发明名称 |
Recombinant enzyme with altered feedback sensitivity |
摘要 |
The present invention relates to the use of recombinant homoserine transsuccinylase enzymes with altered feedback sensitivity (MetA*) and possibly recombinant S-adenosyl methionine synthetase enzymes with reduced activity (MetK*) for the production of methionine, its precursors or derivatives thereof. |
申请公布号 |
US8795990(B2) |
申请公布日期 |
2014.08.05 |
申请号 |
US200511579907 |
申请日期 |
2005.05.12 |
申请人 |
Metabolic Explorer |
发明人 |
Bestel-Corre Gwénaëlle;Chateau Michel;Figge Rainer;Raynaud Céline;Soucaille Philippe |
分类号 |
C12P13/04;C12P13/12 |
主分类号 |
C12P13/04 |
代理机构 |
DLA Piper LLP (US) |
代理人 |
DLA Piper LLP (US) |
主权项 |
1. A method for the preparation of methionine, its precursors or products derived thereof, in a fermentative process with a microorganism where L-homoserine is converted into O-succinylhomoserine with a homoserine transsuccinylase comprising the step of culturing the microorganism on an appropriate culture medium and recovering methionine, its precursors or products derived thereof once produced, wherein the homoserine transsuccinylase is a mutated homoserine transsuccinylase with reduced sensitivity for the feedback inhibitors S-adenosylmethionine and methionine, wherein the homoserine transsuccinylase has the sequence as shown in SEQ ID NO:1 and wherein the conserved amino acid Q at position 64 is replaced with a glutamic acid (E) or an aspartic acid (D). |
地址 |
FR |