CHROMOSOME REPLICATION AND SYNTHESIS OF NON-HISTONE PROTEINS IN GIANT POLYTENE CHROMOSOMES

被引:17
作者
CAVE, MD
机构
[1] Max-Planck-Institut für Biologic, Abtcilung BEEEMANN, Tübingen
[2] Department of Anatomy and Cell Biology, University of Pittsburgh
关键词
D O I
10.1007/BF02327720
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Synthesis of chromosomal proteins was studied by means of autoradiography in giant polytene chromosomes of Chironomus thummi. Incorporation of tryptophane-H3 into non-histone proteins of the chromosome does not increase during DNA synthesis. Grain count data reveal that chromosomes of cells which are actively replicating DNA do not differ from non-replicating cells in regard to the incorporation of tryptophane-H3 into chromosomal non-histone protein. Chromosomes of cells which are replicating DNA incorporate about 2 times more lysine-H3 than do non-DNA replicating cells. Synthesis of histones accounts for this increase in lysinc-H3 incorporation. © 1968 Springer-Verlag.
引用
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页码:392 / +
页数:1
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