%0 Journal Article
%T Key Enzymes in Starch Synthesis in Plants<br>植物淀粉合成的调控酶
%A KANG Guo-Zhang
%A WANG Yong-Hua
%A GUO Tian-Cai
%A ZHU Yun-Ji
%A GUAN Chun-Yun
%A <br>康国章
%A 王永华
%A 郭天财
%A 朱云集
%A 官春云
%J 遗传
%D 2006
%I 
%X Starch, the most common form of stored carbon in plants, is both the major food source for mankind and important raw material for many industries. It is composed of two types of alpha-1,4-linked glucan polymer: essentially unbranched amylose and regularly branched amylopectin, and synthesized in photosynthetic and non-photosynthetic organs. Starch is synthesized via four committed enzyme steps: ADP-Glc pyrophosphorylase, which synthesizes sugar nucleotide precursors; starch synthase, which extends the alpha-1,4-linked glucan chains using ADP-Glc; starch-branching enzymes, which introduce alpha-1,6 branch points to form amylopectin; and starch debranching enzymes, which hydrolyze alpha-1,6 branches in glucans. In this paper, recent advances in biochemical characterizations and gene engineering concerning these enzymes were reviewed, and the achievements in gene engineering involved in manipulation of starch amount and quality were also cited.
%K starch
%K mutants
%K biosynthesis
%K gene engineering<br>淀粉
%K 突变体
%K 生物合成
%K 基因工程
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=3E23F50E071DF18E21B2F5AEE4F1FA5E&aid=D7B6AF34C3E663C9&yid=37904DC365DD7266&vid=D3E34374A0D77D7F&iid=CA4FD0336C81A37A&sid=4DB1E72614E68564&eid=8477411EEDB08A86&journal_id=0253-9772&journal_name=遗传&referenced_num=3&reference_num=42