منابع مشابه
Histone F1 of Tetrahymena Macronuclei
Histone fraction F1 has been isolated and purified from macronuclei of the ciliated protozoan, Tetrahymena pyriformis. In many respects, Tetrahymena F1 is similar to that of other organisms. It is the only Tetrahymena histone soluble in 5% perchloric acid or 5% trichloroacetic acid, has a higher molecular weight than any other Tetrahymena histone, is the histone most easily dissociated from Tet...
متن کاملTiming of the appearance of macronuclear-specific histone variant hv1 and gene expression in developing new macronuclei of Tetrahymena thermophila
Vegetative cells of the ciliated protozoan Tetrahymena thermophila contain a transcriptionally active macronucleus and a transcriptionally inactive micronucleus. Earlier studies ( Allis , C. D., C. V. C. Glover , J. K. Bowen, and M. A. Gorovsky , 1980, Cell, 20:609-617; and Allis , C. D., Y. S. Ziegler , M. A. Gorovsky , and J. B. Olmsted, 1982, Cell, 31:131-136) demonstrated the existence of a...
متن کاملNucleus-specific and temporally restricted localization of proteins in Tetrahymena macronuclei and micronuclei
Labeled nuclear proteins were microinjected into the cytoplasm of Tetrahymena thermophila. Macronuclear H1, calf thymus H1, and the SV40 large T antigen nuclear localization signal linked to BSA accumulated specifically in macronuclei, even if cells were in micronuclear S phase or were nonreplicating. The way in which histone H4 localized to either the macronucleus or the micronucleus suggested...
متن کاملSynthesis of Deoxyribonucleic Acid by Micro- and Macronuclei of Tetrahymena Pyriformis
Evidence as to the times of DNA synthesis in micronucleate Tetrahymena pyriformis (mating type II, variety 1) has been obtained by briefly exposing individuals of different ages to tritiated thymidine, returning them to non-radioactive medium, fixing at division, and preparing autoradiographs. A variable length of interphase, ranging from a few minutes to about 2 hours, has been found to preced...
متن کاملInteraction of f1 histone with superhelical DNA.
The superhelicity of double-stranded, closed circular SV40 DNA was altered by the addition of various amounts of ethidium bromide. The interaction of f1 histone with the series of molecules of various superhelicities was studied. The extent of interaction increases with increasing superhelicity regardless of whether it is of the positive or negative sense. The interaction of f1 histone with sup...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 1974
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.61.1.134