小麦籽实中蛋白质-Cd,Pb结合形态及其稳定性

何孟常; 杨居荣

环境化学

何孟常, 杨居荣. 小麦籽实中蛋白质-Cd,Pb结合形态及其稳定性[J]. 环境化学, 2001, 20(2): 124-128.

引用本文:

何孟常, 杨居荣. 小麦籽实中蛋白质-Cd,Pb结合形态及其稳定性[J]. 环境化学, 2001, 20(2): 124-128.

He Mengchang, Yang Jurong. THE PROTEIN - BINDING FORMS OF CADMIUM AND LEAD INPOLLUTED WHEAT SEED AND ITS STABILITY[J]. Environmental Chemistry, 2001, 20(2): 124-128.

Citation:

He Mengchang, Yang Jurong. THE PROTEIN - BINDING FORMS OF CADMIUM AND LEAD INPOLLUTED WHEAT SEED AND ITS STABILITY[J]. Environmental Chemistry, 2001, 20(2): 124-128.

小麦籽实中蛋白质-Cd,Pb结合形态及其稳定性

基金项目:
国家自然科学基金资助项目(49771069)

THE PROTEIN - BINDING FORMS OF CADMIUM AND LEAD INPOLLUTED WHEAT SEED AND ITS STABILITY

1.
State Key Joint Laboratory of Environmental Simulation and Polluton Control, Institute of Environmental Sciences, Beijing Normal University, Beijing, 100875
Fund Project:

摘要: 在体外消化酶模拟条件下,对小麦籽实中Cd,Pb蛋白质结合体的稳定性进行了研究。结果表明：小麦籽实中存在的表观分子量为54.5×103和5.5×103的蛋白质-Cd,Pb结合体,在体外胃蛋白酶和胰蛋白酶消化后,蛋白质结构发生变化。特别是分子量为54.5×103的Cd,Pb-蛋白质结合体不稳定,容易被胰蛋白酶分解,变成分子量为5.5×103的稳定的Cd,Pb-蛋白质结合体或更小的多肽。
- 小麦籽实 /
- 重金属－蛋白质结合形态 /
- 稳定性 /
- 消化酶
Abstract: The stability of protein - binding forms of Cd and Pb in polluted wheat seed was evaluated using the treatment of gastrointestinal enzyme digestion. The results showed that after the treatment of pepsin and trypsin enzyme digestion, the protein - bin-ding forms of Cd and Pb with molecular weight of 54.5 �103 and 5.5 �103 in wheat seed was decomposed. Especially, the protein-binding forms of Cd and Pb with the apparent molecular weight of 54.5 �103 were easily decom-posed by the trypsin and changed into the low molecular weight protein - binding forms (5.5 �103) or tiny peptide chain.
- wheat seed /
- protein - binding forms of heavy metals /
- stability /
- digestive en-zyme

点击查看大图

计量

文章访问数: 484
HTML全文浏览数: 484
PDF下载数: 163
施引文献: 0

何孟常, 杨居荣. 小麦籽实中蛋白质-Cd,Pb结合形态及其稳定性[J]. 环境化学, 2001, 20(2): 124-128.

引用本文:

何孟常, 杨居荣. 小麦籽实中蛋白质-Cd,Pb结合形态及其稳定性[J]. 环境化学, 2001, 20(2): 124-128.

He Mengchang, Yang Jurong. THE PROTEIN - BINDING FORMS OF CADMIUM AND LEAD INPOLLUTED WHEAT SEED AND ITS STABILITY[J]. Environmental Chemistry, 2001, 20(2): 124-128.

Citation:

He Mengchang, Yang Jurong. THE PROTEIN - BINDING FORMS OF CADMIUM AND LEAD INPOLLUTED WHEAT SEED AND ITS STABILITY[J]. Environmental Chemistry, 2001, 20(2): 124-128.

小麦籽实中蛋白质-Cd,Pb结合形态及其稳定性

收稿日期: 2000-05-15

基金项目:

国家自然科学基金资助项目(49771069)

关键词:

摘要: 在体外消化酶模拟条件下,对小麦籽实中Cd,Pb蛋白质结合体的稳定性进行了研究。结果表明：小麦籽实中存在的表观分子量为54.5×103和5.5×103的蛋白质-Cd,Pb结合体,在体外胃蛋白酶和胰蛋白酶消化后,蛋白质结构发生变化。特别是分子量为54.5×103的Cd,Pb-蛋白质结合体不稳定,容易被胰蛋白酶分解,变成分子量为5.5×103的稳定的Cd,Pb-蛋白质结合体或更小的多肽。

English Abstract

THE PROTEIN - BINDING FORMS OF CADMIUM AND LEAD INPOLLUTED WHEAT SEED AND ITS STABILITY

1. State Key Joint Laboratory of Environmental Simulation and Polluton Control, Institute of Environmental Sciences, Beijing Normal University, Beijing, 100875

Received Date: 2000-05-15

Fund Project:

Keywords:

wheat seed /
protein - binding forms of heavy metals /
stability /
digestive en-zyme

Abstract: The stability of protein - binding forms of Cd and Pb in polluted wheat seed was evaluated using the treatment of gastrointestinal enzyme digestion. The results showed that after the treatment of pepsin and trypsin enzyme digestion, the protein - bin-ding forms of Cd and Pb with molecular weight of 54.5 �103 and 5.5 �103 in wheat seed was decomposed. Especially, the protein-binding forms of Cd and Pb with the apparent molecular weight of 54.5 �103 were easily decom-posed by the trypsin and changed into the low molecular weight protein - binding forms (5.5 �103) or tiny peptide chain.

全文HTML

参考文献 (0)

下载: 全尺寸图片幻灯片

返回文章

用微信扫码二维码

分享至好友和朋友圈

小麦籽实中蛋白质-Cd,Pb结合形态及其稳定性

THE PROTEIN - BINDING FORMS OF CADMIUM AND LEAD INPOLLUTED WHEAT SEED AND ITS STABILITY

计量

出版历程

小麦籽实中蛋白质-Cd,Pb结合形态及其稳定性

English Abstract

THE PROTEIN - BINDING FORMS OF CADMIUM AND LEAD INPOLLUTED WHEAT SEED AND ITS STABILITY

全文HTML

目录