Abstract:
:Recombination between RNAs associated with turnip crinkle virus is thought to occur during plus-strand synthesis at motifs resembling the 5'-ends of genomic, subgenomic and satellite RNAs. Common structural regions encompassing the motifs have been found for major crossover sites on two different minus-strand templates, with junctions preferentially located in a single-stranded region at the 3' base of a hairpin. Base changes, deletions and compensatory alteration constructed in and around the hairpin in the region of the turnip crinkle virus genomic RNA involved in recombination support the importance of the hairpin for normal crossover site selection. This region of the genomic RNA is also important for replication of the viral genomic RNA in plants and protoplasts, suggesting a common link between sequences required for recombination and viral replication.
journal_name
J Mol Bioljournal_title
Journal of molecular biologyauthors
Carpenter CD,Oh JW,Zhang C,Simon AEdoi
10.1006/jmbi.1994.0050subject
Has Abstractpub_date
1995-02-03 00:00:00pages
608-22issue
5eissn
0022-2836issn
1089-8638pii
S0022283684700507journal_volume
245pub_type
杂志文章abstract::In order to study the effect of internal dynamics on the accuracy of NMR structures in detail, we generated NOE distance data from a long molecular dynamics trajectory of BPTI. Cross-relaxation rates were calculated from the trajectory by analysis of the appropriate proton-proton vector autocorrelation functions. A cr...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1998.2323
更新日期:1999-01-15 00:00:00
abstract::The structure of protein L9 from the Bacillus stearothernophilus ribosome has been determined at 2.5 A resolution by refinement against single crystal X-ray diffraction data with additional constraints provided by NMR data. This highly elongated protein consists of two domains separated by a nine-turn connecting helix...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1996.0696
更新日期:1996-12-20 00:00:00
abstract::The terminal regions of monomeric hook protein from Salmonella typhimurium are known to be highly mobile and exposed to the solvent. Although hook protein exhibits an unusual far-UV circular dichroism spectrum, resembling that of random coil structures, our calorimetric experiments clearly demonstrate that the molecul...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1995.0453
更新日期:1995-08-25 00:00:00
abstract::The serendipitous observation of a C-H cdots, three dots, centered O hydrogen bond mediated polypeptide chain reversal in synthetic peptide helices has led to a search for the occurrence of a similar motif in protein structures. From a dataset of 634 proteins, 1304 helices terminating in a Schellman motif have been ex...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/s0022-2836(02)00715-5
更新日期:2002-09-27 00:00:00
abstract::Bovine platelet factor 4 has been crystallized by "vapor dilution" in space group P2(1)2(1)2(1), a = 63.7 A, b = 66.7 A, c = 80.5 A, with four molecules, each 9505 Mr, in the asymmetric unit. The crystals diffract X-rays to better than 2.8 A resolution. ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(84)90497-2
更新日期:1984-07-05 00:00:00
abstract::Subtilisin E is synthesized in Bacillus subtilis as a preprosubtilisin. The prepeptide is removed by a signal peptidase, and the propeptide is cleaved from the mature protein by the catalytic domain of subtilisin itself in an autocatalytic fashion. A six residue histidine-tag was attached to the C terminus of prosubti...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1996.0538
更新日期:1996-10-11 00:00:00
abstract::The solution structure of r-elafin, a specific elastase inhibitor, has been determined using NMR spectroscopy. Characterized by a flat core and a flexible N-terminal extremity, the three-dimensional structure is formed by a central twisted beta-hairpin accompanied by two external segments linked by the proteinase bind...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1997.0983
更新日期:1997-05-09 00:00:00
abstract::Monoclonal antibodies recognize antigens with high affinity and specificity, but the structural basis for molecular mimicry remains unclear. It is often assumed that cross-reactive antigens share some structural similarity that is specifically recognized by a monoclonal antibody. Recent studies using combinatorial lib...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1998.2137
更新日期:1998-11-13 00:00:00
abstract::The secondary structure of ribonuclease T1 (RNase T1) in aqueous solution and its temperature-induced structural changes have been investigated by Fourier-transform infrared (FT-IR) spectroscopy. 13 to 14% alpha-helix and 32 to 33% beta-sheet were estimated from the resolution-enhanced FT-IR spectra, in agreement with...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1993.1442
更新日期:1993-08-05 00:00:00
abstract::The Integrases of bacteriophages lambda and HK022 promote recombination between DNA molecules that carry attachment sites. The two integrases are about 70% identical in sequence and catalyze nearly identical reactions, but recognize different sets of sites. To identify the amino acids that determine this difference in...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1995.0486
更新日期:1995-09-15 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::New insights into the modular organization and flexibility of the N-terminal half of human cardiac myosin binding protein C (cMyBP-C) and information on the association state of the full-length protein have been deduced from a combined small-angle X-ray scattering (SAXS) and NMR study. SAXS data show that the first fi...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2011.10.029
更新日期:2011-12-16 00:00:00
abstract::To gain an understanding of structural changes induced in substrates by Escherichia coli ribonuclease P (RNase P), we have incorporated an interstrand disulfide crosslink proximal to the cleavage site in a model substrate. RNase P is able to process the reduced, non-crosslinked form of this substrate as well as a subs...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1999.3424
更新日期:2000-02-04 00:00:00
abstract::In human trophoblastic cells, a correlation between early endosomal trafficking of HIV-1 and virus infection was previously documented. However, if HIV-1 is massively internalized in these cells, the endocytic pathway(s) responsible for viral uptake is still undefined. Here we address this vital question. Amongst all ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2007.03.003
更新日期:2007-05-18 00:00:00
abstract::Gap junction channels are intercellular channels that form by docking the extracellular loops of connexin protein subunits. While the structure and function of gap junctions as intercellular channels have been characterized using different techniques, the physics of the inter-connexin interaction remain unknown. Moreo...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2011.07.013
更新日期:2011-09-09 00:00:00
abstract::Although chemical signaling during embryogenesis is readily addressed by a plethora of available techniques, the developmental functions of ionic signaling are still poorly understood. It is increasingly realized that bioelectric events in nonneural cells are critical for pattern regulation, but their study has been h...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2019.10.029
更新日期:2020-01-17 00:00:00
abstract::Proteins are dynamic molecular machines whose structure and function are modulated by environmental perturbations and natural selection. Allosteric regulation, discovered in 1963 as a novel molecular mechanism of enzymatic adaptation [Monod, Changeux & Jacob (1963). J. Mol. Biol.6, 306-329], seems to be the leit motiv...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2012.12.018
更新日期:2013-05-13 00:00:00
abstract::Interactions of transmembrane helices play a crucial role in the folding and oligomerisation of integral membrane proteins. In order to uncover novel sequence motifs mediating these interactions, we randomised one face of a transmembrane helix with a set of non-polar or moderately polar amino acids. Those sequences ca...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2007.09.056
更新日期:2007-11-30 00:00:00
abstract::The NtrC-family PhhR protein of Pseudomonas putida is involved in the control of the metabolism of aromatic amino acids, and it is a dual regulatory protein. When PhhR acts as an activator, it stimulates transcription from its cognate promoters with RNA polymerase/sigma(70) rather than with sigma(54), as is the case f...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2009.09.045
更新日期:2009-12-04 00:00:00
abstract::Previously we have shown that nuclear extracts from mouse cells contain a heterogeneous group of polypeptides (p65, p80, p90, p100) which form distinct DNA-protein complexes on the 18 base-pair sequence element (termed Sal-box), which constitutes the murine rDNA transcription termination signal. These distinct protein...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(92)90213-4
更新日期:1992-10-05 00:00:00
abstract::Protein folding is directed by the sequence of sidechains along the polypeptide backbone, but despite this the developement of sidechain interactions during folding is not well understood. Here, the thiol-active reagent, dithio-nitrobenzoic acid (DTNB), is used to probe the exposure of the cysteine sidechain thiols in...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2006.09.014
更新日期:2006-12-08 00:00:00
abstract::The three-dimensional structure of the outer membrane protein A from Klebsiella pneumoniae transmembrane domain was determined by NMR.This protein induces specific humoral and cytotoxic responses, and is a potent carrier protein. This is one of the largest integral membrane proteins(210 residues) for which nearly comp...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2008.10.021
更新日期:2009-01-09 00:00:00
abstract::Human papillomavirus 16 (HPV16) E6E7 pre-mRNA is bicistronic and has an intron in the E6 coding region with one 5' splice site and two alternative 3' splice sites, which produce E6(*)I and E6(*)II, respectively. If this intron remains unspliced, the resulting E6E7 mRNA expresses oncogenic E6. We found for the first ti...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2004.02.023
更新日期:2004-04-09 00:00:00
abstract::DNA opening is an essential step in the initiation of replication via the Cairns mode of replication. The opening reaction was investigated in a gamma ori system by using hyperactive variants of plasmid R6K-encoded initiator protein, pi. Reactivity to KMnO4 (indicative of opening) within gamma ori DNA occurred in both...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.2000.4426
更新日期:2001-03-09 00:00:00
abstract::We have sequenced the heavy and light chain genes from 365 IgG(+) B cells and found that 24 (6.5 %) contain somatically introduced insertions or deletions. These insertions and deletions are clustered at "hot-spots" in the antigen-binding site and frequently result in the creation of new combinations of canonical loop...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1999.3289
更新日期:1999-12-03 00:00:00
abstract::The process of deducing the catalytic mechanism of an enzyme from its structure is highly complex and requires extensive experimental work to validate a proposed mechanism. As one step towards improving the reliability of this process, we have gathered statistics describing the typical geometry of catalytic residues w...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2007.03.055
更新日期:2007-06-15 00:00:00
abstract::Expansion of the polyglutamine (polyQ) region in the protein ataxin-3 is associated with spinocerebellar ataxia type 3, an inherited neurodegenerative disorder that belongs to the family of polyQ diseases. Increasing evidence indicates that protein aggregation and fibre formation play an important role in these pathol...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2004.09.065
更新日期:2004-12-03 00:00:00
abstract::Siderophores are small-molecule iron chelators that many bacteria synthesize and secrete in order to survive in iron-depleted environments. Biosynthesis of enterobactin, the Escherichia coli catecholate siderophore, requires adenylation of 2,3-dihydroxybenzoic acid (2,3-DHB) by the cytoplasmic enzyme EntE. The DHB-AMP...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2009.08.036
更新日期:2009-10-30 00:00:00
abstract::The oxazolidinone family is a new class of synthetic antibiotics that bind to the bacterial 50S ribosomal subunit. Two members of the family, linezolid and XA043, were examined for their effects on translational fidelity using a lacZ reporter gene in vivo. Both promoted highly significant frameshifting and nonsense su...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/s0022-2836(02)00784-2
更新日期:2002-09-13 00:00:00
abstract::We have developed a formalism and a computational method for analyzing the potential functional consequences of non-synonymous single nucleotide polymorphisms. Our approach uses a structural model and phylogenetic information to derive a selection of structure and sequence-based features serving as indicators of an am...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.2001.4510
更新日期:2001-03-23 00:00:00