Abstract：
:Histones regulate a variety of chromatin templated events by their post-translational modifications (PTMs). Although there are extensive reports on the PTMs of canonical histones, the information on the histone variants remains very scanty. Here, we report the identification of different PTMs, such as acetylation, methylation, and phosphorylation of a major mammalian histone variant TH2B. Our mass spectrometric analysis has led to the identification of both conserved and unique modifications across tetraploid spermatocytes and haploid spermatids. We have also computationally derived the 3-dimensional model of a TH2B containing nucleosome in order to study the spatial orientation of the PTMs identified and their effect on nucleosome stability and DNA binding potential. From our nucleosome model, it is evident that substitution of specific amino acid residues in TH2B results in both differential histone-DNA and histone-histone contacts. Furthermore, we have also observed that acetylation on the N-terminal tail of TH2B weakens the interactions with the DNA. These results provide direct evidence that, similar to somatic H2B, the testis specific histone TH2B also undergoes multiple PTMs, suggesting the possibility of chromatin regulation by such covalent modifications in mammalian male germ cells.
journal_name
J Proteome Resjournal_title
Journal of proteome researchauthors
Pentakota SK,Sandhya S,P Sikarwar A,Chandra N,Satyanarayana Rao MRdoi
10.1021/pr500597asubject
Has Abstractpub_date
2014-12-05 00:00:00pages
5603-17issue
12eissn
1535-3893issn
1535-3907journal_volume
13pub_type
杂志文章abstract：:During vertebrate central nervous system development, the apical neuroepithelium is bathed with embryonic Cerebrospinal Fluid (e-CSF) which plays regulatory roles in cortical cell proliferation and maintenance. Here, we report the first proteomic analysis of human e-CSF and compare it to an extensive proteomic analysi...
journal_title：Journal of proteome research
pub_type： 杂志文章
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journal_title：Journal of proteome research
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abstract：:Direct tissue profiling and imaging mass spectrometry (MS) provides a detailed assessment of the complex protein pattern within a tissue sample. MALDI MS analysis of thin tissue sections results in over of 500 individual protein signals in the mass range of 2 to 70 kDa that directly correlate with protein composition ...
journal_title：Journal of proteome research
pub_type： 杂志文章,评审
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.7b00046
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr2001918
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journal_title：Journal of proteome research
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pub_type： 杂志文章
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journal_title：Journal of proteome research
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr700685e
更新日期：2008-02-01 00:00:00
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journal_title：Journal of proteome research
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr5007729
更新日期：2015-01-02 00:00:00
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journal_title：Journal of proteome research
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doi：10.1021/pr900811x
更新日期：2010-01-01 00:00:00
abstract：:Roux-en-Y gastric bypass (RYGB) is one of the most effective treatments for long-term weight loss and diabetes remission; however, the mechanisms underlying these changes are not clearly understood. In this study, the serum metabolic profiles of 23 remission and 12 nonremission patients with type 2 diabetes mellitus (...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.6b00022
更新日期：2016-04-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr200527z
更新日期：2011-09-02 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr100336e
更新日期：2010-09-03 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr201200n
更新日期：2012-05-04 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.8b00155
更新日期：2018-06-01 00:00:00
abstract：:Sensitive detection of molecular biomarkers in clinical samples is crucially important in disease diagnostics. This paper reports the development of an aptamer microarray platform combined with sol-gel technology to identify low-abundance targets in complex serum samples. Because of the nanoporous structure of the sol...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr100300t
更新日期：2010-11-05 00:00:00
abstract：:Proteins are continuously exposed to diverse chemical stresses, and the resulting chemical modifications can provide significant information on biological events. Keratins are the main constituent of human skin and are the major target proteins of various chemical modifications. We have previously developed a mass spe...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/acs.jproteome.0c00406
更新日期：2020-09-04 00:00:00
abstract：:The HIV-1-associated neurocognitive disorder occurs in approximately one-third of infected individuals. It has persisted in the current era of antiretroviral therapy, and its study is complicated by the lack of biomarkers for this condition. Since the cerebrospinal fluid is the most proximal biofluid to the site of pa...
journal_title：Journal of proteome research
pub_type： 杂志文章
doi：10.1021/pr800854t
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journal_title：Journal of proteome research
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journal_title：Journal of proteome research
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doi：10.1021/pr5003142
更新日期：2014-06-06 00:00:00
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journal_title：Journal of proteome research
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更新日期：2009-10-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章,评审
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更新日期：2004-09-01 00:00:00
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journal_title：Journal of proteome research
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更新日期：2011-07-01 00:00:00
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journal_title：Journal of proteome research
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更新日期：2009-03-01 00:00:00
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journal_title：Journal of proteome research
pub_type： 杂志文章
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更新日期：2013-05-03 00:00:00
