Davidsen TM

References (9)

Title : Three genomes from the phylum Acidobacteria provide insight into the lifestyles of these microorganisms in soils - Ward_2009_Appl.Environ.Microbiol_75_2046
Author(s) : Ward NL , Challacombe JF , Janssen PH , Henrissat B , Coutinho PM , Wu M , Xie G , Haft DH , Sait M , Badger J , Barabote RD , Bradley B , Brettin TS , Brinkac LM , Bruce D , Creasy T , Daugherty SC , Davidsen TM , DeBoy RT , Detter JC , Dodson RJ , Durkin AS , Ganapathy A , Gwinn-Giglio M , Han CS , Khouri H , Kiss H , Kothari SP , Madupu R , Nelson KE , Nelson WC , Paulsen I , Penn K , Ren Q , Rosovitz MJ , Selengut JD , Shrivastava S , Sullivan SA , Tapia R , Thompson LS , Watkins KL , Yang Q , Yu C , Zafar N , Zhou L , Kuske CR
Ref : Applied Environmental Microbiology , 75 :2046 , 2009
Abstract : The complete genomes of three strains from the phylum Acidobacteria were compared. Phylogenetic analysis placed them as a unique phylum. They share genomic traits with members of the Proteobacteria, the Cyanobacteria, and the Fungi. The three strains appear to be versatile heterotrophs. Genomic and culture traits indicate the use of carbon sources that span simple sugars to more complex substrates such as hemicellulose, cellulose, and chitin. The genomes encode low-specificity major facilitator superfamily transporters and high-affinity ABC transporters for sugars, suggesting that they are best suited to low-nutrient conditions. They appear capable of nitrate and nitrite reduction but not N(2) fixation or denitrification. The genomes contained numerous genes that encode siderophore receptors, but no evidence of siderophore production was found, suggesting that they may obtain iron via interaction with other microorganisms. The presence of cellulose synthesis genes and a large class of novel high-molecular-weight excreted proteins suggests potential traits for desiccation resistance, biofilm formation, and/or contribution to soil structure. Polyketide synthase and macrolide glycosylation genes suggest the production of novel antimicrobial compounds. Genes that encode a variety of novel proteins were also identified. The abundance of acidobacteria in soils worldwide and the breadth of potential carbon use by the sequenced strains suggest significant and previously unrecognized contributions to the terrestrial carbon cycle. Combining our genomic evidence with available culture traits, we postulate that cells of these isolates are long-lived, divide slowly, exhibit slow metabolic rates under low-nutrient conditions, and are well equipped to tolerate fluctuations in soil hydration.
ESTHER : Ward_2009_Appl.Environ.Microbiol_75_2046
PubMedSearch : Ward_2009_Appl.Environ.Microbiol_75_2046
PubMedID: 19201974
Gene_locus related to this paper: korve-q1ihr9 , korve-q1ii02 , korve-q1iit0 , korve-q1ilk4 , korve-q1imj9 , korve-q1ims4 , korve-q1iqj0 , korve-q1isy7 , korve-q1itj5 , korve-q1itz6 , korve-q1ivc8 , acic5-c1f1u6 , acic5-c1f2i7 , acic5-c1f4m6 , acic5-c1f4y4 , acic5-c1f5a7 , acic5-c1f5u2 , acic5-c1f7a9 , acic5-c1f7x6 , acic5-c1f8y9 , acic5-c1f9m2 , acic5-c1f594 , acic5-c1f609 , acic5-c1f692 , acic5-c1f970 , acic5-c1fa52 , korve-q1iiw2 , korve-q1ivn9 , solue-q01nb0 , solue-q01qj6 , solue-q01r37 , solue-q01rq8 , solue-q01rz0 , solue-q01t44 , solue-q01t57 , solue-q01ts5 , solue-q01tv4 , solue-q01vd8 , solue-q01vr3 , solue-q01vw5 , solue-q01w12 , solue-q01wt9 , solue-q01y40 , solue-q01ym8 , solue-q01z24 , solue-q01z97 , solue-q01zl4 , solue-q01zm0 , solue-q01zm5 , solue-q01zm7 , solue-q02aa4 , solue-q02ab9 , solue-q02b72 , solue-q02bs8 , solue-q02bt7 , solue-q02cp0 , solue-q02d61 , solue-q020h3 , solue-q020i8 , solue-q021i6 , solue-q022b1 , solue-q022p8 , solue-q022q2 , solue-q022q3 , solue-q022x2 , solue-q022x5 , solue-q022x6 , solue-q022x8 , solue-q023e7 , solue-q024d9 , solue-q025c1 , solue-q026j1 , solue-q026k6 , solue-q026r6 , solue-q027p2 , solue-q027r8 , solue-q01zt5 , korve-q1itw6 , solue-q01yh7 , solue-q02ad6 , korve-q1imj6 , korve-q1iuf6 , acic5-c1f891 , solue-q026h7

Title : Genome sequence of Avery's virulent serotype 2 strain D39 of Streptococcus pneumoniae and comparison with that of unencapsulated laboratory strain R6 - Lanie_2007_J.Bacteriol_189_38
Author(s) : Lanie JA , Ng WL , Kazmierczak KM , Andrzejewski TM , Davidsen TM , Wayne KJ , Tettelin H , Glass JI , Winkler ME
Ref : Journal of Bacteriology , 189 :38 , 2007
Abstract : Streptococcus pneumoniae (pneumococcus) is a leading human respiratory pathogen that causes a variety of serious mucosal and invasive diseases. D39 is an historically important serotype 2 strain that was used in experiments by Avery and coworkers to demonstrate that DNA is the genetic material. Although isolated nearly a century ago, D39 remains extremely virulent in murine infection models and is perhaps the strain used most frequently in current studies of pneumococcal pathogenesis. To date, the complete genome sequences have been reported for only two S. pneumoniae strains: TIGR4, a recent serotype 4 clinical isolate, and laboratory strain R6, an avirulent, unencapsulated derivative of strain D39. We report here the genome sequences and new annotation of two different isolates of strain D39 and the corrected sequence of strain R6. Comparisons of these three related sequences allowed deduction of the likely sequence of the D39 progenitor and mutations that arose in each isolate. Despite its numerous repeated sequences and IS elements, the serotype 2 genome has remained remarkably stable during cultivation, and one of the D39 isolates contains only five relatively minor mutations compared to the deduced D39 progenitor. In contrast, laboratory strain R6 contains 71 single-base-pair changes, six deletions, and four insertions and has lost the cryptic pDP1 plasmid compared to the D39 progenitor strain. Many of these mutations are in or affect the expression of genes that play important roles in regulation, metabolism, and virulence. The nature of the mutations that arose spontaneously in these three strains, the relative global transcription patterns determined by microarray analyses, and the implications of the D39 genome sequences to studies of pneumococcal physiology and pathogenesis are presented and discussed.
ESTHER : Lanie_2007_J.Bacteriol_189_38
PubMedSearch : Lanie_2007_J.Bacteriol_189_38
PubMedID: 17041037
Gene_locus related to this paper: strp2-q04l35 , strpj-b8zns7 , strpn-AXE1 , strpn-b2dz20 , strpn-pepx , strpn-SP0614 , strpn-SP1343

Title : Comparative genomic evidence for a close relationship between the dimorphic prosthecate bacteria Hyphomonas neptunium and Caulobacter crescentus - Badger_2006_J.Bacteriol_188_6841
Author(s) : Badger JH , Hoover TR , Brun YV , Weiner RM , Laub MT , Alexandre G , Mrazek J , Ren Q , Paulsen IT , Nelson KE , Khouri HM , Radune D , Sosa J , Dodson RJ , Sullivan SA , Rosovitz MJ , Madupu R , Brinkac LM , Durkin AS , Daugherty SC , Kothari SP , Giglio MG , Zhou L , Haft DH , Selengut JD , Davidsen TM , Yang Q , Zafar N , Ward NL
Ref : Journal of Bacteriology , 188 :6841 , 2006
Abstract : The dimorphic prosthecate bacteria (DPB) are alpha-proteobacteria that reproduce in an asymmetric manner rather than by binary fission and are of interest as simple models of development. Prior to this work, the only member of this group for which genome sequence was available was the model freshwater organism Caulobacter crescentus. Here we describe the genome sequence of Hyphomonas neptunium, a marine member of the DPB that differs from C. crescentus in that H. neptunium uses its stalk as a reproductive structure. Genome analysis indicates that this organism shares more genes with C. crescentus than it does with Silicibacter pomeroyi (a closer relative according to 16S rRNA phylogeny), that it relies upon a heterotrophic strategy utilizing a wide range of substrates, that its cell cycle is likely to be regulated in a similar manner to that of C. crescentus, and that the outer membrane complements of H. neptunium and C. crescentus are remarkably similar. H. neptunium swarmer cells are highly motile via a single polar flagellum. With the exception of cheY and cheR, genes required for chemotaxis were absent in the H. neptunium genome. Consistent with this observation, H. neptunium swarmer cells did not respond to any chemotactic stimuli that were tested, which suggests that H. neptunium motility is a random dispersal mechanism for swarmer cells rather than a stimulus-controlled navigation system for locating specific environments. In addition to providing insights into bacterial development, the H. neptunium genome will provide an important resource for the study of other interesting biological processes including chromosome segregation, polar growth, and cell aging.
ESTHER : Badger_2006_J.Bacteriol_188_6841
PubMedSearch : Badger_2006_J.Bacteriol_188_6841
PubMedID: 16980487
Gene_locus related to this paper: hypna-q0bwt8 , hypna-q0bwv5 , hypna-q0bww7 , hypna-q0bxb2 , hypna-q0bxr5 , hypna-q0by84 , hypna-q0byl3 , hypna-q0bz23 , hypna-q0bzi5 , hypna-q0c0f7 , hypna-q0c0f8 , hypna-q0c2v8 , hypna-q0c2w1 , hypna-q0c2w4 , hypna-q0c3g0 , hypna-q0c4j0 , hypna-q0c4n1 , hypna-q0c4q9 , hypna-q0c4v5 , hypna-q0c386 , hypna-q0c539 , hypna-q0c611

Title : The psychrophilic lifestyle as revealed by the genome sequence of Colwellia psychrerythraea 34H through genomic and proteomic analyses - Methe_2005_Proc.Natl.Acad.Sci.U.S.A_102_10913
Author(s) : Methe BA , Nelson KE , Deming JW , Momen B , Melamud E , Zhang X , Moult J , Madupu R , Nelson WC , Dodson RJ , Brinkac LM , Daugherty SC , Durkin AS , DeBoy RT , Kolonay JF , Sullivan SA , Zhou L , Davidsen TM , Wu M , Huston AL , Lewis M , Weaver B , Weidman JF , Khouri H , Utterback TR , Feldblyum TV , Fraser CM
Ref : Proc Natl Acad Sci U S A , 102 :10913 , 2005
Abstract : The completion of the 5,373,180-bp genome sequence of the marine psychrophilic bacterium Colwellia psychrerythraea 34H, a model for the study of life in permanently cold environments, reveals capabilities important to carbon and nutrient cycling, bioremediation, production of secondary metabolites, and cold-adapted enzymes. From a genomic perspective, cold adaptation is suggested in several broad categories involving changes to the cell membrane fluidity, uptake and synthesis of compounds conferring cryotolerance, and strategies to overcome temperature-dependent barriers to carbon uptake. Modeling of three-dimensional protein homology from bacteria representing a range of optimal growth temperatures suggests changes to proteome composition that may enhance enzyme effectiveness at low temperatures. Comparative genome analyses suggest that the psychrophilic lifestyle is most likely conferred not by a unique set of genes but by a collection of synergistic changes in overall genome content and amino acid composition.
ESTHER : Methe_2005_Proc.Natl.Acad.Sci.U.S.A_102_10913
PubMedSearch : Methe_2005_Proc.Natl.Acad.Sci.U.S.A_102_10913
PubMedID: 16043709
Gene_locus related to this paper: colp3-q47uc4 , colp3-q47uc7 , colp3-q47ut6 , colp3-q47ut7 , colp3-q47v81 , colp3-q47vk3 , colp3-q47vy9 , colp3-q47w94 , colp3-q47wj4 , colp3-q47wr2 , colp3-q47ws7 , colp3-q47ws9 , colp3-q47x08 , colp3-q47x48 , colp3-q47yd5 , colp3-q47ye2 , colp3-q47yq1 , colp3-q47yv1 , colp3-q47za7 , colp3-q47zp5 , colp3-q48ac9 , colp3-q48aj8 , colp3-q48aq9 , colp3-q480e1 , colp3-q481z4 , colp3-q482y8 , colp3-q484d8 , colp3-q484k3 , colp3-q485e4 , colp3-q485t4 , colp3-q486t5 , colp3-q487b7 , colp3-q487s5 , colp3-q488a3 , colp3-q488d2 , colp3-q488d8 , colp3-q488e7 , colp3-q488f8 , colp3-q488p2 , colp3-q489b1 , colp3-q489i6 , colp3-q47ya3

Title : Genome analysis of multiple pathogenic isolates of Streptococcus agalactiae: implications for the microbial pan-genome - Tettelin_2005_Proc.Natl.Acad.Sci.U.S.A_102_13950
Author(s) : Tettelin H , Masignani V , Cieslewicz MJ , Donati C , Medini D , Ward NL , Angiuoli SV , Crabtree J , Jones AL , Durkin AS , DeBoy RT , Davidsen TM , Mora M , Scarselli M , Margarit y Ros I , Peterson JD , Hauser CR , Sundaram JP , Nelson WC , Madupu R , Brinkac LM , Dodson RJ , Rosovitz MJ , Sullivan SA , Daugherty SC , Haft DH , Selengut J , Gwinn ML , Zhou L , Zafar N , Khouri H , Radune D , Dimitrov G , Watkins K , O'Connor KJ , Smith S , Utterback TR , White O , Rubens CE , Grandi G , Madoff LC , Kasper DL , Telford JL , Wessels MR , Rappuoli R , Fraser CM
Ref : Proc Natl Acad Sci U S A , 102 :13950 , 2005
Abstract : The development of efficient and inexpensive genome sequencing methods has revolutionized the study of human bacterial pathogens and improved vaccine design. Unfortunately, the sequence of a single genome does not reflect how genetic variability drives pathogenesis within a bacterial species and also limits genome-wide screens for vaccine candidates or for antimicrobial targets. We have generated the genomic sequence of six strains representing the five major disease-causing serotypes of Streptococcus agalactiae, the main cause of neonatal infection in humans. Analysis of these genomes and those available in databases showed that the S. agalactiae species can be described by a pan-genome consisting of a core genome shared by all isolates, accounting for approximately 80% of any single genome, plus a dispensable genome consisting of partially shared and strain-specific genes. Mathematical extrapolation of the data suggests that the gene reservoir available for inclusion in the S. agalactiae pan-genome is vast and that unique genes will continue to be identified even after sequencing hundreds of genomes.
ESTHER : Tettelin_2005_Proc.Natl.Acad.Sci.U.S.A_102_13950
PubMedSearch : Tettelin_2005_Proc.Natl.Acad.Sci.U.S.A_102_13950
PubMedID: 16172379
Gene_locus related to this paper: strag-ESTA , strag-GBS0040 , strag-GBS0107 , strag-GBS1828 , strag-pepx , strag-q3dah6 , strag-SAG0246 , strag-SAG0383 , strag-SAG0679 , strag-SAG0680 , strag-SAG0785 , strag-SAG0912 , strag-SAG1562 , strag-SAG2132

Title : The genome sequence of the anaerobic, sulfate-reducing bacterium Desulfovibrio vulgaris Hildenborough - Heidelberg_2004_Nat.Biotechnol_22_554
Author(s) : Heidelberg JF , Seshadri R , Haveman SA , Hemme CL , Paulsen IT , Kolonay JF , Eisen JA , Ward N , Methe B , Brinkac LM , Daugherty SC , DeBoy RT , Dodson RJ , Durkin AS , Madupu R , Nelson WC , Sullivan SA , Fouts D , Haft DH , Selengut J , Peterson JD , Davidsen TM , Zafar N , Zhou L , Radune D , Dimitrov G , Hance M , Tran K , Khouri H , Gill J , Utterback TR , Feldblyum TV , Wall JD , Voordouw G , Fraser CM
Ref : Nat Biotechnol , 22 :554 , 2004
Abstract : Desulfovibrio vulgaris Hildenborough is a model organism for studying the energy metabolism of sulfate-reducing bacteria (SRB) and for understanding the economic impacts of SRB, including biocorrosion of metal infrastructure and bioremediation of toxic metal ions. The 3,570,858 base pair (bp) genome sequence reveals a network of novel c-type cytochromes, connecting multiple periplasmic hydrogenases and formate dehydrogenases, as a key feature of its energy metabolism. The relative arrangement of genes encoding enzymes for energy transduction, together with inferred cellular location of the enzymes, provides a basis for proposing an expansion to the 'hydrogen-cycling' model for increasing energy efficiency in this bacterium. Plasmid-encoded functions include modification of cell surface components, nitrogen fixation and a type-III protein secretion system. This genome sequence represents a substantial step toward the elucidation of pathways for reduction (and bioremediation) of pollutants such as uranium and chromium and offers a new starting point for defining this organism's complex anaerobic respiration.
ESTHER : Heidelberg_2004_Nat.Biotechnol_22_554
PubMedSearch : Heidelberg_2004_Nat.Biotechnol_22_554
PubMedID: 15077118
Gene_locus related to this paper: desvh-q72b36 , desvh-q72ed6 , desvh-q728i3 , desvh-q729w4 , desvh-q72b15

Title : Comparison of the genome of the oral pathogen Treponema denticola with other spirochete genomes - Seshadri_2004_Proc.Natl.Acad.Sci.U.S.A_101_5646
Author(s) : Seshadri R , Myers GS , Tettelin H , Eisen JA , Heidelberg JF , Dodson RJ , Davidsen TM , DeBoy RT , Fouts DE , Haft DH , Selengut J , Ren Q , Brinkac LM , Madupu R , Kolonay J , Durkin SA , Daugherty SC , Shetty J , Shvartsbeyn A , Gebregeorgis E , Geer K , Tsegaye G , Malek J , Ayodeji B , Shatsman S , McLeod MP , Smajs D , Howell JK , Pal S , Amin A , Vashisth P , McNeill TZ , Xiang Q , Sodergren E , Baca E , Weinstock GM , Norris SJ , Fraser CM , Paulsen IT
Ref : Proc Natl Acad Sci U S A , 101 :5646 , 2004
Abstract : We present the complete 2,843,201-bp genome sequence of Treponema denticola (ATCC 35405) an oral spirochete associated with periodontal disease. Analysis of the T. denticola genome reveals factors mediating coaggregation, cell signaling, stress protection, and other competitive and cooperative measures, consistent with its pathogenic nature and lifestyle within the mixed-species environment of subgingival dental plaque. Comparisons with previously sequenced spirochete genomes revealed specific factors contributing to differences and similarities in spirochete physiology as well as pathogenic potential. The T. denticola genome is considerably larger in size than the genome of the related syphilis-causing spirochete Treponema pallidum. The differences in gene content appear to be attributable to a combination of three phenomena: genome reduction, lineage-specific expansions, and horizontal gene transfer. Genes lost due to reductive evolution appear to be largely involved in metabolism and transport, whereas some of the genes that have arisen due to lineage-specific expansions are implicated in various pathogenic interactions, and genes acquired via horizontal gene transfer are largely phage-related or of unknown function.
ESTHER : Seshadri_2004_Proc.Natl.Acad.Sci.U.S.A_101_5646
PubMedSearch : Seshadri_2004_Proc.Natl.Acad.Sci.U.S.A_101_5646
PubMedID: 15064399
Gene_locus related to this paper: trede-q73j01 , trede-q73kf5 , trede-q73kp3 , trede-q73ks1 , trede-q73nf8 , trede-q73qt5 , trede-q73qv0 , trede-q73ra4 , trede-q73ri8 , trede-Q93EK3 , trede-TDE0521

Title : Genome of Geobacter sulfurreducens: metal reduction in subsurface environments - Methe_2003_Science_302_1967
Author(s) : Methe BA , Nelson KE , Eisen JA , Paulsen IT , Nelson W , Heidelberg JF , Wu D , Wu M , Ward N , Beanan MJ , Dodson RJ , Madupu R , Brinkac LM , Daugherty SC , DeBoy RT , Durkin AS , Gwinn M , Kolonay JF , Sullivan SA , Haft DH , Selengut J , Davidsen TM , Zafar N , White O , Tran B , Romero C , Forberger HA , Weidman J , Khouri H , Feldblyum TV , Utterback TR , Van Aken SE , Lovley DR , Fraser CM
Ref : Science , 302 :1967 , 2003
Abstract : The complete genome sequence of Geobacter sulfurreducens, a delta-proteobacterium, reveals unsuspected capabilities, including evidence of aerobic metabolism, one-carbon and complex carbon metabolism, motility, and chemotactic behavior. These characteristics, coupled with the possession of many two-component sensors and many c-type cytochromes, reveal an ability to create alternative, redundant, electron transport networks and offer insights into the process of metal ion reduction in subsurface environments. As well as playing roles in the global cycling of metals and carbon, this organism clearly has the potential for use in bioremediation of radioactive metals and in the generation of electricity.
ESTHER : Methe_2003_Science_302_1967
PubMedSearch : Methe_2003_Science_302_1967
PubMedID: 14671304
Gene_locus related to this paper: geosl-q74a54 , geosl-q74ac8 , geosl-q74eb1 , geosl-q747u4 , geosl-q747v8 , geosl-q749w4

Title : Complete genome sequence of the Q-fever pathogen Coxiella burnetii - Seshadri_2003_Proc.Natl.Acad.Sci.U.S.A_100_5455
Author(s) : Seshadri R , Paulsen IT , Eisen JA , Read TD , Nelson KE , Nelson WC , Ward NL , Tettelin H , Davidsen TM , Beanan MJ , DeBoy RT , Daugherty SC , Brinkac LM , Madupu R , Dodson RJ , Khouri HM , Lee KH , Carty HA , Scanlan D , Heinzen RA , Thompson HA , Samuel JE , Fraser CM , Heidelberg JF
Ref : Proc Natl Acad Sci U S A , 100 :5455 , 2003
Abstract : The 1,995,275-bp genome of Coxiella burnetii, Nine Mile phase I RSA493, a highly virulent zoonotic pathogen and category B bioterrorism agent, was sequenced by the random shotgun method. This bacterium is an obligate intracellular acidophile that is highly adapted for life within the eukaryotic phagolysosome. Genome analysis revealed many genes with potential roles in adhesion, invasion, intracellular trafficking, host-cell modulation, and detoxification. A previously uncharacterized 13-member family of ankyrin repeat-containing proteins is implicated in the pathogenesis of this organism. Although the lifestyle and parasitic strategies of C. burnetii resemble that of Rickettsiae and Chlamydiae, their genome architectures differ considerably in terms of presence of mobile elements, extent of genome reduction, metabolic capabilities, and transporter profiles. The presence of 83 pseudogenes displays an ongoing process of gene degradation. Unlike other obligate intracellular bacteria, 32 insertion sequences are found dispersed in the chromosome, indicating some plasticity in the C. burnetii genome. These analyses suggest that the obligate intracellular lifestyle of C. burnetii may be a relatively recent innovation.
ESTHER : Seshadri_2003_Proc.Natl.Acad.Sci.U.S.A_100_5455
PubMedSearch : Seshadri_2003_Proc.Natl.Acad.Sci.U.S.A_100_5455
PubMedID: 12704232
Gene_locus related to this paper: coxbu-BIOH , coxbu-CBU0752 , coxbu-CBU1119 , coxbu-CBU1225 , coxbu-CBU1529 , coxbu-CBU1769 , coxbu-CBU1975