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  • 1
    Publication Date: 2001-07-28
    Description: The scarcity of usable nitrogen frequently limits plant growth. A tight metabolic association with rhizobial bacteria allows legumes to obtain nitrogen compounds by bacterial reduction of dinitrogen (N2) to ammonium (NH4+). We present here the annotated DNA sequence of the alpha-proteobacterium Sinorhizobium meliloti, the symbiont of alfalfa. The tripartite 6.7-megabase (Mb) genome comprises a 3.65-Mb chromosome, and 1.35-Mb pSymA and 1.68-Mb pSymB megaplasmids. Genome sequence analysis indicates that all three elements contribute, in varying degrees, to symbiosis and reveals how this genome may have emerged during evolution. The genome sequence will be useful in understanding the dynamics of interkingdom associations and of life in soil environments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Galibert, F -- Finan, T M -- Long, S R -- Puhler, A -- Abola, P -- Ampe, F -- Barloy-Hubler, F -- Barnett, M J -- Becker, A -- Boistard, P -- Bothe, G -- Boutry, M -- Bowser, L -- Buhrmester, J -- Cadieu, E -- Capela, D -- Chain, P -- Cowie, A -- Davis, R W -- Dreano, S -- Federspiel, N A -- Fisher, R F -- Gloux, S -- Godrie, T -- Goffeau, A -- Golding, B -- Gouzy, J -- Gurjal, M -- Hernandez-Lucas, I -- Hong, A -- Huizar, L -- Hyman, R W -- Jones, T -- Kahn, D -- Kahn, M L -- Kalman, S -- Keating, D H -- Kiss, E -- Komp, C -- Lelaure, V -- Masuy, D -- Palm, C -- Peck, M C -- Pohl, T M -- Portetelle, D -- Purnelle, B -- Ramsperger, U -- Surzycki, R -- Thebault, P -- Vandenbol, M -- Vorholter, F J -- Weidner, S -- Wells, D H -- Wong, K -- Yeh, K C -- Batut, J -- GM30962/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Jul 27;293(5530):668-72.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉UMR6061-CNRS, Laboratoire de Genetique et Developpement, Faculte de Medecine, 2 avenue du Pr. Leon Bernard, F-35043 Rennes cedex, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11474104" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Adhesion ; Bacterial Proteins/genetics ; Carrier Proteins/genetics ; Chromosomes, Bacterial/genetics ; Computational Biology ; DNA Transposable Elements ; Energy Metabolism/genetics ; Evolution, Molecular ; Gene Duplication ; Genes, Bacterial ; Genes, Essential ; Genes, Regulator ; *Genome, Bacterial ; Medicago sativa/microbiology ; Nitrogen/metabolism ; Nitrogen Fixation/genetics ; Plasmids ; Polysaccharides, Bacterial/genetics ; Replicon ; Rhizobiaceae/genetics ; *Sequence Analysis, DNA ; Sinorhizobium meliloti/*genetics/physiology ; Symbiosis/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2005-07-16
    Description: Leishmania species cause a spectrum of human diseases in tropical and subtropical regions of the world. We have sequenced the 36 chromosomes of the 32.8-megabase haploid genome of Leishmania major (Friedlin strain) and predict 911 RNA genes, 39 pseudogenes, and 8272 protein-coding genes, of which 36% can be ascribed a putative function. These include genes involved in host-pathogen interactions, such as proteolytic enzymes, and extensive machinery for synthesis of complex surface glycoconjugates. The organization of protein-coding genes into long, strand-specific, polycistronic clusters and lack of general transcription factors in the L. major, Trypanosoma brucei, and Trypanosoma cruzi (Tritryp) genomes suggest that the mechanisms regulating RNA polymerase II-directed transcription are distinct from those operating in other eukaryotes, although the trypanosomatids appear capable of chromatin remodeling. Abundant RNA-binding proteins are encoded in the Tritryp genomes, consistent with active posttranscriptional regulation of gene expression.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1470643/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1470643/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ivens, Alasdair C -- Peacock, Christopher S -- Worthey, Elizabeth A -- Murphy, Lee -- Aggarwal, Gautam -- Berriman, Matthew -- Sisk, Ellen -- Rajandream, Marie-Adele -- Adlem, Ellen -- Aert, Rita -- Anupama, Atashi -- Apostolou, Zina -- Attipoe, Philip -- Bason, Nathalie -- Bauser, Christopher -- Beck, Alfred -- Beverley, Stephen M -- Bianchettin, Gabriella -- Borzym, Katja -- Bothe, Gordana -- Bruschi, Carlo V -- Collins, Matt -- Cadag, Eithon -- Ciarloni, Laura -- Clayton, Christine -- Coulson, Richard M R -- Cronin, Ann -- Cruz, Angela K -- Davies, Robert M -- De Gaudenzi, Javier -- Dobson, Deborah E -- Duesterhoeft, Andreas -- Fazelina, Gholam -- Fosker, Nigel -- Frasch, Alberto Carlos -- Fraser, Audrey -- Fuchs, Monika -- Gabel, Claudia -- Goble, Arlette -- Goffeau, Andre -- Harris, David -- Hertz-Fowler, Christiane -- Hilbert, Helmut -- Horn, David -- Huang, Yiting -- Klages, Sven -- Knights, Andrew -- Kube, Michael -- Larke, Natasha -- Litvin, Lyudmila -- Lord, Angela -- Louie, Tin -- Marra, Marco -- Masuy, David -- Matthews, Keith -- Michaeli, Shulamit -- Mottram, Jeremy C -- Muller-Auer, Silke -- Munden, Heather -- Nelson, Siri -- Norbertczak, Halina -- Oliver, Karen -- O'neil, Susan -- Pentony, Martin -- Pohl, Thomas M -- Price, Claire -- Purnelle, Benedicte -- Quail, Michael A -- Rabbinowitsch, Ester -- Reinhardt, Richard -- Rieger, Michael -- Rinta, Joel -- Robben, Johan -- Robertson, Laura -- Ruiz, Jeronimo C -- Rutter, Simon -- Saunders, David -- Schafer, Melanie -- Schein, Jacquie -- Schwartz, David C -- Seeger, Kathy -- Seyler, Amber -- Sharp, Sarah -- Shin, Heesun -- Sivam, Dhileep -- Squares, Rob -- Squares, Steve -- Tosato, Valentina -- Vogt, Christy -- Volckaert, Guido -- Wambutt, Rolf -- Warren, Tim -- Wedler, Holger -- Woodward, John -- Zhou, Shiguo -- Zimmermann, Wolfgang -- Smith, Deborah F -- Blackwell, Jenefer M -- Stuart, Kenneth D -- Barrell, Bart -- Myler, Peter J -- R01 AI040599/AI/NIAID NIH HHS/ -- R01 AI053667/AI/NIAID NIH HHS/ -- U01 AI040599/AI/NIAID NIH HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2005 Jul 15;309(5733):436-42.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridgeshire CB10 1SA, UK. alicat@sanger.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16020728" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromatin/genetics/metabolism ; Gene Expression Regulation ; Genes, Protozoan ; Genes, rRNA ; *Genome, Protozoan ; Glycoconjugates/biosynthesis/metabolism ; Leishmania major/chemistry/*genetics/metabolism ; Leishmaniasis, Cutaneous/parasitology ; Lipid Metabolism ; Membrane Proteins/biosynthesis/chemistry/genetics/metabolism ; Molecular Sequence Data ; Multigene Family ; Protein Biosynthesis ; Protein Processing, Post-Translational ; Protozoan Proteins/biosynthesis/chemistry/genetics/metabolism ; RNA Processing, Post-Transcriptional ; RNA Splicing ; RNA, Protozoan/genetics/metabolism ; *Sequence Analysis, DNA ; Transcription, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1995-10-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goffeau, A -- New York, N.Y. -- Science. 1995 Oct 20;270(5235):445-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Universite Catholique de Louvain, Unite de Biochimie Physiologique, Louvain-la-Neuve, Belgium.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7569997" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/genetics ; *Chromosome Mapping ; Genes, Bacterial ; *Genome, Bacterial ; Membrane Proteins/genetics ; Mycoplasma/*genetics ; *Sequence Analysis, DNA
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Bioenergetics 1187 (1994), S. 152-162 
    ISSN: 0005-2728
    Keywords: (Yeast) ; ATP binding ; Multidrug resistance ; Superfamily
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-0983
    Keywords: Multidrug resistance ; Candida albicans ; Saccharomyces cerevisiae ; ABC transporters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract By functional complementation of a PDR5 null mutant of Saccharomyces cervisiae, we have cloned and sequenced the multidrug-resistance gene CDR1 of Candida albicans. Transformation by CDR1 of a PDR5-disrupted host hypersensitive to cycloheximide and chloramphenicol resulted in resistance to cycloheximide, chloramphenicol and other drugs, such as the antifungal miconazole, with collateral hypersensitivity to oligomycin, nystatin and 2,4 dinitrophenol. Our results also demonstrate the presence of several PDR5 complementing genes in C. albicans, displaying multidrug-resistance patterns different from PDR5 and CDR1. The nucleotide sequence of CDR1 revealed that, like PDR5, it encodes a putative membrane pump belonging to the ABC (ATP-binding cassette) superfamily. CDR1 encodes a 1501-residue protein of 169.9 kDa whose predicted structural organization is characterized by two homologous halves, each comprising a hydrophobic region with a set of six transmembrane stretches, preceded by a hydrophilic nucleotide binding fold.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1617-4623
    Keywords: Key words Saccharomyces cerevisiae ; PDR1 ; Transcriptional regulator ; Multidrug resistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Mutations at the yeast PDR1 transcriptional regulator locus are responsible for overexpression of the three ABC transporter genes PDR5, SNQ2 and YOR1, associated with the appearance of multiple drug resistance. The nucleotide sequences of 13 alleles of PDR1, comprising 6 multidrug resistance mutants, 1 intragenic suppressor and 6 wild types, have been determined. Single amino acid substitutions were shown to result from the mutations pdr1-2 (M308I), pdr1-3 (F815S), pdr1-6 (K302Q), pdr1-7 (P298A) and pdr1-8 (L1036 W), whereas the intragenic suppressor mutant pdr1-100 is deleted for the two amino acids L537 and A538. An isogenic series of strains was constructed containing the mutant alleles pdr1-3, pdr1-6 and pdr1-8 integrated into the genome. We found that the levels of resistance to cycloheximide, oligomycin, 4-nitroquinoline-N-oxide and ketoconazole were increased in all three mutants. The increase was more pronounced in the pdr1-3 than in the pdr1-6 and pdr1-8 mutants. Studies of the activity of the promoters of the ABC genes PDR5, SNQ2 and YOR1 demonstrated that the combination of the PDR5 promoter and the pdr1-3 mutation resulted in the highest level of promoter induction. Concomitantly, the level of PDR5 mRNA, of Pdr5p protein, and of its associated nucleoside triphosphatase activity, was strongly increased in the plasma membranes of the PDR1 mutants. Again, the pdr1-3 allele was associated with a stronger effect than the pdr1-8 and pdr1-6 alleles. The locations of the mutations in the PDR1 gene indicate that at least three different regions distributed throughout the Pdr1p transcription factor may be mutated to generate a Pdr1p with considerably increased transcriptional activation potency. These gain-of-function mutations support the concept, recently proposed, that in members of the large family of yeast Zn2Cys6 transcription factors a central inhibitory domain exists (delineated by the pdr1-7, pdr1-6 and pdr1-2 mutations). This domain may interact in a locked conformation with a putative, more C-terminally located inhibitory domain (mutated in pdr1-3), and with the putative activation domain (mutated in pdr1-8).
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of bioenergetics and biomembranes 27 (1995), S. 71-76 
    ISSN: 1573-6881
    Keywords: Multidrug resistance ; MDR ; PDR ; ABC membrane proteins ; transcription regulation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Physics
    Notes: Abstract This minireview describes a network of genes involved in multiple drug resistance of the yeastS. cerevisiae. The transcription regulators, PDR1, PDR3, PDR7, and PDR9 control the expression of the genePDR5, encoding a membrane protein of the ATP-binding-cassette superfamily and functioning as a drug extrusion pump. Next toPDR5, several other target genes, encoding membrane pumps of the ABC type, such asSNQ2, STE6, PDR10, PDR11, Y0R1, but also other membrane-associated (such asGAS1, D4405) or soluble proteins (such asG3PD), involved or not in multidrug resistance, are found to be controlled by PDR1. On another side, the PDR3 regulator participates with its homolog PDR1 to co- and auto-regulation circuits of yeast multidrug resistance.
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