Mohamoud Y

References (6)

Title : Insights into plant cell wall degradation from the genome sequence of the soil bacterium Cellvibrio japonicus - DeBoy_2008_J.Bacteriol_190_5455
Author(s) : DeBoy RT , Mongodin EF , Fouts DE , Tailford LE , Khouri H , Emerson JB , Mohamoud Y , Watkins K , Henrissat B , Gilbert HJ , Nelson KE
Ref : Journal of Bacteriology , 190 :5455 , 2008
Abstract : The plant cell wall, which consists of a highly complex array of interconnecting polysaccharides, is the most abundant source of organic carbon in the biosphere. Microorganisms that degrade the plant cell wall synthesize an extensive portfolio of hydrolytic enzymes that display highly complex molecular architectures. To unravel the intricate repertoire of plant cell wall-degrading enzymes synthesized by the saprophytic soil bacterium Cellvibrio japonicus, we sequenced and analyzed its genome, which predicts that the bacterium contains the complete repertoire of enzymes required to degrade plant cell wall and storage polysaccharides. Approximately one-third of these putative proteins (57) are predicted to contain carbohydrate binding modules derived from 13 of the 49 known families. Sequence analysis reveals approximately 130 predicted glycoside hydrolases that target the major structural and storage plant polysaccharides. In common with that of the colonic prokaryote Bacteroides thetaiotaomicron, the genome of C. japonicus is predicted to encode a large number of GH43 enzymes, suggesting that the extensive arabinose decorations appended to pectins and xylans may represent a major nutrient source, not just for intestinal bacteria but also for microorganisms that occupy terrestrial ecosystems. The results presented here predict that C. japonicus possesses an extensive range of glycoside hydrolases, lyases, and esterases. Most importantly, the genome of C. japonicus is remarkably similar to that of the gram-negative marine bacterium, Saccharophagus degradans 2-40(T). Approximately 50% of the predicted C. japonicus plant-degradative apparatus appears to be shared with S. degradans, consistent with the utilization of plant-derived complex carbohydrates as a major substrate by both organisms.
ESTHER : DeBoy_2008_J.Bacteriol_190_5455
PubMedSearch : DeBoy_2008_J.Bacteriol_190_5455
PubMedID: 18556790
Gene_locus related to this paper: celju-b3pei5 , celju-b3pf25 , celju-b3pfb5 , celju-b3pgh5 , celju-b3pgz5 , celju-b3ph03 , celju-b3pi00 , celju-b3pi89 , celju-b3pj26 , celju-b3pju5 , celju-b3pks4 , celju-b3pks5 , celju-b3plp7 , celju-metx , celju-b3phr4 , celju-b3pjj6 , celju-b3pcj5 , celju-b3pcu6 , celju-b3pei0

Title : Complete genome sequence of the N2-fixing broad host range endophyte Klebsiella pneumoniae 342 and virulence predictions verified in mice - Fouts_2008_PLoS.Genet_4_e1000141
Author(s) : Fouts DE , Tyler HL , DeBoy RT , Daugherty S , Ren Q , Badger JH , Durkin AS , Huot H , Shrivastava S , Kothari S , Dodson RJ , Mohamoud Y , Khouri H , Roesch LF , Krogfelt KA , Struve C , Triplett EW , Methe BA
Ref : PLoS Genet , 4 :e1000141 , 2008
Abstract : We report here the sequencing and analysis of the genome of the nitrogen-fixing endophyte, Klebsiella pneumoniae 342. Although K. pneumoniae 342 is a member of the enteric bacteria, it serves as a model for studies of endophytic, plant-bacterial associations due to its efficient colonization of plant tissues (including maize and wheat, two of the most important crops in the world), while maintaining a mutualistic relationship that encompasses supplying organic nitrogen to the host plant. Genomic analysis examined K. pneumoniae 342 for the presence of previously identified genes from other bacteria involved in colonization of, or growth in, plants. From this set, approximately one-third were identified in K. pneumoniae 342, suggesting additional factors most likely contribute to its endophytic lifestyle. Comparative genome analyses were used to provide new insights into this question. Results included the identification of metabolic pathways and other features devoted to processing plant-derived cellulosic and aromatic compounds, and a robust complement of transport genes (15.4%), one of the highest percentages in bacterial genomes sequenced. Although virulence and antibiotic resistance genes were predicted, experiments conducted using mouse models showed pathogenicity to be attenuated in this strain. Comparative genomic analyses with the presumed human pathogen K. pneumoniae MGH78578 revealed that MGH78578 apparently cannot fix nitrogen, and the distribution of genes essential to surface attachment, secretion, transport, and regulation and signaling varied between each genome, which may indicate critical divergences between the strains that influence their preferred host ranges and lifestyles (endophytic plant associations for K. pneumoniae 342 and presumably human pathogenesis for MGH78578). Little genome information is available concerning endophytic bacteria. The K. pneumoniae 342 genome will drive new research into this less-understood, but important category of bacterial-plant host relationships, which could ultimately enhance growth and nutrition of important agricultural crops and development of plant-derived products and biofuels.
ESTHER : Fouts_2008_PLoS.Genet_4_e1000141
PubMedSearch : Fouts_2008_PLoS.Genet_4_e1000141
PubMedID: 18654632
Gene_locus related to this paper: klep3-b5xp56 , klep3-b5xqp6 , klep3-b5xzn5 , klep3-b5xzy8 , klep3-bioh , klep3-menh , klep7-a6t8q2 , klep7-a6t9v6 , klep7-a6tb98 , klep7-mhpc , klep7-y243 , klep7-y1077 , klepn-c4x8q1 , klepn-w8uta0 , klep3-rutd

Title : Genome sequence and identification of candidate vaccine antigens from the animal pathogen Dichelobacter nodosus - Myers_2007_Nat.Biotechnol_25_569
Author(s) : Myers GS , Parker D , Al-Hasani K , Kennan RM , Seemann T , Ren Q , Badger JH , Selengut JD , DeBoy RT , Tettelin H , Boyce JD , McCarl VP , Han X , Nelson WC , Madupu R , Mohamoud Y , Holley T , Fedorova N , Khouri H , Bottomley SP , Whittington RJ , Adler B , Songer JG , Rood JI , Paulsen IT
Ref : Nat Biotechnol , 25 :569 , 2007
Abstract : Dichelobacter nodosus causes ovine footrot, a disease that leads to severe economic losses in the wool and meat industries. We sequenced its 1.4-Mb genome, the smallest known genome of an anaerobe. It differs markedly from small genomes of intracellular bacteria, retaining greater biosynthetic capabilities and lacking any evidence of extensive ongoing genome reduction. Comparative genomic microarray studies and bioinformatic analysis suggested that, despite its small size, almost 20% of the genome is derived from lateral gene transfer. Most of these regions seem to be associated with virulence. Metabolic reconstruction indicated unsuspected capabilities, including carbohydrate utilization, electron transfer and several aerobic pathways. Global transcriptional profiling and bioinformatic analysis enabled the prediction of virulence factors and cell surface proteins. Screening of these proteins against ovine antisera identified eight immunogenic proteins that are candidate antigens for a cross-protective vaccine.
ESTHER : Myers_2007_Nat.Biotechnol_25_569
PubMedSearch : Myers_2007_Nat.Biotechnol_25_569
PubMedID: 17468768
Gene_locus related to this paper: dicnv-a5evg0 , dicnv-a5ewn0 , dicnv-a5ewp3

Title : Genome sequence of Synechococcus CC9311: Insights into adaptation to a coastal environment - Palenik_2006_Proc.Natl.Acad.Sci.U.S.A_103_13555
Author(s) : Palenik B , Ren Q , Dupont CL , Myers GS , Heidelberg JF , Badger JH , Madupu R , Nelson WC , Brinkac LM , Dodson RJ , Durkin AS , Daugherty SC , Sullivan SA , Khouri H , Mohamoud Y , Halpin R , Paulsen IT
Ref : Proc Natl Acad Sci U S A , 103 :13555 , 2006
Abstract : Coastal aquatic environments are typically more highly productive and dynamic than open ocean ones. Despite these differences, cyanobacteria from the genus Synechococcus are important primary producers in both types of ecosystems. We have found that the genome of a coastal cyanobacterium, Synechococcus sp. strain CC9311, has significant differences from an open ocean strain, Synechococcus sp. strain WH8102, and these are consistent with the differences between their respective environments. CC9311 has a greater capacity to sense and respond to changes in its (coastal) environment. It has a much larger capacity to transport, store, use, or export metals, especially iron and copper. In contrast, phosphate acquisition seems less important, consistent with the higher concentration of phosphate in coastal environments. CC9311 is predicted to have differences in its outer membrane lipopolysaccharide, and this may be characteristic of the speciation of some cyanobacterial groups. In addition, the types of potentially horizontally transferred genes are markedly different between the coastal and open ocean genomes and suggest a more prominent role for phages in horizontal gene transfer in oligotrophic environments.
ESTHER : Palenik_2006_Proc.Natl.Acad.Sci.U.S.A_103_13555
PubMedSearch : Palenik_2006_Proc.Natl.Acad.Sci.U.S.A_103_13555
PubMedID: 16938853
Gene_locus related to this paper: syns3-q0i8r7 , syns3-q0i9w2 , syns3-q0i996 , syns3-q0ia13 , syns3-q0ia55 , syns3-q0ib73 , syns3-q0ibm2 , syns3-q0ibp1 , syns3-q0iby1 , syns9-q3ax89 , syns3-q0ibv4

Title : Genomic sequence of the pathogenic and allergenic filamentous fungus Aspergillus fumigatus - Nierman_2005_Nature_438_1151
Author(s) : Nierman WC , Pain A , Anderson MJ , Wortman JR , Kim HS , Arroyo J , Berriman M , Abe K , Archer DB , Bermejo C , Bennett J , Bowyer P , Chen D , Collins M , Coulsen R , Davies R , Dyer PS , Farman M , Fedorova N , Feldblyum TV , Fischer R , Fosker N , Fraser A , Garcia JL , Garcia MJ , Goble A , Goldman GH , Gomi K , Griffith-Jones S , Gwilliam R , Haas B , Haas H , Harris D , Horiuchi H , Huang J , Humphray S , Jimenez J , Keller N , Khouri H , Kitamoto K , Kobayashi T , Konzack S , Kulkarni R , Kumagai T , Lafon A , Latge JP , Li W , Lord A , Lu C , Majoros WH , May GS , Miller BL , Mohamoud Y , Molina M , Monod M , Mouyna I , Mulligan S , Murphy L , O'Neil S , Paulsen I , Penalva MA , Pertea M , Price C , Pritchard BL , Quail MA , Rabbinowitsch E , Rawlins N , Rajandream MA , Reichard U , Renauld H , Robson GD , Rodriguez de Cordoba S , Rodriguez-Pena JM , Ronning CM , Rutter S , Salzberg SL , Sanchez M , Sanchez-Ferrero JC , Saunders D , Seeger K , Squares R , Squares S , Takeuchi M , Tekaia F , Turner G , Vazquez de Aldana CR , Weidman J , White O , Woodward J , Yu JH , Fraser C , Galagan JE , Asai K , Machida M , Hall N , Barrell B , Denning DW
Ref : Nature , 438 :1151 , 2005
Abstract : Aspergillus fumigatus is exceptional among microorganisms in being both a primary and opportunistic pathogen as well as a major allergen. Its conidia production is prolific, and so human respiratory tract exposure is almost constant. A. fumigatus is isolated from human habitats and vegetable compost heaps. In immunocompromised individuals, the incidence of invasive infection can be as high as 50% and the mortality rate is often about 50% (ref. 2). The interaction of A. fumigatus and other airborne fungi with the immune system is increasingly linked to severe asthma and sinusitis. Although the burden of invasive disease caused by A. fumigatus is substantial, the basic biology of the organism is mostly obscure. Here we show the complete 29.4-megabase genome sequence of the clinical isolate Af293, which consists of eight chromosomes containing 9,926 predicted genes. Microarray analysis revealed temperature-dependent expression of distinct sets of genes, as well as 700 A. fumigatus genes not present or significantly diverged in the closely related sexual species Neosartorya fischeri, many of which may have roles in the pathogenicity phenotype. The Af293 genome sequence provides an unparalleled resource for the future understanding of this remarkable fungus.
ESTHER : Nierman_2005_Nature_438_1151
PubMedSearch : Nierman_2005_Nature_438_1151
PubMedID: 16372009
Gene_locus related to this paper: aspfc-b0xp50 , aspfc-b0xu40 , aspfc-b0xzj6 , aspfc-dpp5 , aspfu-apth1 , aspfu-axe1 , aspfu-CBPYA , aspfu-faec , aspfu-kex1 , aspfu-ppme1 , aspfu-q4wa39 , aspfu-q4wa78 , aspfu-q4wf56 , aspfu-q4wg73 , aspfu-q4wk44 , aspfu-q4wkh6 , aspfu-q4wnx3 , aspfu-q4wpb9 , aspfu-q4wqv2 , aspfu-q4wub2 , aspfu-q4wxr1 , aspfu-q4x0n6 , aspfu-q4x1n0 , aspfu-q5vjg7 , neofi-a1cwa6 , neofi-a1dfr9 , aspfm-a0a084bf80 , aspfu-fmac

Title : Phylogenomics of the reproductive parasite Wolbachia pipientis wMel: a streamlined genome overrun by mobile genetic elements - Wu_2004_PLoS.Biol_2_E69
Author(s) : Wu M , Sun LV , Vamathevan J , Riegler M , Deboy R , Brownlie JC , McGraw EA , Martin W , Esser C , Ahmadinejad N , Wiegand C , Madupu R , Beanan MJ , Brinkac LM , Daugherty SC , Durkin AS , Kolonay JF , Nelson WC , Mohamoud Y , Lee P , Berry K , Young MB , Utterback T , Weidman J , Nierman WC , Paulsen IT , Nelson KE , Tettelin H , O'Neill SL , Eisen JA
Ref : PLoS Biol , 2 :E69 , 2004
Abstract : The complete sequence of the 1,267,782 bp genome of Wolbachia pipientis wMel, an obligate intracellular bacteria of Drosophila melanogaster, has been determined. Wolbachia, which are found in a variety of invertebrate species, are of great interest due to their diverse interactions with different hosts, which range from many forms of reproductive parasitism to mutualistic symbioses. Analysis of the wMel genome, in particular phylogenomic comparisons with other intracellular bacteria, has revealed many insights into the biology and evolution of wMel and Wolbachia in general. For example, the wMel genome is unique among sequenced obligate intracellular species in both being highly streamlined and containing very high levels of repetitive DNA and mobile DNA elements. This observation, coupled with multiple evolutionary reconstructions, suggests that natural selection is somewhat inefficient in wMel, most likely owing to the occurrence of repeated population bottlenecks. Genome analysis predicts many metabolic differences with the closely related Rickettsia species, including the presence of intact glycolysis and purine synthesis, which may compensate for an inability to obtain ATP directly from its host, as Rickettsia can. Other discoveries include the apparent inability of wMel to synthesize lipopolysaccharide and the presence of the most genes encoding proteins with ankyrin repeat domains of any prokaryotic genome yet sequenced. Despite the ability of wMel to infect the germline of its host, we find no evidence for either recent lateral gene transfer between wMel and D. melanogaster or older transfers between Wolbachia and any host. Evolutionary analysis further supports the hypothesis that mitochondria share a common ancestor with the alpha-Proteobacteria, but shows little support for the grouping of mitochondria with species in the order Rickettsiales. With the availability of the complete genomes of both species and excellent genetic tools for the host, the wMel-D. melanogaster symbiosis is now an ideal system for studying the biology and evolution of Wolbachia infections.
ESTHER : Wu_2004_PLoS.Biol_2_E69
PubMedSearch : Wu_2004_PLoS.Biol_2_E69
PubMedID: 15024419
Gene_locus related to this paper: wolpm-q73gf0 , wolpm-q73gx7