ANALYSIS OF CCAAT BOX TRANSCRIPTION FACTOR BINDING-ACTIVITY DURING EARLY XENOPUS-LAEVIS EMBRYOGENESIS

被引：10

作者：

OVSENEK, N ^{[1
]}

KARN, HA ^{[1
]}

HEIKKILA, JJ ^{[1
]}

机构：

[1] UNIV WATERLOO,DEPT BIOL,WATERLOO N2L 3G1,ONTARIO,CANADA

来源：

DEVELOPMENTAL BIOLOGY | 1991年 / 145卷 / 02期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0012-1606(91)90130-U

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Unfertilized eggs and pre-midblastula (MBT) stage Xenopus embryos were found to contain a large pool of maternally derived CCAAT box-binding transcription factor (CBTF). DNA mobility shift experiments using embryonic extracts prepared with either low or high salt buffers suggest that Xenopus CBTF may not interact with embryonic DNA until the late blastula stage, a time point coincident with the increase in zygotic transcription. Additionally, photoaffinity-labeling experiments revealed that both pre- and post-MBT CBTF-binding activities were composed of at least three proteins having relative molecular masses of 68, 52, and 42 kDa. © 1991.

引用

页码：323 / 327

页数：5

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