天气预报15天查询> 其他> 如何区别内切核酸酶和外切核酸酶

如何区别内切核酸酶和外切核酸酶

更新时间: 2020-09-16 00:00:00     

内切,就是核酸酶从核苷酸链如DNA链中间切开,这样的核酸酶就是内切核酸酶,外切作用于核酸链的两端,就是核酸酶从与核酸链相互作用,如在DNA复制过程中,从DNA聚合酶添加dNTP的一段切去几个或者一小段核苷酸,这样的酶就叫外切核酸酶,有5‘到3’和3‘到5’两个方向的外切核酸酶两种,在DNA修复过程中,一般都是先内切核酸梅作用,断裂附近含有损伤的碱基序列,再是外切核算酶作用切除一小段含有损伤的核苷酸序列。

关键词: 如何 区别 核酸

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-213457/ | 耗时:0.3430 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=213457 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=213457 LIMIT 0,1
select * from tbl_Articles_sphinx where id=213457 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1065237,1053584,1120641,1868750,1092367,1100849,1733256,1301637,1126226,2473453,1112632,1112676,1383666,1525672,1299988,1125241,1076029,1062566,1054182,3393386,2373501,1127529,1065001,1120006,1903689,1062130,1070262,1041499,1749538,348541) ORDER BY field (ArticleID,1065237,1053584,1120641,1868750,1092367,1100849,1733256,1301637,1126226,2473453,1112632,1112676,1383666,1525672,1299988,1125241,1076029,1062566,1054182,3393386,2373501,1127529,1065001,1120006,1903689,1062130,1070262,1041499,1749538,348541)