Detection of transmembrane linkages between immunoglobulin or complement receptors and the neutrophil's cortical microfilaments by resonance energy transfer microscopy.

abstract：:Current data suggest that globular domains may form amyloids via different mechanisms. Nevertheless, there are indications that the initiation of the process takes place invariably in the less stable segments of a protein domain. We have studied the sequence and structural conservation of beta(2)-microglobulin that de...

journal_title：Journal of molecular biology

authors： Benyamini H,Gunasekaran K,Wolfson H,Nussinov R

更新日期：2003-06-27 00:00:00

abstract：:The DnaB protein is the primary replicative helicase in Escherichia coli, and the active form of the protein is a hexamer. It has been reported that the protein forms a ring with strong 3-fold symmetry, which was suggested to be a trimer of dimers. We show that under different conditions, using either ATP, ATP gamma S...

journal_title：Journal of molecular biology

authors： Yu X,Jezewska MJ,Bujalowski W,Egelman EH

更新日期：1996-05-31 00:00:00

abstract：:We use a synthetic "primed bubble-duplex" model elongation complex developed previously to examine certain structural and thermodynamic features of the transcription elongation complex of Escherichia coli. The nucleic acid framework of this model complex consists of a linear base-paired DNA molecule with a central "bu...

journal_title：Journal of molecular biology

authors： Wilson KS,Conant CR,von Hippel PH

更新日期：1999-06-25 00:00:00

abstract：:Kringle 4 is an autonomous structural and folding domain within the proenzyme plasminogen. Homologous domains are found throughout the blood clotting and fibrinolytic proteins. In this paper, we present the almost complete assignment of the 1H nuclear magnetic resonance (n.m.r.) spectrum of the kringle 4 domain of hum...

journal_title：Journal of molecular biology

authors： Atkinson RA,Williams RJ

更新日期：1990-04-05 00:00:00

abstract：:The 68C locus of the Drosophila melanogaster polytene chromosomes contains the structural genes for three glue polypeptides (sgs-3, sgs-7 and sgs-8) synthesized in the larval salivary glands during the third larval instar. When the messenger RNAs for the glue polypeptides are being synthesized, the locus is puffed; th...

journal_title：Journal of molecular biology

authors： Garfinkel MD,Pruitt RE,Meyerowitz EM

更新日期：1983-08-25 00:00:00

abstract：:The conversion of specific proteins or protein fragments into insoluble, ordered fibrillar aggregates is a fundamental process in protein chemistry, biology, medicine and biotechnology. As this structural conversion seems to be a property shared by many proteins, understanding the mechanism of this process will be of ...

journal_title：Journal of molecular biology

authors： Campioni S,Mossuto MF,Torrassa S,Calloni G,de Laureto PP,Relini A,Fontana A,Chiti F

更新日期：2008-06-06 00:00:00

abstract：:Four previously isolated mutations in Salmonella phage P22 tailspike protein were used to study the relationship between protein stability, folding, and function. Tailspike protein binds and hydrolyzes the repetitive O-antigen structure in Salmonella lipopolysaccharide. Four mutations (V331G, V331A, A334V, A334I) are ...

journal_title：Journal of molecular biology

authors： Baxa U,Steinbacher S,Weintraub A,Huber R,Seckler R

更新日期：1999-10-29 00:00:00

abstract：:Understanding gene regulation and its adaptive significance requires not only a detailed knowledge of individual molecular interactions that give rise to changes in gene expression but also an overview of complete genetic networks and the ways in which components within them interact. Increasingly, such studies are be...

journal_title：Journal of molecular biology

authors： Burton NA,Johnson MD,Antczak P,Robinson A,Lund PA

更新日期：2010-09-03 00:00:00

abstract：:A new two-dimensional crystal form of yeast RNA polymerase II was obtained in which the conformation of the enzyme appears "open", allowing entry of DNA, as required for the initiation of transcription. By contrast, a previous crystal form contained the enzyme in a "closed" conformation, appropriate for retention of D...

journal_title：Journal of molecular biology

authors： Asturias FJ,Meredith GD,Poglitsch CL,Kornberg RD

更新日期：1997-10-03 00:00:00

abstract：:The Escherichia coli trigger factor is a peptidyl-prolyl cis/trans isomerase (PPIase) which catalyzes proline-limited protein folding extremely well. It has been found associated with nascent protein chains as well as with the chaperone GroEL. The trigger factor utilizes protein regions outside the central catalytic d...

journal_title：Journal of molecular biology

authors： Zarnt T,Tradler T,Stoller G,Scholz C,Schmid FX,Fischer G

更新日期：1997-09-05 00:00:00

abstract：:Pertussis toxin is a major virulence factor of Bordetella pertussis, the causative agent of whooping cough. The protein is a hexamer containing a catalytic subunit (S1) that is tightly associated with a pentameric cell-binding component (B-oligomer). In vitro experiments have shown that ATP and a number of detergents ...

journal_title：Journal of molecular biology

authors： Hazes B,Boodhoo A,Cockle SA,Read RJ

更新日期：1996-05-17 00:00:00

abstract：:We have investigated the translational and rotational diffusion of two proteins, bovine pancreatic trypsin inhibitor and hen egg white lysozyme, using molecular dynamics simulations in explicit solvent. The translational diffusion constants obtained from the simulations compare favourably with results from experiments...

journal_title：Journal of molecular biology

authors： Smith PE,van Gunsteren WF

更新日期：1994-02-18 00:00:00

abstract：:To investigate the relationships between protein topology, amino acid sequence and folding mechanisms, the folding transition state of the Sso7d protein has been characterised both experimentally and theoretically. Although Sso7d protein has a similar topology to that of the SH3 domains, the structure of its transitio...

journal_title：Journal of molecular biology

authors： Guerois R,Serrano L

更新日期：2000-12-15 00:00:00

abstract：:Ubiquitination is one of the most prevalent posttranslational modifications in eukaryotic cells, with functional importance in protein degradation, subcellular localization and signal transduction pathways. Immunoaffinity enrichment coupled with quantitative mass spectrometry enables the in-depth characterization of p...

journal_title：Journal of molecular biology

authors： Yu K,Phu L,Varfolomeev E,Bustos D,Vucic D,Kirkpatrick DS

更新日期：2015-06-05 00:00:00

abstract：:We demonstrate that RecA protein-coated, short single-stranded DNA probes paired with a specific homologous DNA sequence in a linear duplex target molecule and accurately targeted the selected DNA sequence. RecA protein-coated complementary ssDNA probes were reacted with linear duplexes, and the homologously paired mo...

journal_title：Journal of molecular biology

authors： Révet BM,Sena EP,Zarling DA

更新日期：1993-08-05 00:00:00

abstract：:The MotA protein of Escherichia coli is a component of the flagellum that functions, together with MotB, in transmembrane proton conduction. MotA and MotB are believed to form the stator of the flagellar motor. They are integral membrane proteins; MotA has a large (ca 22 kDa) domain in the cytoplasm, and MotB a much s...

journal_title：Journal of molecular biology

authors： Zhou J,Blair DF

更新日期：1997-10-24 00:00:00

abstract：:U-insertion/deletion RNA editing in the single mitochondrion of kinetoplastids, an ancient lineage of eukaryotes, is a unique mRNA maturation process needed for translation. Multisubunit editing complexes recognize many pre-edited mRNA sites and modify them via cycles of three catalytic steps: guide RNA (gRNA)-directe...

journal_title：Journal of molecular biology

authors： Hernandez A,Panigrahi A,Cifuentes-Rojas C,Sacharidou A,Stuart K,Cruz-Reyes J

更新日期：2008-08-01 00:00:00

abstract：:Type IV pili are bacterial extracellular filaments that can be retracted to create force and motility. Retraction is accomplished by the motor protein PilT. Crystal structures of Pseudomonas aeruginosa PilT with and without bound beta,gamma-methyleneadenosine-5'-triphosphate have been solved at 2.6 A and 3.1 A resolut...

journal_title：Journal of molecular biology

authors： Misic AM,Satyshur KA,Forest KT

更新日期：2010-07-30 00:00:00

abstract：:p38α mitogen-activated protein kinase (MAPK) is generally activated by dual phosphorylation but has also been shown to exhibit alternative activation modes. One of these modes included a direct interaction with phosphatidylinositol ether lipid analogues (PIA) inducing p38α autoactivation and apoptosis. Perifosine, an ...

journal_title：Journal of molecular biology

authors： Tzarum N,Eisenberg-Domovich Y,Gills JJ,Dennis PA,Livnah O

更新日期：2012-12-14 00:00:00

abstract：:Apolipoprotein A-I (ApoA-I) is a protein implicated in the solubilization of lipids and cholesterol from cellular membranes. The study of ApoA-I in phospholipid (PL) monolayers brings relevant information about ApoA-I/PL interactions. We investigated the influence of PL charge and acyl chain organization on the intera...

journal_title：Journal of molecular biology

authors： Chièze L,Bolanos-Garcia VM,Pinot M,Desbat B,Renault A,Beaufils S,Vié V

更新日期：2011-07-01 00:00:00

abstract：:The sigma N class of sigma factors confer upon RNA polymerase the requirement for enhancer-binding activator proteins. The sigma-N (sigma N) protein of Klebsiella pneumoniae was analysed by the assay of purified peptides comprising domains or regions of sigma N defined by proteolysis or by homology alignment, respecti...

journal_title：Journal of molecular biology

authors： Cannon W,Missailidis S,Smith C,Cottier A,Austin S,Moore M,Buck M

更新日期：1995-05-12 00:00:00

abstract：:Nudaurelia capensis omega virus is a T=4, icosahedral virus with a bipartite, positive-sense RNA genome. Expression of the coat protein gene in a baculovirus system was previously shown to result in the formation of procapsids when purified at pH 7.6. Procapsids are round, porous particles (480 A diameter) and have T=...

journal_title：Journal of molecular biology

authors： Tang J,Lee KK,Bothner B,Baker TS,Yeager M,Johnson JE

更新日期：2009-09-25 00:00:00

abstract：:We describe a hybrid statistical mechanical and dynamical approach for modelling the formation of closed, open and elongating complexes of RNA polymerase, the interactions of these polymerases to produce transcriptional interference, and the regulation of these processes by a DNA-binding and DNA-looping regulatory pro...

journal_title：Journal of molecular biology

authors： Dodd IB,Shearwin KE,Sneppen K

更新日期：2007-06-22 00:00:00

abstract：:No drug has been targeted specifically for HIV-2 (human immunodeficiency virus type 2) infection despite its increasing prevalence worldwide. The antiviral HIV-1 (human immunodeficiency virus type 1) protease (PR) inhibitor darunavir and the chemically related GRL98065 and GRL06579A were designed with the same chemica...

journal_title：Journal of molecular biology

authors： Kovalevsky AY,Louis JM,Aniana A,Ghosh AK,Weber IT

更新日期：2008-12-05 00:00:00

abstract：:DNA structures bound to transcription factors are studied by using the crystal coordinates of complexes. Structural characteristics which are found at the sites where a protein secondary structure, an alpha-helix or a beta-sheet binds, can be understood in terms of fitting of the concave surface of the DNA major groov...

journal_title：Journal of molecular biology

authors： Suzuki M,Yagi N

更新日期：1996-02-09 00:00:00

abstract：:Experiments on the AraC regulatory protein of Escherichia coli suggest a mechanism that DNA-binding proteins can use to reduce potentially drastic alterations in their affinity for DNA resulting from changes in salt concentration. Measurement of the net number of ions apparently displaced as AraC protein binds DNA and...

journal_title：Journal of molecular biology

authors： Martin KJ,Schleif RF

更新日期：1987-06-05 00:00:00

abstract：:Contact-dependent growth inhibition (CDI) is a widespread mechanism of inter-bacterial competition mediated by the CdiB/CdiA family of two-partner secretion proteins. CdiA effectors carry diverse C-terminal toxin domains (CdiA-CT), which are delivered into neighboring target cells to inhibit growth. CDI(+) bacteria al...

journal_title：Journal of molecular biology

authors： Morse RP,Willett JL,Johnson PM,Zheng J,Credali A,Iniguez A,Nowick JS,Hayes CS,Goulding CW

更新日期：2015-11-20 00:00:00

abstract：:XPB is a superfamily 2 helicase with a 3'-5' polarity. In eukaryotes, XPB is an integral subunit of the transcription factor TFIIH, which plays a dual role in DNA opening at RNA polymerase II promoters and in establishing the repair bubble around a DNA lesion in nucleotide excision repair. Eukaryotic XPB has only very...

journal_title：Journal of molecular biology

authors： Richards JD,Cubeddu L,Roberts J,Liu H,White MF

更新日期：2008-02-22 00:00:00

abstract：:The major anaerobically induced outer membrane protein (AniA) from pathogenic Neisseria gonorrhoeae is essential for cell growth under oxygen limiting conditions in the presence of nitrite and is protective against killing by human sera. A phylogenic analysis indicates that AniA is a member of a new class of copper-co...

journal_title：Journal of molecular biology

authors： Boulanger MJ,Murphy ME

更新日期：2002-02-01 00:00:00

abstract：:We have examined the chromatin organization of a cluster of transfer RNA genes at the cytogenic locus 90BC on the right arm of the third Drosophila melanogaster chromosome. We find that the internal promoter sequences are preferentially exposed to micrococcal nuclease and DNase I in chromatin. Moreover, these exposed ...

journal_title：Journal of molecular biology

authors： DeLotto R,Schedl P

更新日期：1984-11-15 00:00:00