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You searched for: Journal Proceedings of the National Academy of Sciences of the United States of America Remove constraint Journal: Proceedings of the National Academy of Sciences of the United States of America Publication Year 2005 Remove constraint Publication Year: 2005 Source 2005 v.102 no.51 Remove constraint Source: 2005 v.102 no.51
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1. A high-resolution whole-genome cattle-human comparative map reveals details of mammalian chromosome evolution

Author:
Everts-van der Wind, A.; Larkin, D.M.; Green, C.A.; Elliott, J.S.; Olmstead, C.A.; Chiu, R.; Schein, J.E.; Marra, M.A.; Womack, J.E.; Lewin, H.A.
Source:
Proceedings of the National Academy of Sciences of the United States of America 2005 v.102 no.51 pp. 18526-18531
ISSN:
0027-8424
Subject:
cattle; humans; chromosome mapping; genome; genomics; genetic markers; bacterial artificial chromosomes; centromeres; telomeres
Abstract:
... Approximately 3,000 cattle bacterial artificial chromosome (BAC)-end sequences were added to the Illinois-Texas 5,000-rad RH (RH, radiation hybrid) map. The BAC-end sequences selected for mapping are approximately equal to 1 Mbp apart on the human chromosomes as determined by blastn analysis. The map has 3,484 ordered markers, of which 3,204 are anchored in the human genome. Two hundred-and-one ho ...
DOI:
10.1073/pnas.0509285102
PubMed:
16339895
PubMed Central:
PMC1317968

2. An Asian origin for a 10,000-year-old domesticated plant in the Americas

Author:
Erickson, D.L.; Smith, B.D.; Clarke, A.C.; Sandweiss, D.H.; Tuross, N.
Source:
Proceedings of the National Academy of Sciences of the United States of America 2005 v.102 no.51 pp. 18315-18320
ISSN:
0027-8424
Subject:
landraces; chloroplast DNA; plant morphology; genotype; provenance; domestication; radiocarbon dating; Lagenaria siceraria; genetic markers; single nucleotide polymorphism; United States; Mexico; Peru
Abstract:
... New genetic and archaeological approaches have substantially improved our understanding of the transition to agriculture, a major turning point in human history that began 10,000-5,000 years ago with the independent domestication of plants and animals in eight world regions. In the Americas, however, understanding the initial domestication of New World species has long been complicated by the earl ...
DOI:
10.1073/pnas.0509279102
PubMed:
16352716
PubMed Central:
PMC1311910

3. A regulator of nutritional copper signaling in Chlamydomonas is an SBP domain protein that recognizes the GTAC core of copper response element

Author:
Kropat, J.; Tottey, S.; Birkenbihl, R.P.; Depege, N.; Huijser, P.; Merchant, S.
Source:
Proceedings of the National Academy of Sciences of the United States of America 2005 v.102 no.51 pp. 18730-18735
ISSN:
0027-8424
Subject:
transcription factors; messenger RNA; copper; zinc; nutrient availability; signal transduction; amino acid sequences; gene expression; Chlamydomonas; genes; binding sites; promoter regions
Abstract:
... The CRR1 (Copper Response Regulator) locus, required for both activating and repressing target genes of a copper- and hypoxia-sensing pathway in Chlamydomonas, encodes a 1,232-residue candidate transcription factor with a plant-specific DNA-binding domain named SBP, ankyrin repeats, and a C-terminal Cys-rich region, with similarity to a Drosophila metallothionein. The recombinant SBP domain of Crr ...
DOI:
10.1073/pnas.0507693102
PubMed:
16352720
PubMed Central:
PMC1311908

4. Bacillus thuringiensis subsp. israelensis Cyt1Aa synergizes Cry11Aa toxin by functioning as a membrane-bound receptor

Author:
Perez, C.; Fernandez, L.E.; Sun, J.; Folch, J.L.; Gill, S.S.; Soberon, M.; Bravo, A.
Source:
Proceedings of the National Academy of Sciences of the United States of America 2005 v.102 no.51 pp. 18303-18308
ISSN:
0027-8424
Subject:
Bacillus thuringiensis subsp. israelensis; insecticidal proteins; crystal proteins; binding capacity; protein-protein interactions; receptors; brush border membrane vesicles; midgut; point mutation; binding sites; Aedes aegypti; bacterial insecticides; insecticidal properties; synergism
Abstract:
... Bacillus thuringiensis subsp. israelensis produces crystal proteins, Cry (4Aa, 4Ba, 10Aa, and 11Aa) and Cyt (1Aa and 2Ba) proteins, toxic to mosquito vectors of human diseases. Cyt1Aa overcomes insect resistance to Cry11Aa and Cry4 toxins and synergizes the toxicity of these toxins. However, the molecular mechanism of synergism remains unsolved. Here, we provide evidence that Cyt1Aa functions as a ...
DOI:
10.1073/pnas.0505494102
PubMed:
16339907
PubMed Central:
PMC1317914

5. Diffusion and scaling during early embryonic pattern formation

Author:
Gregor, T.; Bialek, W.; de Ruyter van Steveninck, R.R.; Tank, D.W.; Wieschaus, E.F.
Source:
Proceedings of the National Academy of Sciences of the United States of America 2005 v.102 no.51 pp. 18403-18407
ISSN:
0027-8424
Subject:
transcription factors; spatial distribution; Lucilia sericata; embryo (animal); diffusion; cytoplasm; embryogenesis; fluorescent antibody technique; Drosophila melanogaster
Abstract:
... Development of spatial patterns in multicellular organisms depends on gradients in the concentration of signaling molecules that control gene expression. In the Drosophila embryo, Bicoid (Bcd) morphogen controls cell fate along 70% of the anteroposterior axis but is translated from mRNA localized at the anterior pole. Gradients of Bcd and other morphogens are thought to arise through diffusion, bu ...
DOI:
10.1073/pnas.0509483102
PubMed:
16352710
PubMed Central:
PMC1311912

6. Pinpointing and preventing imminent extinctions

Author:
Ricketts, T.H.; Dinerstein, E.; Boucher, T.; Brooks, T.M.; Butchart, S.H.M.; Hoffmann, M.; Lamoreux, J.F.; Morrison, J.; Parr, M.; Pilgrim, J.D.
Source:
Proceedings of the National Academy of Sciences of the United States of America 2005 v.102 no.51 pp. 18497-18501
ISSN:
0027-8424
Subject:
habitat destruction; endangered species; reptiles; amphibians; wildlife habitats; extinction; wild birds; mammals; biodiversity; conifers; wildlife
Abstract:
... Slowing rates of global biodiversity loss requires preventing species extinctions. Here we pinpoint centers of imminent extinction, where highly threatened species are confined to single sites. Within five globally assessed taxa (i.e., mammals, birds, selected reptiles, amphibians, and conifers), we find 794 such species, three times the number recorded as having gone extinct since 1500. These spe ...
DOI:
10.1073/pnas.0509060102
PubMed:
16344485
PubMed Central:
PMC1311739

7. RHL1 is an essential component of the plant DNA topoisomerase VI complex and is required for ploidy-dependent cell growth

Author:
Sugimoto-Shirasu, K.; Roberts, G.R.; Stacey, N.J.; McCann, M.C.; Maxwell, A.; Roberts, K.
Source:
Proceedings of the National Academy of Sciences of the United States of America 2005 v.102 no.51 pp. 18736-18741
ISSN:
0027-8424
Subject:
Arabidopsis thaliana; mitosis; phenotype; DNA replication; cell growth; DNA; genes; mutants; DNA topoisomerase; binding capacity
Abstract:
... How cells achieve their final sizes is a pervasive biological question. One strategy to increase cell size is for the cell to amplify its chromosomal DNA content through endoreduplication cycles. Although endoreduplication is widespread in eukaryotes, we know very little about its molecular mechanisms. Successful progression of the endoreduplication cycle in Arabidopsis requires a plant homologue ...
DOI:
10.1073/pnas.0505883102
PubMed:
16339310
PubMed Central:
PMC1309048

8. Shoot circumnutation and winding movements require gravisensing cells

Author:
Kitazawa, D.; Hatakeda, Y.; Kamada, M.; Fujii, N.; Miyazawa, Y.; Hoshino, A.; Iida, S.; Fukaki, H.; Morita, M.T.; Tasaka, M.
Source:
Proceedings of the National Academy of Sciences of the United States of America 2005 v.102 no.51 pp. 18742-18747
ISSN:
0027-8424
Subject:
plant growth; Ipomoea nil; complementary DNA; gravitropism; plant proteins; amino acid sequences; nutation; genes; mutants; endodermis; nucleotide sequences; shoots
Abstract:
... Circumnutation and winding in plants are universal growth movements that allow plants to survive despite their sessile nature. However, the detailed molecular mechanisms controlling these phenomena remain unclear. We previously found that a gravitropic mutant of Japanese morning glory (Pharbitis nil or Ipomoea nil), Shidare-asagao (weeping), is defective not only in circumnutation but also in the ...
DOI:
10.1073/pnas.0504617102
PubMed:
16339910
PubMed Central:
PMC1310508

9. Slow growth rates of Amazonian trees: Consequences for carbon cycling

Author:
Vieira, S.; Trumbore, S.; Camargo, P.B.; Selhorst, D.; Chambers, J.Q.; Higuchi, N.; Martinelli, L.A.
Source:
Proceedings of the National Academy of Sciences of the United States of America 2005 v.102 no.51 pp. 18502-18507
ISSN:
0027-8424
Subject:
tropical forests; forest trees; tree growth; radiocarbon dating; allometry; tree age; carbon; biogeochemical cycles; Brazil; Amazonia
Abstract:
... Quantifying age structure and tree growth rate of Amazonian forests is essential for understanding their role in the carbon cycle. Here, we use radiocarbon dating and direct measurement of diameter increment to document unexpectedly slow growth rates for trees from three locations spanning the Brazilian Amazon basin. Central Amazon trees, averaging only approximately equal to 1mm/year diameter inc ...
DOI:
10.1073/pnas.0505966102
PubMed:
16339903
PubMed Central:
PMC1310511