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  • *Phylogeny  (1)
  • *Terminator Regions, Genetic  (1)
  • American Association for the Advancement of Science (AAAS)  (2)
  • American Institute of Physics
  • Paleontological Society
Collection
Publisher
  • American Association for the Advancement of Science (AAAS)  (2)
  • American Institute of Physics
  • Paleontological Society
Years
  • 1
    Publication Date: 2001-05-12
    Description: To test the hypotheses of modern human origin in East Asia, we sampled 12,127 male individuals from 163 populations and typed for three Y chromosome biallelic markers (YAP, M89, and M130). All the individuals carried a mutation at one of the three sites. These three mutations (YAP+, M89T, and M130T) coalesce to another mutation (M168T), which originated in Africa about 35,000 to 89,000 years ago. Therefore, the data do not support even a minimal in situ hominid contribution in the origin of anatomically modern humans in East Asia.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ke, Y -- Su, B -- Song, X -- Lu, D -- Chen, L -- Li, H -- Qi, C -- Marzuki, S -- Deka, R -- Underhill, P -- Xiao, C -- Shriver, M -- Lell, J -- Wallace, D -- Wells, R S -- Seielstad, M -- Oefner, P -- Zhu, D -- Jin, J -- Huang, W -- Chakraborty, R -- Chen, Z -- Jin, L -- New York, N.Y. -- Science. 2001 May 11;292(5519):1151-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉State Key Laboratory of Genetic Engineering, Institute of Genetics, School of Life Sciences, Fudan University, 220 Handan Road, Shanghai, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11349147" target="_blank"〉PubMed〈/a〉
    Keywords: Africa/ethnology ; Alleles ; Asia ; Female ; Gene Frequency/genetics ; Haplotypes/genetics ; Humans ; Male ; Mutation/genetics ; Pacific Islands ; *Phylogeny ; Polymorphism, Genetic/genetics ; Population Density ; Y Chromosome/*genetics
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 1994-11-04
    Description: Transcription terminators recognized by several RNA polymerases include a DNA segment encoding uridine-rich RNA and, for bacterial RNA polymerase, a hairpin loop located immediately upstream. Here, mutationally altered Escherichia coli RNA polymerase enzymes that have different termination efficiencies were used to show that the extent of transcription through the uridine-rich encoding segment is controlled by the substrate concentration of nucleoside triphosphate. This result implies that the rate of elongation determines the probability of transcript release. Moreover, the position of release sites suggests an important spatial relation between the RNA hairpin and the boundary of the terminator.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McDowell, J C -- Roberts, J W -- Jin, D J -- Gross, C -- New York, N.Y. -- Science. 1994 Nov 4;266(5186):822-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Biochemistry, Molecular and Cell Biology, Cornell University, Ithaca, NY 14853.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7526463" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA-Directed RNA Polymerases/genetics/*metabolism ; Escherichia coli/enzymology/genetics ; Molecular Sequence Data ; Mutation ; Nucleic Acid Conformation ; Nucleotides/metabolism ; RNA, Bacterial/*genetics/metabolism ; *Terminator Regions, Genetic ; *Transcription, Genetic ; Uridine Triphosphate/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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