or farnesyl diphosphate) in the biosynthesis of isoprene or isoprenoids that may otherwise cause undesirable amounts of growth inhibition, toxicity, or cell death. The resulting isoprene compositions may have increased yields and/or purity of isoprene.