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  • 1
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    A tomato cysteine protease required for Cf-2-dependent disease resistance and suppression of autonecrosis (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-27
    Description: Little is known of how plant disease resistance (R) proteins recognize pathogens and activate plant defenses. Rcr3 is specifically required for the function of Cf-2, a Lycopersicon pimpinellifolium gene bred into cultivated tomato (Lycopersicon esculentum) for resistance to Cladosporium fulvum. Rcr3 encodes a secreted papain-like cysteine endoprotease. Genetic analysis shows Rcr3 is allelic to the L. pimpinellifolium Ne gene, which suppresses the Cf-2-dependent autonecrosis conditioned by its L. esculentum allele, ne (necrosis). Rcr3 alleles from these two species encode proteins that differ by only seven amino acids. Possible roles of Rcr3 in Cf-2-dependent defense and autonecrosis are discussed.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kruger, Julia -- Thomas, Colwyn M -- Golstein, Catherine -- Dixon, Mark S -- Smoker, Matthew -- Tang, Saijun -- Mulder, Lonneke -- Jones, Jonathan D G -- New York, N.Y. -- Science. 2002 Apr 26;296(5568):744-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Sainsbury Laboratory, John Innes Centre, Norwich NR4 7UH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11976458" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Amino Acid Sequence ; Base Sequence ; Cladosporium/*physiology ; Cloning, Molecular ; Cysteine Endopeptidases/chemistry/*genetics/*metabolism ; Cysteine Proteinase Inhibitors/pharmacology ; Gene Expression Regulation, Plant ; *Genes, Plant ; Immunity, Innate ; Leucine/analogs & derivatives/pharmacology ; Lycopersicon esculentum/*enzymology/genetics/*microbiology/physiology ; Molecular Sequence Data ; Mutation ; Phenotype ; *Plant Diseases ; Plant Leaves/enzymology ; Plant Proteins/*metabolism ; Plants, Genetically Modified ; Promoter Regions, Genetic ; Recombinant Fusion Proteins/chemistry/metabolism ; Tobacco/genetics ; Transgenes
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Recent origin of Plasmodium falciparum from a single progenitor (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-07-21
    Description: Genetic variability of Plasmodium falciparum underlies its transmission success and thwarts efforts to control disease caused by this parasite. Genetic variation in antigenic, drug resistance, and pathogenesis determinants is abundant, consistent with an ancient origin of P. falciparum, whereas DNA variation at silent (synonymous) sites in coding sequences appears virtually absent, consistent with a recent origin of the parasite. To resolve this paradox, we analyzed introns and demonstrated that these are deficient in single-nucleotide polymorphisms, as are synonymous sites in coding regions. These data establish the recent origin of P. falciparum and further provide an explanation for the abundant diversity observed in antigen and other selected genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Volkman, S K -- Barry, A E -- Lyons, E J -- Nielsen, K M -- Thomas, S M -- Choi, M -- Thakore, S S -- Day, K P -- Wirth, D F -- Hartl, D L -- New York, N.Y. -- Science. 2001 Jul 20;293(5529):482-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Harvard-Oxford Malaria Genome Diversity Project, Department of Immunology and Infectious Diseases, Harvard School of Public Health, Boston, MA 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11463913" target="_blank"〉PubMed〈/a〉
    Keywords: Africa ; Agriculture ; Alternative Splicing ; Animals ; Base Sequence ; *Biological Evolution ; Genes, Protozoan ; *Genetic Variation ; Humans ; *Introns ; Malaria, Falciparum/epidemiology/parasitology/transmission ; *Microsatellite Repeats ; Molecular Sequence Data ; Mutation ; Plasmodium/genetics ; Plasmodium falciparum/*genetics ; *Polymorphism, Single Nucleotide
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Mutations in the sulfonylurea receptor gene in familial persistent hyperinsulinemic hypoglycemia of infancy (1995)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1995-04-21
    Description: Familial persistent hyperinsulinemic hypoglycemia of infancy (PHHI), an autosomal recessive disorder characterized by unregulated insulin secretion, is linked to chromosome 11p14-15.1. The newly cloned high-affinity sulfonylurea receptor (SUR) gene, a regulator of insulin secretion, was mapped to 11p15.1 by means of fluorescence in situ hybridization. Two separate SUR gene splice site mutations, which segregated with disease phenotype, were identified in affected individuals from nine different families. Both mutations resulted in aberrant processing of the RNA sequence and disruption of the putative second nucleotide binding domain of the SUR protein. Abnormal insulin secretion in PHHI appears to be caused by mutations in the SUR gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thomas, P M -- Cote, G J -- Wohllk, N -- Haddad, B -- Mathew, P M -- Rabl, W -- Aguilar-Bryan, L -- Gagel, R F -- Bryan, J -- DK38146/DK/NIDDK NIH HHS/ -- DK44311/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1995 Apr 21;268(5209):426-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Specialties, University of Texas M.D. Anderson Cancer Center, Houston 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7716548" target="_blank"〉PubMed〈/a〉
    Keywords: *ATP-Binding Cassette Transporters ; Amino Acid Sequence ; Base Sequence ; Chromosome Mapping ; Chromosomes, Human, Pair 11 ; DNA Mutational Analysis ; DNA, Complementary/genetics ; Genotype ; Humans ; Hyperinsulinism/*genetics ; Hypoglycemia/*genetics ; Infant ; Insulin/secretion ; Molecular Sequence Data ; Mutation ; Pancreatic Diseases/*genetics ; Phenotype ; Point Mutation ; Potassium Channels/chemistry/*genetics ; *Potassium Channels, Inwardly Rectifying ; RNA Splicing ; Receptors, Drug/chemistry/*genetics ; Sulfonylurea Compounds/metabolism ; Sulfonylurea Receptors
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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