Translated Titles

Key Enzymes in Starch Synthesis in Plants


康国章(Guo-Zhang Kang);王永华(Yong-Hua Wang);郭天财(Tian-Cai Guo);朱云集(Yun-Ji Zhu);官春云(Chun-Yun Guan)

Key Words

淀粉 ; 突变体 ; 生物合成 ; 基因工程 ; starch ; mutants ; biosynthesis ; gene engineering



Volume or Term/Year and Month of Publication

28卷1期(2006 / 01 / 01)

Page #

110 - 116

Content Language


Chinese Abstract


English Abstract

It is composed of two types of α-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 α-1, 4-linked glucan chains using ACP-Glc; starch-branching enzymes, which introduce α-1, 6 branch points to form amylopectin; and starch debranching enzymes, which hydrolyze α-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.

Topic Category 醫藥衛生 > 醫藥總論
醫藥衛生 > 基礎醫學
生物農學 > 生物科學