Thurston S

References (5)

Title : The genome of Mycobacterium africanum West African 2 reveals a lineage-specific locus and genome erosion common to the M. tuberculosis complex - Bentley_2012_PLoS.Negl.Trop.Dis_6_e1552
Author(s) : Bentley SD , Comas I , Bryant JM , Walker D , Smith NH , Harris SR , Thurston S , Gagneux S , Wood J , Antonio M , Quail MA , Gehre F , Adegbola RA , Parkhill J , de Jong BC
Ref : PLoS Negl Trop Dis , 6 :e1552 , 2012
Abstract : BACKGROUND: M. africanum West African 2 constitutes an ancient lineage of the M. tuberculosis complex that commonly causes human tuberculosis in West Africa and has an attenuated phenotype relative to M. tuberculosis. METHODOLOGY/PRINCIPAL FINDINGS: In search of candidate genes underlying these differences, the genome of M. africanum West African 2 was sequenced using classical capillary sequencing techniques. Our findings reveal a unique sequence, RD900, that was independently lost during the evolution of two important lineages within the complex: the "modern" M. tuberculosis group and the lineage leading to M. bovis. Closely related to M. bovis and other animal strains within the M. tuberculosis complex, M. africanum West African 2 shares an abundance of pseudogenes with M. bovis but also with M. africanum West African clade 1. Comparison with other strains of the M. tuberculosis complex revealed pseudogenes events in all the known lineages pointing toward ongoing genome erosion likely due to increased genetic drift and relaxed selection linked to serial transmission-bottlenecks and an intracellular lifestyle. CONCLUSIONS/SIGNIFICANCE: The genomic differences identified between M. africanum West African 2 and the other strains of the Mycobacterium tuberculosis complex may explain its attenuated phenotype, and pave the way for targeted experiments to elucidate the phenotypic characteristic of M. africanum. Moreover, availability of the whole genome data allows for verification of conservation of targets used for the next generation of diagnostics and vaccines, in order to ensure similar efficacy in West Africa.
ESTHER : Bentley_2012_PLoS.Negl.Trop.Dis_6_e1552
PubMedSearch : Bentley_2012_PLoS.Negl.Trop.Dis_6_e1552
PubMedID: 22389744
Gene_locus related to this paper: myctu-cut3 , myctu-cutas1 , myctu-cutas2 , myctu-Rv1069c , myctu-RV1215C , myctu-RV1758 , myctu-RV3452 , myctu-RV3724 , myctu-Rv3802c

Title : Complete genome sequence and comparative genome analysis of enteropathogenic Escherichia coli O127:H6 strain E2348\/69 - Iguchi_2009_J.Bacteriol_191_347
Author(s) : Iguchi A , Thomson NR , Ogura Y , Saunders D , Ooka T , Henderson IR , Harris D , Asadulghani M , Kurokawa K , Dean P , Kenny B , Quail MA , Thurston S , Dougan G , Hayashi T , Parkhill J , Frankel G
Ref : Journal of Bacteriology , 191 :347 , 2009
Abstract : Enteropathogenic Escherichia coli (EPEC) was the first pathovar of E. coli to be implicated in human disease; however, no EPEC strain has been fully sequenced until now. Strain E2348/69 (serotype O127:H6 belonging to E. coli phylogroup B2) has been used worldwide as a prototype strain to study EPEC biology, genetics, and virulence. Studies of E2348/69 led to the discovery of the locus of enterocyte effacement-encoded type III secretion system (T3SS) and its cognate effectors, which play a vital role in attaching and effacing lesion formation on gut epithelial cells. In this study, we determined the complete genomic sequence of E2348/69 and performed genomic comparisons with other important E. coli strains. We identified 424 E2348/69-specific genes, most of which are carried on mobile genetic elements, and a number of genetic traits specifically conserved in phylogroup B2 strains irrespective of their pathotypes, including the absence of the ETT2-related T3SS, which is present in E. coli strains belonging to all other phylogroups. The genome analysis revealed the entire gene repertoire related to E2348/69 virulence. Interestingly, E2348/69 contains only 21 intact T3SS effector genes, all of which are carried on prophages and integrative elements, compared to over 50 effector genes in enterohemorrhagic E. coli O157. As E2348/69 is the most-studied pathogenic E. coli strain, this study provides a genomic context for the vast amount of existing experimental data. The unexpected simplicity of the E2348/69 T3SS provides the first opportunity to fully dissect the entire virulence strategy of attaching and effacing pathogens in the genomic context.
ESTHER : Iguchi_2009_J.Bacteriol_191_347
PubMedSearch : Iguchi_2009_J.Bacteriol_191_347
PubMedID: 18952797
Gene_locus related to this paper: ecoli-Aes , ecoli-rutD , ecoli-bioh , ecoli-C0410 , ecoli-C4836 , ecoli-dlhh , ecoli-entf , ecoli-fes , ecoli-pldb , ecoli-ptrb , ecoli-yafa , ecoli-yaim , ecoli-ybff , ecoli-ycfp , ecoli-ycjy , ecoli-yeiG , ecoli-YFBB , ecoli-yghX , ecoli-yhet , ecoli-yiel , ecoli-yjfp , ecoli-ypfh , ecoli-ypt1 , ecoli-yqia , ecoli-YfhR

Title : The genome of the simian and human malaria parasite Plasmodium knowlesi - Pain_2008_Nature_455_799
Author(s) : Pain A , Bohme U , Berry AE , Mungall K , Finn RD , Jackson AP , Mourier T , Mistry J , Pasini EM , Aslett MA , Balasubrammaniam S , Borgwardt K , Brooks K , Carret C , Carver TJ , Cherevach I , Chillingworth T , Clark TG , Galinski MR , Hall N , Harper D , Harris D , Hauser H , Ivens A , Janssen CS , Keane T , Larke N , Lapp S , Marti M , Moule S , Meyer IM , Ormond D , Peters N , Sanders M , Sanders S , Sargeant TJ , Simmonds M , Smith F , Squares R , Thurston S , Tivey AR , Walker D , White B , Zuiderwijk E , Churcher C , Quail MA , Cowman AF , Turner CM , Rajandream MA , Kocken CH , Thomas AW , Newbold CI , Barrell BG , Berriman M
Ref : Nature , 455 :799 , 2008
Abstract : Plasmodium knowlesi is an intracellular malaria parasite whose natural vertebrate host is Macaca fascicularis (the 'kra' monkey); however, it is now increasingly recognized as a significant cause of human malaria, particularly in southeast Asia. Plasmodium knowlesi was the first malaria parasite species in which antigenic variation was demonstrated, and it has a close phylogenetic relationship to Plasmodium vivax, the second most important species of human malaria parasite (reviewed in ref. 4). Despite their relatedness, there are important phenotypic differences between them, such as host blood cell preference, absence of a dormant liver stage or 'hypnozoite' in P. knowlesi, and length of the asexual cycle (reviewed in ref. 4). Here we present an analysis of the P. knowlesi (H strain, Pk1(A+) clone) nuclear genome sequence. This is the first monkey malaria parasite genome to be described, and it provides an opportunity for comparison with the recently completed P. vivax genome and other sequenced Plasmodium genomes. In contrast to other Plasmodium genomes, putative variant antigen families are dispersed throughout the genome and are associated with intrachromosomal telomere repeats. One of these families, the KIRs, contains sequences that collectively match over one-half of the host CD99 extracellular domain, which may represent an unusual form of molecular mimicry.
ESTHER : Pain_2008_Nature_455_799
PubMedSearch : Pain_2008_Nature_455_799
PubMedID: 18843368
Gene_locus related to this paper: plakh-b3kz42 , plakh-b3kz45 , plakh-b3l0y4 , plakh-b3l1r3 , plakh-b3l8u5 , plakh-b3l336 , plakh-b3l571 , plakh-b3la01 , plakh-b3lb44

Title : The genome sequence of the fish pathogen Aliivibrio salmonicida strain LFI1238 shows extensive evidence of gene decay - Hjerde_2008_BMC.Genomics_9_616
Author(s) : Hjerde E , Lorentzen MS , Holden MT , Seeger K , Paulsen S , Bason N , Churcher C , Harris D , Norbertczak H , Quail MA , Sanders S , Thurston S , Parkhill J , Willassen NP , Thomson NR
Ref : BMC Genomics , 9 :616 , 2008
Abstract : BACKGROUND: The fish pathogen Aliivibrio salmonicida is the causative agent of cold-water vibriosis in marine aquaculture. The Gram-negative bacterium causes tissue degradation, hemolysis and sepsis in vivo.
RESULTS: In total, 4 286 protein coding sequences were identified, and the 4.6 Mb genome of A. salmonicida has a six partite architecture with two chromosomes and four plasmids. Sequence analysis revealed a highly fragmented genome structure caused by the insertion of an extensive number of insertion sequence (IS) elements. The IS elements can be related to important evolutionary events such as gene acquisition, gene loss and chromosomal rearrangements. New A. salmonicida functional capabilities that may have been aquired through horizontal DNA transfer include genes involved in iron-acquisition, and protein secretion and play potential roles in pathogenicity. On the other hand, the degeneration of 370 genes and consequent loss of specific functions suggest that A. salmonicida has a reduced metabolic and physiological capacity in comparison to related Vibrionaceae species. CONCLUSION: Most prominent is the loss of several genes involved in the utilisation of the polysaccharide chitin. In particular, the disruption of three extracellular chitinases responsible for enzymatic breakdown of chitin makes A. salmonicida unable to grow on the polymer form of chitin. These, and other losses could restrict the variety of carrier organisms A. salmonicida can attach to, and associate with. Gene acquisition and gene loss may be related to the emergence of A. salmonicida as a fish pathogen.
ESTHER : Hjerde_2008_BMC.Genomics_9_616
PubMedSearch : Hjerde_2008_BMC.Genomics_9_616
PubMedID: 19099551
Gene_locus related to this paper: alisl-b6elz2 , alisl-b6ek45

Title : Comparative genomic analysis of three Leishmania species that cause diverse human disease - Peacock_2007_Nat.Genet_39_839
Author(s) : Peacock CS , Seeger K , Harris D , Murphy L , Ruiz JC , Quail MA , Peters N , Adlem E , Tivey A , Aslett M , Kerhornou A , Ivens A , Fraser A , Rajandream MA , Carver T , Norbertczak H , Chillingworth T , Hance Z , Jagels K , Moule S , Ormond D , Rutter S , Squares R , Whitehead S , Rabbinowitsch E , Arrowsmith C , White B , Thurston S , Bringaud F , Baldauf SL , Faulconbridge A , Jeffares D , Depledge DP , Oyola SO , Hilley JD , Brito LO , Tosi LR , Barrell B , Cruz AK , Mottram JC , Smith DF , Berriman M
Ref : Nat Genet , 39 :839 , 2007
Abstract : Leishmania parasites cause a broad spectrum of clinical disease. Here we report the sequencing of the genomes of two species of Leishmania: Leishmania infantum and Leishmania braziliensis. The comparison of these sequences with the published genome of Leishmania major reveals marked conservation of synteny and identifies only approximately 200 genes with a differential distribution between the three species. L. braziliensis, contrary to Leishmania species examined so far, possesses components of a putative RNA-mediated interference pathway, telomere-associated transposable elements and spliced leader-associated SLACS retrotransposons. We show that pseudogene formation and gene loss are the principal forces shaping the different genomes. Genes that are differentially distributed between the species encode proteins implicated in host-pathogen interactions and parasite survival in the macrophage.
ESTHER : Peacock_2007_Nat.Genet_39_839
PubMedSearch : Peacock_2007_Nat.Genet_39_839
PubMedID: 17572675
Gene_locus related to this paper: leibr-a4h6l0 , leibr-a4h6l1 , leibr-a4h9b6 , leibr-a4h908 , leibr-a4h956 , leibr-a4h959 , leibr-a4h960 , leibr-a4hen1 , leibr-a4hf07 , leibr-a4hgl0 , leibr-a4hhu6 , leibr-a4hj94 , leibr-a4hk72 , leibr-a4hpa8 , leibr-a4hpz5 , leiin-a4huz4 , leiin-a4hxe0 , leiin-a4hxh8 , leiin-a4hxi1 , leiin-a4hxn7 , leiin-a4hyv9 , leiin-a4i1v9 , leiin-a4i4z6 , leiin-a4i6n9 , leiin-a4i7q7 , leiin-a4idl6 , leima-e9ady6 , leima-OPB , leima-q4q0t5 , leima-q4q8a8 , leima-q4q398 , leima-q4q942 , leima-q4qe85 , leima-q4qe86 , leima-q4qj45