Regulated nucleosome mobility and the histone code.

Nat Struct Mol Biol

Department of Biophysics and Biophysical Chemistry, Johns Hopkins School of Medicine, 733 North Broadway Street, Baltimore, Maryland 21205, USA.

Published: November 2004


Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

Post-translational modifications of the histone tails are correlated with distinct chromatin states that regulate access to DNA. Recent proteomic analyses have revealed several new modifications in the globular nucleosome core, many of which lie at the histone-DNA interface. We interpret these modifications in light of previously published data and propose a new and testable model for how cells implement the histone code by modulating nucleosome dynamics.

Download full-text PDF

Source
http://dx.doi.org/10.1038/nsmb851DOI Listing

Publication Analysis

Top Keywords

histone code
8
regulated nucleosome
4
nucleosome mobility
4
mobility histone
4
code post-translational
4
post-translational modifications
4
modifications histone
4
histone tails
4
tails correlated
4
correlated distinct
4

Similar Publications

Posttranslational modifications (PTMs) of proteins are efficient biological mechanisms for expanding the genetic code and for regulating cellular physiology. However, there have been no systematic approaches to profile all the PTMs critical for autoreactive neoantigen production or the etiology and pathology of autoimmune diseases. In the present study, to gain insight into protein PTMs associated with systemic lupus erythematosus (SLE), we applied a mass spectrometry-based method for the comprehensive analysis of modified amino acids ("adductome").

View Article and Find Full Text PDF

Post-translational Modifications of the Nucleoid Protein H-NS: Sites, Mechanisms, and Regulatory Cues.

FEMS Microbiol Rev

September 2025

State Key Laboratory of Tropical Oceanography, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China.

Histone-like nucleoid structuring protein H-NS plays a pivotal role in orchestrating bacterial chromatin and regulating horizontal gene transfer (HGT) elements. In response to environmental signals, H-NS undergoes dynamic post-translational modifications (PTMs) that resemble the epigenetic codes of eukaryotic histones. This review explores how environmental cues regulate PTMs at specific sites within distinct domains of H-NS, thereby modulating its oligomerization and DNA-binding capabilities to reprogram bacterial responses.

View Article and Find Full Text PDF

Tissue-resident memory T cells (TRM) represent a heterogeneous population of T cells that exhibit both effector and memory functionalities. They express specific gene signatures that enable them to occupy tissues without recirculating, thus providing a first response against reencountered pathogens or antigens. TRM have been implicated in the pathogenesis of various diseases, including autoimmune disorders, infections, and cancers.

View Article and Find Full Text PDF

Targeting the akt/mtor signaling pathway by maprotiline leads to tumor suppression in T-cell lymphoma.

Ann Hematol

September 2025

Department of Clinical Laboratory, The Affiliated Li Huili Hospital, Ningbo University, 57 Xingning Road, Ningbo, 315000, China.

T-cell lymphoma (TCL) is a prevalent malignancy characterized by the aberrant proliferation of T cells. The molecular mechanism underlying TCL remains poorly understood, and effective therapeutic strategies are still limited. Maprotiline, a highly selective norepinephrine reuptake blocker, is primarily used in the treatment of various types of depression.

View Article and Find Full Text PDF

Transcriptional enhancers are DNA regulatory elements that control the levels and spatiotemporal patterns of gene expression during development, homeostasis, and pathophysiological processes. Enhancer identification and characterization at the genome-wide scale rely on their structural characteristics, such as chromatin accessibility, binding of transcription factors and cofactors, activating histone modifications, 3D interactions with other regulatory elements, as well as functional characteristics measured by massively parallel reporter assays and sequence conservation approaches. Recently, machine learning approaches and particularly deep learning models (Enformer, BPNet, DeepSTARR, etc.

View Article and Find Full Text PDF