NDLI: Stabilization of non-histone proteins by copper ions does not alter chromatin properties of polythene chromosomes of Chironomus plumosus

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Stabilization of non-histone proteins by copper ions does not alter chromatin properties of polythene chromosomes of Chironomus plumosus

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Stabilization of non-histone proteins by copper ions does not alter chromatin properties of polythene chromosomes of Chironomus plumosus

Content Provider	Springer Nature Link
Author	Makarov, M. S. Chentsov, Yu. S.
Copyright Year	2011
Abstract	Our previous study showed that the body of polythene chromosomes can be identified even after removal of all histones and DNA in the presence of 2 mM CuCl$_{2}$; this suggested that copper ions stabilized the bonds between non-histone proteins. In this study we tried to find out if copper ions bind with non-histone proteins reversibly or irreversibly. It is shown that the bodies of normal chromosomes and chromosomes stabilized by 2 mM CuCl$_{2}$ swell with partial disappearance of the banding pattern in a hypotonic solution (0.055 M NaCl) without copper ions. The selective removal of bivalent cations by 10 mM EDTA solution resulted in decondensation of normal polythene and stabilized chromosomes. The treatment of nuclear protein matrix of polythene chromosomes preparations with 10 mM EDTA resulted in the swelling of polythene chromosome body and disappearance of the banding pattern but their morphological organization maintained.
Starting Page	70
Ending Page	76
Page Count	7
File Format	PDF
ISSN	19907478
Journal	Biochemistry (Moscow) Supplement Series A: Membrane and Cell Biology
Volume Number	5
Issue Number	1
e-ISSN	19907494
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-03-05
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	polythene chromosome stabilization nuclear protein matrix (NPM) hypotonia Cell Biology
Content Type	Text
Resource Type	Article
Subject	Cell Biology Biochemistry Biophysics

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Stabilization of non-histone proteins by copper ions does not alter chromatin properties of polythene chromosomes of Chironomus plumosus

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