ENHANCED ACYLTRANSFERASE POLYNUCLEOTIDES, POLYPEPTIDES, AND METHODS OF USE

摘要

The invention provides modified DGAT1 proteins that are modified in the N-terminal region upstream of the acyl-Co A binding site. The modified DGAT proteins show enhanced activity, without reduced protein accumulation when expressed in cells. The modified DGAT1 proteins of the invention can be expressed in cells to increase cellular lipid accumulation and/or modify the cellular lipid profile. The invention also provides polynucleotides encoding the modified DGAT1 proteins, cells and compositions comprising the polynucleotides or modified DGAT proteins, and methods using the modified DGAT1 proteins to produce oil.