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 previous models and are tolerated in part by a regulatory response to DNA damage.
journal_name
J Mol Bioljournal_title
Journal of molecular biologyauthors
Baek K,Svenningsen S,Eisen H,Sneppen K,Brown Sdoi
10.1016/j.jmb.2003.09.037keywords:
subject
Has Abstractpub_date
2003-11-28 00:00:00pages
363-72issue
3eissn
0022-2836issn
1089-8638pii
S0022283603011859journal_volume
334pub_type
杂志文章abstract::Complexes of the type II restriction endonuclease EcoRV with a variety of short, selfcomplementary deoxyoligonucleotides have been crystallized. The best crystals diffract to about 2.7 A resolution and consist of 1:1 complexes between endonuclease dimers and duplexes of the cognate decamer GGGATATCCC containing the he...
journal_title:Journal of molecular biology
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doi:10.1016/0022-2836(91)90536-f
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abstract::The type A domain of the von Willebrand Factor is found also in the complement proteins factor B (FB), C2, CR3 and CR4, the integrins, collagen types VI, VII, XII and XIV, and other proteins. FB is a component of the alternative pathway of the complement system of immune defence, and is cleaved into the fragments Bb a...
journal_title:Journal of molecular biology
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doi:10.1006/jmbi.1994.1271
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abstract::CloQ is an aromatic prenyltransferase from the clorobiocin biosynthetic pathway of Streptomyces roseochromogenes var. oscitans. It is involved in the synthesis of the prenylated hydroxybenzoate moiety of the antibiotic, specifically catalyzing the attachment of a dimethylallyl moiety to 4-hydroxyphenylpyruvate. Herein...
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journal_title:Journal of molecular biology
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abstract::The initiator of coliphage lambda DNA replication, lambda O protein, may be detected among other 35S-labeled phage and bacterial proteins by a method based on immunoprecipitation. This method makes it possible to study lambda O proteolytic degradation in lambda plasmid-harboring or lambda phage-infected cells; it avoi...
journal_title:Journal of molecular biology
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doi:10.1016/0022-2836(92)90624-s
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abstract::Actin polymerization plays a major role in cell movement. The controls of actin sequestration/desequestration and of filament turnover are two important features of cell motility. Actin binding proteins use properties derived from the steady-state monomer-polymer cycle of actin in the presence of ATP, to control the F...
journal_title:Journal of molecular biology
pub_type: 杂志文章,评审
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abstract::We present a study of the interaction between thioredoxin and the model enzyme pI258 arsenate reductase (ArsC) from Staphylococcus aureus. ArsC catalyses the reduction of arsenate to arsenite. Three redox active cysteine residues (Cys10, Cys82 and Cys89) are involved. After a single catalytic arsenate reduction event,...
journal_title:Journal of molecular biology
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abstract::Residue Glu152 of tyrosyl-tRNA synthetase (TyrTS) from Bacillus stearothermophilus is close to phosphate groups 73 and 74 of tRNATyr in the structural model of their complex. TyrTS(E152A), a mutant synthetase carrying the change of Glu152 to Ala, was toxic when overproduced in Escherichia coli. The toxicity strongly i...
journal_title:Journal of molecular biology
pub_type: 杂志文章
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journal_title:Journal of molecular biology
pub_type: 杂志文章
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abstract::The hydrolytic endoribonuclease RNase E, which is widely distributed in bacteria and plants, plays key roles in mRNA degradation and RNA processing in Escherichia coli. The enzymatic activity of RNase E is contained within the conserved amino-terminal half of the 118 kDa protein, and the carboxy-terminal half organize...
journal_title:Journal of molecular biology
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abstract::Mycobacterium tuberculosis, the causative agent of tuberculosis, is known to secrete a number of highly immunogenic proteins that are thought to confer pathogenicity, in part, by mediating binding to host tissues. Among these secreted proteins are the trimeric antigen 85 (Ag85) complex and the related MPT51 protein, a...
journal_title:Journal of molecular biology
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abstract::The thermosome from Thermoplasma acidophilum is a type II chaperonin composed of eight alpha and eight beta subunits. The genes encoding the two types of subunit were co-expressed in Escherichia coli and the alpha8/beta8 complex purified from the cell extract. The isolated complex showed steady-state ATPase properties...
journal_title:Journal of molecular biology
pub_type: 杂志文章
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更新日期:2005-04-22 00:00:00
abstract::RNA polymerase II (Pol II) and its general transcription factors assemble on the promoters of mRNA genes to form large macromolecular complexes that initiate transcription in a regulated manner. During early transcription, these complexes undergo dynamic rearrangement and disassembly as Pol II moves away from the star...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2020.05.005
更新日期:2020-06-26 00:00:00
abstract::The three-dimensional structures of engineered variants of Bacillus lentus subtilisin having increased enzymatic activity, K27R/N87S/V104Y/N123S/T274A (RSYSA) and N76D/N87S/S103A/V104I (DSAI), were determined by X-ray crystallography. In addition to identifying changes in atomic position we report a method that identi...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1006/jmbi.1999.3033
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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
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abstract::The FLP recombinase of the 2 mu plasmid of Saccharomyces cerevisiae binds to a target containing three 13 base-pair symmetry elements called a, b and c. The symmetry elements b and c are in direct orientation while the a element is in inverted orientation with respect to b and c on the opposite side of an eight base-p...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/s0022-2836(05)80320-1
更新日期:1990-11-20 00:00:00
abstract::A phylogenetically conserved ribosomal protein L16p/L10e organizes the architecture of the aminoacyl tRNA binding site on the large ribosomal subunit. Eukaryotic L10 also exhibits a variety of cellular activities, and, in particular, human L10 is known as a putative tumor suppressor, QM. We have determined the 2.5-A c...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2008.01.003
更新日期:2008-03-21 00:00:00
abstract::In vitro packaging of bacteriophage SPP1 DNA into procapsids is described and the requirements of this process were determined. Combination of proheads with an extract supplying terminase, DNA and phage tails yielded up to 10(7 )viable phages per milliliter of in vitro reaction under optimized conditions. The presence...
journal_title:Journal of molecular biology
pub_type: 杂志文章
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abstract::The "International Symposium on Nucleotide Second Messenger Signaling in Bacteria" (September 30-October 3, 2018, Berlin), which was organized within the framework of DFG Priority Programme 1879 (www.spp1879.de), brought together 125 participants from 20 countries to discuss recent progress and future trends in this f...
journal_title:Journal of molecular biology
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abstract::Binary complexes between messenger RNA and E. coli ribosomes were examined. A ribosome-mRNA binary complex on T4 gene 32 mRNA withstood inhibition by antibodies against ribosomal protein S1. Anti-S1 blocks ternary complex formation, as measured by "extension inhibition" or "toeprinting" analysis, only when preincubate...
journal_title:Journal of molecular biology
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abstract::The positive screening procedure previously described was used in order to select, clone and characterize mutants defective in negative feedback control by UTP of the yeast carbamoylphosphate synthetase-aspartate transcarbamylase protein (CPSase-ATCase). The selection procedure was improved by adding a general mapping...
journal_title:Journal of molecular biology
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abstract::The F plasmid in Escherichia coli has its own partition mechanism controlled by the sopA and sopB genes, and by the cis-acting sopC region. The DNA sequence of the entire partition region and its flanking regions is described here. Two large open reading frames coding for 43,700 Mr and 35,400 Mr proteins correspond to...
journal_title:Journal of molecular biology
pub_type: 杂志文章
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abstract::The catabolic ornithine carbamoyltransferase (EC 2.1.3.3) from Pseudomonas aeruginosa, that shows allosteric behaviour, and a mutant version of this enzyme has been crystallized in several different crystal forms. All of these have been characterized by X-ray diffraction methods. A 4.5 A resolution data set has been c...
journal_title:Journal of molecular biology
pub_type: 杂志文章
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更新日期:1991-07-05 00:00:00
abstract::Drosophila development is regulated by two hormones, 20-hydroxyecdysone (ecdysone) and juvenile hormone. We previously found that expression of the E75 gene is induced by both hormones in cultured S2 cells. E75 occupies over 100 kb of genomic DNA; it has four alternative promoters producing isoforms E75A, E75B, E75C, ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2009.02.013
更新日期:2009-04-10 00:00:00
abstract::Eukaryotic aminoacyl-tRNA synthetases are usually organized into high-molecular-weight complexes, the structure and function of which are poorly understood. We have previously described a yeast complex containing two aminoacyl-tRNA synthetases, methionyl-tRNA synthetase and glutamyl-tRNA synthetase, and one noncatalyt...
journal_title:Journal of molecular biology
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journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/0022-2836(87)90380-9
更新日期:1987-03-20 00:00:00
abstract::Staphylococcus aureus is the major cause of nosocomial infections world-wide, with increasing prevalence of community-acquired diseases. The recent dramatic increase in multi-antibiotic resistance, including resistance to the last-resort drug, vancomycin, together with the lack of an effective vaccine highlight the ne...
journal_title:Journal of molecular biology
pub_type: 杂志文章
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abstract::Here, we have investigated the specificity of purified recombinant tRNA:m(2)(2)G10 methyltransferase of Pyrococcus abyssi ((Pab)Trm-m(2)(2)G10 enzyme). This archaeal enzyme catalyses mono- and dimethylation of the N(2)-exocyclic amino group of guanine at position 10 of several tRNA species. Our results indicate that o...
journal_title:Journal of molecular biology
pub_type: 杂志文章
doi:10.1016/j.jmb.2005.12.087
更新日期:2006-03-24 00:00:00
abstract::Protein interactions play a crucial role among the different functions of a cell and are central to our understanding of cellular processes both in health and disease. Here we present Galaxy InteractoMIX (http://galaxy.interactomix.com), a platform composed of 13 different computational tools each addressing specific ...
journal_title:Journal of molecular biology
pub_type: 杂志文章
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更新日期:2020-09-23 00:00:00