<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Meniche, Xavier</style></author><author><style face="normal" font="default" size="100%">Otten, Renee</style></author><author><style face="normal" font="default" size="100%">Siegrist, M Sloan</style></author><author><style face="normal" font="default" size="100%">Baer, Christina E</style></author><author><style face="normal" font="default" size="100%">Murphy, Kenan C</style></author><author><style face="normal" font="default" size="100%">Bertozzi, Carolyn R</style></author><author><style face="normal" font="default" size="100%">Sassetti, Christopher M</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Subpolar addition of new cell wall is directed by DivIVA in mycobacteria.</style></title><secondary-title><style face="normal" font="default" size="100%">Proc Natl Acad Sci U S A</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Proc. Natl. Acad. Sci. U.S.A.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Bacterial Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Cell Cycle Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Cell Membrane</style></keyword><keyword><style  face="normal" font="default" size="100%">Cell Polarity</style></keyword><keyword><style  face="normal" font="default" size="100%">Cell Wall</style></keyword><keyword><style  face="normal" font="default" size="100%">Models, Biological</style></keyword><keyword><style  face="normal" font="default" size="100%">Mycobacterium smegmatis</style></keyword><keyword><style  face="normal" font="default" size="100%">Mycolic Acids</style></keyword><keyword><style  face="normal" font="default" size="100%">Protein Binding</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2014</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2014 Aug 5</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">111</style></volume><pages><style face="normal" font="default" size="100%">E3243-51</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Mycobacteria are surrounded by a complex multilayered envelope and elongate at the poles. The principles that organize the coordinated addition of chemically diverse cell wall layers during polar extension remain unclear. We show that enzymes mediating the terminal cytosolic steps of peptidoglycan, arabinogalactan, and mycolic acid synthesis colocalize at sites of cell growth or division. The tropomyosin-like protein, DivIVA, is targeted to the negative curvature of the pole, is enriched at the growing end, and determines cell shape from this site. In contrast, cell wall synthetic complexes are concentrated at a distinct subpolar location. When viewed at subdiffraction resolution, new peptidoglycan is deposited at this subpolar site, and inert cell wall covers the DivIVA-marked tip. The differentiation between polar tip and cell wall synthetic complexes is also apparent at the biochemical level. Enzymes that generate mycolate precursors interact with DivIVA, but the final condensation of mycolic acids occurs in a distinct protein complex at the site of nascent cell wall addition. We propose an ultrastructural model of mycobacterial polar growth where new cell wall is added in an annular zone below the cell tip. This model may be broadly applicable to other bacterial and fungal organisms that grow via polar extension.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">31</style></issue><custom1><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/25049412?dopt=Abstract</style></custom1></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Brendel, V</style></author><author><style face="normal" font="default" size="100%">Brocchieri, L</style></author><author><style face="normal" font="default" size="100%">Sandler, S J</style></author><author><style face="normal" font="default" size="100%">Clark, A J</style></author><author><style face="normal" font="default" size="100%">Karlin, S</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Evolutionary comparisons of RecA-like proteins across all major kingdoms of living organisms.</style></title><secondary-title><style face="normal" font="default" size="100%">J Mol Evol</style></secondary-title><alt-title><style face="normal" font="default" size="100%">J. Mol. Evol.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Amino Acid Sequence</style></keyword><keyword><style  face="normal" font="default" size="100%">Animals</style></keyword><keyword><style  face="normal" font="default" size="100%">Archaeal Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Bacteria</style></keyword><keyword><style  face="normal" font="default" size="100%">Bacterial Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Cell Cycle Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Consensus Sequence</style></keyword><keyword><style  face="normal" font="default" size="100%">Conserved Sequence</style></keyword><keyword><style  face="normal" font="default" size="100%">DNA-Binding Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Escherichia coli Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Evolution, Molecular</style></keyword><keyword><style  face="normal" font="default" size="100%">Humans</style></keyword><keyword><style  face="normal" font="default" size="100%">Molecular Sequence Data</style></keyword><keyword><style  face="normal" font="default" size="100%">Phylogeny</style></keyword><keyword><style  face="normal" font="default" size="100%">Rad51 Recombinase</style></keyword><keyword><style  face="normal" font="default" size="100%">Rec A Recombinases</style></keyword><keyword><style  face="normal" font="default" size="100%">Sequence Alignment</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1997</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1997 May</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">44</style></volume><pages><style face="normal" font="default" size="100%">528-41</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Protein sequences with similarities to Escherichia coli RecA were compared across the major kingdoms of eubacteria, archaebacteria, and eukaryotes. The archaeal sequences branch monophyletically and are most closely related to the eukaryotic paralogous Rad51 and Dmc1 groups. A multiple alignment of the sequences suggests a modular structure of RecA-like proteins consisting of distinct segments, some of which are conserved only within subgroups of sequences. The eukaryotic and archaeal sequences share an N-terminal domain which may play a role in interactions with other factors and nucleic acids. Several positions in the alignment blocks are highly conserved within the eubacteria as one group and within the eukaryotes and archaebacteria as a second group, but compared between the groups these positions display nonconservative amino acid substitutions. Conservation within the RecA-like core domain identifies possible key residues involved in ATP-induced conformational changes. We propose that RecA-like proteins derive evolutionarily from an assortment of independent domains and that the functional homologs of RecA in noneubacteria comprise an array of RecA-like proteins acting in series or cooperatively.</style></abstract><issue><style face="normal" font="default" size="100%">5</style></issue><custom1><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/9115177?dopt=Abstract</style></custom1></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Dangoria, N S</style></author><author><style face="normal" font="default" size="100%">Breau, W C</style></author><author><style face="normal" font="default" size="100%">Anderson, H A</style></author><author><style face="normal" font="default" size="100%">Cishek, D M</style></author><author><style face="normal" font="default" size="100%">Norkin, L C</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Extracellular simian virus 40 induces an ERK/MAP kinase-independent signalling pathway that activates primary response genes and promotes virus entry.</style></title><secondary-title><style face="normal" font="default" size="100%">J Gen Virol</style></secondary-title><alt-title><style face="normal" font="default" size="100%">J. Gen. Virol.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Animals</style></keyword><keyword><style  face="normal" font="default" size="100%">Calcium</style></keyword><keyword><style  face="normal" font="default" size="100%">Calcium-Calmodulin-Dependent Protein Kinases</style></keyword><keyword><style  face="normal" font="default" size="100%">Cell Cycle Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Cell Line</style></keyword><keyword><style  face="normal" font="default" size="100%">Cercopithecus aethiops</style></keyword><keyword><style  face="normal" font="default" size="100%">Dual Specificity Phosphatase 1</style></keyword><keyword><style  face="normal" font="default" size="100%">Enzyme Inhibitors</style></keyword><keyword><style  face="normal" font="default" size="100%">Gene Expression Regulation, Viral</style></keyword><keyword><style  face="normal" font="default" size="100%">Genistein</style></keyword><keyword><style  face="normal" font="default" size="100%">Humans</style></keyword><keyword><style  face="normal" font="default" size="100%">Immediate-Early Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Isoflavones</style></keyword><keyword><style  face="normal" font="default" size="100%">Mitogen-Activated Protein Kinase 3</style></keyword><keyword><style  face="normal" font="default" size="100%">Mitogen-Activated Protein Kinases</style></keyword><keyword><style  face="normal" font="default" size="100%">Naphthalenes</style></keyword><keyword><style  face="normal" font="default" size="100%">Phosphoprotein Phosphatases</style></keyword><keyword><style  face="normal" font="default" size="100%">Platelet-Derived Growth Factor</style></keyword><keyword><style  face="normal" font="default" size="100%">Protein Kinase C</style></keyword><keyword><style  face="normal" font="default" size="100%">Protein Phosphatase 1</style></keyword><keyword><style  face="normal" font="default" size="100%">Protein Tyrosine Phosphatases</style></keyword><keyword><style  face="normal" font="default" size="100%">Protein-Serine-Threonine Kinases</style></keyword><keyword><style  face="normal" font="default" size="100%">Proto-Oncogene Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Proto-Oncogene Proteins c-jun</style></keyword><keyword><style  face="normal" font="default" size="100%">Proto-Oncogene Proteins c-myc</style></keyword><keyword><style  face="normal" font="default" size="100%">Proto-Oncogene Proteins c-raf</style></keyword><keyword><style  face="normal" font="default" size="100%">Proto-Oncogene Proteins c-sis</style></keyword><keyword><style  face="normal" font="default" size="100%">Signal Transduction</style></keyword><keyword><style  face="normal" font="default" size="100%">Simian virus 40</style></keyword><keyword><style  face="normal" font="default" size="100%">Up-Regulation</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1996</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1996 Sep</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">77 ( Pt 9)</style></volume><pages><style face="normal" font="default" size="100%">2173-82</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Simian virus 40 (SV40) binding to growth-arrested cells activated an intracellular signalling pathway that induced the up-regulation of the primary response genes c-myc, c-jun and c-sis within 30 min and of JE within 90 min. The up-regulation of the primary response genes occurred in the presence of cycloheximide and when UV-inactivated SV40 was adsorbed to cells. SV40 binding did not activate Raf or mitogen-activated protein kinase (MAP/ERK1), or mobilize intracellular Ca2+. The SV40-induced up-regulation of c-myc and c-jun was blocked by the tyrosine kinase inhibitor, genistein, and by the protein kinase C (PKC) inhibitor, calphostin C, but not by expression of the MAP kinase-specific phosphatase, MKP-1. These results suggest that the SV40-induced signalling pathway includes the activities of a tyrosine kinase and a Ca(2+)-independent isoform of PKC, but not of Raf or MAP kinase. Finally, SV40 infectious entry into cells was specifically and reversibly blocked by genistein.</style></abstract><custom1><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/8811017?dopt=Abstract</style></custom1></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Sandler, S J</style></author><author><style face="normal" font="default" size="100%">Satin, L H</style></author><author><style face="normal" font="default" size="100%">Samra, H S</style></author><author><style face="normal" font="default" size="100%">Clark, A J</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">recA-like genes from three archaean species with putative protein products similar to Rad51 and Dmc1 proteins of the yeast Saccharomyces cerevisiae.</style></title><secondary-title><style face="normal" font="default" size="100%">Nucleic Acids Res</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Nucleic Acids Res.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Amino Acid Sequence</style></keyword><keyword><style  face="normal" font="default" size="100%">Archaea</style></keyword><keyword><style  face="normal" font="default" size="100%">Base Sequence</style></keyword><keyword><style  face="normal" font="default" size="100%">Cell Cycle Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">DNA-Binding Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Escherichia coli</style></keyword><keyword><style  face="normal" font="default" size="100%">Halobacteriaceae</style></keyword><keyword><style  face="normal" font="default" size="100%">Methanococcus</style></keyword><keyword><style  face="normal" font="default" size="100%">Models, Molecular</style></keyword><keyword><style  face="normal" font="default" size="100%">Molecular Sequence Data</style></keyword><keyword><style  face="normal" font="default" size="100%">Phylogeny</style></keyword><keyword><style  face="normal" font="default" size="100%">Rad51 Recombinase</style></keyword><keyword><style  face="normal" font="default" size="100%">Rec A Recombinases</style></keyword><keyword><style  face="normal" font="default" size="100%">Saccharomyces cerevisiae</style></keyword><keyword><style  face="normal" font="default" size="100%">Saccharomyces cerevisiae Proteins</style></keyword><keyword><style  face="normal" font="default" size="100%">Sequence Alignment</style></keyword><keyword><style  face="normal" font="default" size="100%">Sulfolobus</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1996</style></year><pub-dates><date><style  face="normal" font="default" size="100%">1996 Jun 1</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">24</style></volume><pages><style face="normal" font="default" size="100%">2125-32</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The process of homologous recombination has been documented in bacterial and eucaryotic organisms. The Escherichia coli RecA and Saccharomyces cerevisiae Rad51 proteins are the archetypal members of two related families of proteins that play a central role in this process. Using the PCR process primed by degenerate oligonucleotides designed to encode regions of the proteins showing the greatest degree of identity, we examined DNA from three organisms of a third phylogenetically divergent group, Archaea, for sequences encoding proteins similar to RecA and Rad51. The archaeans examined were a hyperthermophilic acidophile, Sulfolobus sofataricus (Sso); a halophile, Haloferax volcanii (Hvo); and a hyperthermophilic piezophilic methanogen, Methanococcus jannaschii (Mja). The PCR generated DNA was used to clone a larger genomic DNA fragment containing an open reading frame (orf), that we refer to as the radA gene, for each of the three archaeans. As shown by amino acid sequence alignments, percent amino acid identities and phylogenetic analysis, the putative proteins encoded by all three are related to each other and to both the RecA and Rad51 families of proteins. The putative RadA proteins are more similar to the Rad51 family (approximately 40% identity at the amino acid level) than to the RecA family (approximately 20%). Conserved sequence motifs, putative tertiary structures and phylogenetic analysis implied by the alignment are discussed. The 5' ends of mRNA transcripts to the Sso radA were mapped. The levels of radA mRNA do not increase after treatment with UV irradiation as do recA and RAD51 transcripts in E.coli and S.cerevisiae. Hence it is likely that radA in this organism is a constitutively expressed gene and we discuss possible implications of the lack of UV-inducibility.</style></abstract><issue><style face="normal" font="default" size="100%">11</style></issue><custom1><style face="normal" font="default" size="100%">http://www.ncbi.nlm.nih.gov/pubmed/8668545?dopt=Abstract</style></custom1></record></records></xml>