Analysis of proteins synthesized by 9.5 day mouse embryos: determination of cardiac and noncardiac proteins.
Analysis of proteins synthesized by 9.5 day mouse embryos: determination of cardiac and noncardiac proteins.
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9.5 天小鼠胚胎合成的蛋白质分析：心脏和非心脏蛋白质的测定。
DOI：
10.1002/mrd.1080290209
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发表时间：
1991
影响因子：
2.5
通讯作者：
Kurnit,DM
中科院分区：
文献类型：
--
作者：
VanKeuren,ML;Iacob,RA;Kurnit,DM
To catalog polypeptides that were specific to developing hearts, we separated35S‐methionine‐labeled 9.5 day mouse embyros into cardiac and noncardiac (carcass) components. Two‐dimensional gels were then used to analyze the polypeptides synthesized in these two fractions. As a result, we were able to distinguish polypeptides that were specific to or increased in the heart as well as those polypeptides that were specific to or inceased in the embryo minus the dissected heart. Using this analysis, there were two polypeptides that were cardiac‐specific and 17 that were expressed at increased levels by at least twofold in the heart. The cardiac‐specific polypeptides may be used in further studies to identify early cardiac tissue. Conversely, there were 26 polypeptides unique to noncardiac structures and an additional 15 that were increased in the carcass more than twofold relative to the heart. The noncardiac‐specific polypeptides may be used to define contamination of putative cardiac tissue with noncardiac material. Two of the polypeptides expressed more abundantly in the carcass appeared to correspond to known proteins in the mouse fibroblast database, cyclin and tropomyosin 4. Thus the heart at 9.5 days of murine development can be distinguished readily from the remainder of the embryonic mouse both macroscopically and on two‐dimensional gels.
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