Abstract:
:Post-translational modifications (PTMs) of histone proteins play a crucial role in the regulation of chromatin structure and functions. Studies in the last few decades have revealed the significance of histone PTMs in key cellular processes including DNA replication, repair, transcription, apoptosis and cell cycle regulation. The PTMs on histones are carried out by chromatin modifiers, which are reversible in nature. The dynamic activity of chromatin modifiers maintains the levels of different PTMs on histones. The modified histones are recognized by reader proteins, which recruit effector proteins to regulate the function. The interplay between histone PTMs and chromatin dynamics plays a major role in the regulation of most of the cellular processes. Importantly, the perturbations in the histone PTMs by various intrinsic or extrinsic factors can cause defects in fundamental cellular processes leading to a wide range of diseases. The proteolytic clipping of histone proteins has also been shown to regulate many biological processes. Histone clipping has been observed from yeast to mammals, suggesting that this mechanism is a conserved epigenetic phenomenon. In this review, we have summarized the significance of histone clipping and provided future directions to comprehend the mechanism of this distinct and poorly understood epigenetic event.
journal_name
J Mol Bioljournal_title
Journal of molecular biologyauthors
Azad GK,Swagatika S,Kumawat M,Kumawat R,Tomar RSdoi
10.1016/j.jmb.2018.07.013subject
Has Abstractpub_date
2018-09-14 00:00:00pages
3051-3067issue
18 Pt Beissn
0022-2836issn
1089-8638pii
S0022-2836(18)30294-8journal_volume
430pub_type
杂志文章,评审abstract::We have determined the sites that are preferentially cleaved by Mn(T4MPyP) (where T4MPyP is the dianion of 5, 10, 15, 20, tetrakis (4-N-methylpyridine)porphyrin) on synthetic DNAs and on both intrinsically curved and average-shaped natural DNA sequences. On the basis of cleavage selectivity and of DNase I footprinting...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1998.1969
更新日期:1998-09-11 00:00:00
abstract::Mutational experiments show how changes in the hydrophobic cores of proteins affect their stabilities. Here, we estimate these effects computationally, using four-body likelihood potentials obtained by simplicial neighborhood analysis of protein packing (SNAPP). In this procedure, the volume of a known protein structu...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.2001.4906
更新日期:2001-08-24 00:00:00
abstract::The rotavirus double-layered particle (DLP) is a molecular machine that transcribes 11 genomic segments of double-stranded RNA into full-length mRNA segments during viral replication. DLPs from the human Wa strain of virus, belonging to subgroup II (SG II), possess a significantly reduced level of transcriptase activi...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2005.11.049
更新日期:2006-02-10 00:00:00
abstract::Transcription of the rabbit alpha-globin gene begins primarily at the cap site, although some upstream start sites are also observed. Analysis by RNA polymerase run-on assays in nuclei shows that transcription continues at a high level past the polyadenylation site, after which the polymerase density actually increase...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(91)90011-t
更新日期:1991-07-20 00:00:00
abstract::Spiders that spin orb webs secrete seven types of silk. Although the spinning process of the dragline thread is beginning to be understood, the molecular events that occur in spiders' opisthosomal glands, which produce the other fibers, are unknown due to a lack of data regarding their initial and final structures. Ta...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2010.10.052
更新日期:2011-01-07 00:00:00
abstract::The folded 10 S monomer conformation of smooth muscle myosin traps the hydrolysis products ADP and Pi in its active sites. To test the significance of this, we have searched for equivalent trapping in other conformational and assembly states of avian gizzard and brush border myosins, using formycin triphosphate (FTP) ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(88)90100-3
更新日期:1988-09-05 00:00:00
abstract::The stability of membrane proteins differs from globular proteins due to the presence of nonpolar membrane-spanning regions. Using a dataset of 929 membrane protein mutations whose effects on thermal stability (ΔTm) were experimentally determined, we found that the average ΔTm due to 190 stabilizing and 232 destabiliz...
journal_title:Journal of molecular biology
pub_type: 杂志文章,评审
doi:10.1016/j.jmb.2020.09.005
更新日期:2020-09-10 00:00:00
abstract::The role of the sigma 70 subunit of Escherichia coli RNA polymerase in transcription activation by positive transcription factors was investigated. For this purpose, we constructed a nested set of E. coli rpoD deletion mutants generating carboxy-terminally truncated sigma 70 subunits of RNA polymerase in a high-expres...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1994.1001
更新日期:1994-01-14 00:00:00
abstract::Analysis of 64 lambda phage proteins revealed the presence of four strong variants of the conserved DNA binding fold of repressors. Three of them have been known from previous studies but the Nu 1 gene product is a new member of the family of proteins that may bind strongly to DNA in the repressor-like fashion. It is ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(86)90430-4
更新日期:1986-09-05 00:00:00
abstract::The comet motility assay, inspired by Listeria locomotion, has been used extensively as an in vitro model to study the structural and motile properties of the actin cytoskeleton. However, there are no quantitative measurements of the mechanical properties of these actin comets. In this work, we use nanoindentation bas...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2011.08.054
更新日期:2011-10-28 00:00:00
abstract::Adenylate and guanylate cyclases, having different but related substrates, are a paradigm for the study of substrate discrimination. A prokaryotic adenylate cyclase gene, phylogenetically related to eukaryotic counterparts, was screened for mutants remodelling the enzyme's specificity. In a first step, a mutant was se...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(92)90093-y
更新日期:1992-06-20 00:00:00
abstract::Small multidrug resistance (SMR) transporters contribute to bacterial resistance by coupling the efflux of a wide range of toxic aromatic cations, some of which are commonly used as antibiotics and antiseptics, to proton influx. EmrE is a prototypical small multidrug resistance transporter comprising four transmembran...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2006.08.072
更新日期:2006-11-17 00:00:00
abstract::Fibrillin-rich microfibrils are the major structural components of the extracellular matrix that provide elasticity in a majority of connective tissues. The basis of elastic properties lies in the organization of fibrillin molecules, which, unfortunately, is still poorly understood. An X-ray diffraction study of hydra...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2008.09.004
更新日期:2008-11-28 00:00:00
abstract::The coat protein of positive-stranded RNA viruses often contains a positively charged tail that extends toward the center of the capsid and interacts with the viral genome. Electrostatic interaction between the tail and the RNA has been postulated as a major force in virus assembly and stabilization. The goal of this ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2012.03.023
更新日期:2012-06-22 00:00:00
abstract::The reverse transcriptase (RT) of HIV-1 and feline immunodeficiency virus (FIV) consist of two subunits of 51 kDa (p51) and 66 kDa (p66). In order to elucidate the role of p51 in the heterodimer, chimeric HIV-1/FIV RT heterodimers were constructed and characterized. The FIV RT p51/HIV-1 RT p66 chimera showed a 2.5-fol...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1998.1739
更新日期:1998-05-15 00:00:00
abstract::The hairpin ribozyme belongs to the family of small catalytic RNAs that cleave RNA substrates in a reversible reaction that generates 2',3'-cyclic phosphate and 5'-hydroxyl termini. The hairpin catalytic motif was discovered in the negative strand of the tobacco ringspot virus satellite RNA, where hairpin ribozyme-med...
journal_title:Journal of molecular biology
pub_type: 杂志文章,评审
doi:10.1006/jmbi.2000.3560
更新日期:2000-03-24 00:00:00
abstract::The Hippo pathway plays a crucial role in growth control, proliferation and tumor suppression. Activity of the signaling pathway is associated with cell density sensing and tissue organization. Furthermore, the Hippo pathway helps to coordinate cellular processes through crosstalk with growth-factor-mediated signaling...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2015.04.015
更新日期:2015-10-23 00:00:00
abstract::We have examined expression of the lambdacI operon in single cells via a rex Colon, two colons gfp substitution. Although average fluorescence agreed with expectations for expression of lambda-repressor, fluorescence fluctuated greatly from cell-to-cell. Fluctuations in repressor concentration are not predicted by pre...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2003.09.037
更新日期:2003-11-28 00:00:00
abstract::Homogeneous detergent-solubilized B873 light-harvesting complexes from a carotenoid-less mutant of the purple non-sulfur bacterium, Rhodospirillum rubrum G9, were reassembled spontaneously into two-dimensional (2D) hexagonal arrays during extensive and controlled dialysis. As the complexes contain only 1 to 2 mol phos...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1993.1298
更新日期:1993-05-20 00:00:00
abstract::A new method is suggested here for topology prediction of helical transmembrane proteins. The method is based on the hypothesis that the localizations of the transmembrane segments and the topology are determined by the difference in the amino acid distributions in various structural parts of these proteins rather tha...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1998.2107
更新日期:1998-10-23 00:00:00
abstract::Ribosomes are large nucleoproteins of approximately 3 X 10(6) Mr. In contrast to helical or spherical nucleoproteins (viruses) of similar size (which consist of several hundred small asymmetric units reproduced by symmetry), ribosomes are completely asymmetric; therefore, the amount of structural information (defined ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(86)90366-9
更新日期:1986-11-20 00:00:00
abstract::The lumazine synthase/riboflavin synthase complex of Bacillus subtilis consists of an icosahedral capsid of 60 beta subunits enclosing a core of 3 alpha subunits. The preparation of reconstituted hollow capsids consisting of 60 beta subunits and their crystallization in a hexagonal (space group P6(3)22) and in a monoc...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(92)90105-s
更新日期:1992-06-20 00:00:00
abstract::Transcription complexes containing Escherichia coli RNA polymerase terminate RNA synthesis in response to intrinsic (rho-independent) terminators encoded in the DNA template. This type of termination involves the formation of a hairpin structure in the nascent RNA, leading to release of the RNA and polymerase from the...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1994.1702
更新日期:1994-11-18 00:00:00
abstract::Reverse transcription of HIV-1 genomic RNA to double-stranded DNA by reverse transcriptase (RT) is a critical step in HIV-1 replication. This process relies on two viral proteins, the RT enzyme and nucleocapsid protein NCp7 that has well documented nucleic acid chaperone properties. At the beginning of the linear DNA ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/s0022-2836(03)00244-4
更新日期:2003-04-18 00:00:00
abstract::We have previously identified 20 different fusidic acid-resistant alleles of fusA, encoding mutant forms of the ribosomal translocase EF-G. One of these, P413L, is used here as the starting point in selections for internal revertants, identifying 20 different pseudo-wild-type forms of EF-G. We have also identified two...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1996.0259
更新日期:1996-05-10 00:00:00
abstract::The human kinetochore is a highly complex macromolecular structure that connects chromosomes to spindle microtubules (MTs) in order to facilitate accurate chromosome segregation. Centromere-associated protein E (CENP-E), a member of the kinesin superfamily, is an essential component of the kinetochore, since it is req...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2004.05.053
更新日期:2004-07-23 00:00:00
abstract::Tafazzin is a mitochondrial enzyme that exchanges fatty acids between phospholipids by phospholipid-lysophospholipid transacylation. The reaction alters the molecular species composition and, as a result, the physical properties of lipids. In vivo, the most important substrate of tafazzin is the mitochondria-specific ...
journal_title:Journal of molecular biology
pub_type: 杂志文章,评审
doi:10.1016/j.jmb.2020.03.026
更新日期:2020-08-21 00:00:00
abstract::The crystal structure of the ferredoxin:NADP+ reductase (FNR) from the cyanobacterium Anabaena PCC 7119 has been determined at 2.6 A resolution by multiple isomorphous replacement and refined using 15.0 A to 1.8 A data, collected at 4 degrees C, to an R-factor of 0.172. The model includes 303 residues, the flavin aden...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1996.0553
更新日期:1996-10-18 00:00:00
abstract::The N-terminal segment (FR-H1) of the heavy chain (V(H)) of antibodies shows significant conformational variability correlating with the nature of the amino acids H6, H7 and H10 (Kabat H9). In this study, we have established a causal relationship between the local sequence and the structure of this framework region an...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.2001.4665
更新日期:2001-06-08 00:00:00
abstract::Structural studies have revealed some of the organizing principles and mechanisms involved in the assembly of the COPII coat including the location of the Sec23/24 adapter layer. Previous studies, however, were unable to unambiguously determine the positions of Sec23 and Sec24 in the coat. Here, we have determined a c...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2012.04.024
更新日期:2012-07-20 00:00:00