Analysis of actin synthesis in early sea urchin development.
Analysis of actin synthesis in early sea urchin development.
复制标题
海胆早期发育过程中肌动蛋白合成的分析。
DOI:
10.1016/0012-1606(82)90188-9
复制
发表时间:
1982
影响因子:
2.7
通讯作者:
CrainJr,WR
中科院分区:
文献类型:
--
作者:
Durica,DS;CrainJr,WR
Earlier studies have shown that while actin represents one of the most abundant proteins in the sea urchin egg, actin mRNA levels and synthesis are relatively low in the embryo until approximately 8 hr after fertilization. At this time, mRNA abundance and protein synthesis begin to rise and by 18 hr the amount of actin mRNA has increased 10- to 25-fold. In this study, we have examined shifts in the synthesis of actin isoforms by two-dimensional gel electrophoresis and we have related these shifts to known changes in embryonic actin mRNAs.In vivolabeling of proteins orin vitrotranslation of RNA isolated from various developmental stages shows an increase inde novoactin synthesis which corresponds to the increases in actin mRNA. The predominant form of actin stored in the egg comigrates with mammalian β-actin and represents the major species synthesized at all stages examined. Two other actin variants migrate to the acidic and basic side of the β-actin-like species, but do not comigrate with mammalian α-and γ-actin markers. At blastula, these actin spots are present in the approximate ratios of 1:10:2 (acidic:β-like:basic). The more basic variant appears to represent an unacetlyated precursor of the predominant isoform and the acidic variant may also represent a modified derivative. These studies, comparing the appearance of protein variants with the appearance of specific actin gene transcripts, are consistent with the model that several expressed genes all encode the predominant isoform.
登录
查看更多内容
影响因子:
--
作者:
R. Laskey
通讯作者:
R. Laskey
影响因子:
2.7
作者:
B. Brandhorst
通讯作者:
B. Brandhorst
影响因子:
64.8
作者:
E. Zulauf;F. Sánchez;S. Tobin;U. Rdest;B. Mccarthy
通讯作者:
B. Mccarthy
影响因子:
5.6
作者:
VANDEKERCKHOVE, J;WEBER, K
通讯作者:
WEBER, K
影响因子:
7.8
作者:
A. Spudich;J. Spudich
通讯作者:
J. Spudich