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  • 1
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    Structure of yeast poly(A) polymerase alone and in complex with 3'-dATP (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-08-26
    Description: Polyadenylate [poly(A)] polymerase (PAP) catalyzes the addition of a polyadenosine tail to almost all eukaryotic messenger RNAs (mRNAs). The crystal structure of the PAP from Saccharomyces cerevisiae (Pap1) has been solved to 2.6 angstroms, both alone and in complex with 3'-deoxyadenosine triphosphate (3'-dATP). Like other nucleic acid polymerases, Pap1 is composed of three domains that encircle the active site. The arrangement of these domains, however, is quite different from that seen in polymerases that use a template to select and position their incoming nucleotides. The first two domains are functionally analogous to polymerase palm and fingers domains. The third domain is attached to the fingers domain and is known to interact with the single-stranded RNA primer. In the nucleotide complex, two molecules of 3'-dATP are bound to Pap1. One occupies the position of the incoming base, prior to its addition to the mRNA chain. The other is believed to occupy the position of the 3' end of the mRNA primer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bard, J -- Zhelkovsky, A M -- Helmling, S -- Earnest, T N -- Moore, C L -- Bohm, A -- R01 GM57218-01A2/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2000 Aug 25;289(5483):1346-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Boston Biomedical Research Institute, 64 Grove Street, Watertown, MA 02472, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10958780" target="_blank"〉PubMed〈/a〉
    Keywords: Binding Sites ; Catalytic Domain ; Crystallography, X-Ray ; Deoxyadenine Nucleotides/*chemistry/*metabolism ; Hydrogen Bonding ; Manganese/metabolism ; Models, Molecular ; Mutation ; Polynucleotide Adenylyltransferase/*chemistry/genetics/*metabolism ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; RNA/metabolism ; RNA, Messenger/metabolism ; Ribosomal Protein S6 ; Ribosomal Proteins/chemistry/metabolism ; Saccharomyces cerevisiae/*enzymology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    X-ray crystal structures of 70S ribosome functional complexes (1999)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1999-09-25
    Description: Structures of 70S ribosome complexes containing messenger RNA and transfer RNA (tRNA), or tRNA analogs, have been solved by x-ray crystallography at up to 7.8 angstrom resolution. Many details of the interactions between tRNA and the ribosome, and of the packing arrangements of ribosomal RNA (rRNA) helices in and between the ribosomal subunits, can be seen. Numerous contacts are made between the 30S subunit and the P-tRNA anticodon stem-loop; in contrast, the anticodon region of A-tRNA is much more exposed. A complex network of molecular interactions suggestive of a functional relay is centered around the long penultimate stem of 16S rRNA at the subunit interface, including interactions involving the "switch" helix and decoding site of 16S rRNA, and RNA bridges from the 50S subunit.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cate, J H -- Yusupov, M M -- Yusupova, G Z -- Earnest, T N -- Noller, H F -- GM-17129/GM/NIGMS NIH HHS/ -- GM-59140/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1999 Sep 24;285(5436):2095-104.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Molecular Biology of RNA, Sinsheimer Laboratories, University of California, Santa Cruz, CA 95064, USA. cate@wi.mit.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10497122" target="_blank"〉PubMed〈/a〉
    Keywords: Anticodon/metabolism ; Bacterial Proteins/chemistry/metabolism ; Base Pairing ; Binding Sites ; Crystallization ; Crystallography, X-Ray ; Fourier Analysis ; Models, Molecular ; Nucleic Acid Conformation ; Peptide Elongation Factors/metabolism ; Protein Biosynthesis ; Protein Conformation ; RNA, Bacterial/chemistry/metabolism ; RNA, Messenger/chemistry/metabolism ; RNA, Ribosomal/*chemistry/metabolism ; RNA, Ribosomal, 16S/chemistry ; RNA, Ribosomal, 23S/chemistry ; RNA, Transfer/*chemistry/metabolism ; Ribosomal Proteins/chemistry/metabolism ; Ribosomes/*chemistry/*physiology/ultrastructure ; Thermus thermophilus/*chemistry/ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    Crystal structure of the ribosome at 5.5 A resolution (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-04-03
    Description: We describe the crystal structure of the complete Thermus thermophilus 70S ribosome containing bound messenger RNA and transfer RNAs (tRNAs) at 5.5 angstrom resolution. All of the 16S, 23S, and 5S ribosomal RNA (rRNA) chains, the A-, P-, and E-site tRNAs, and most of the ribosomal proteins can be fitted to the electron density map. The core of the interface between the 30S small subunit and the 50S large subunit, where the tRNA substrates are bound, is dominated by RNA, with proteins located mainly at the periphery, consistent with ribosomal function being based on rRNA. In each of the three tRNA binding sites, the ribosome contacts all of the major elements of tRNA, providing an explanation for the conservation of tRNA structure. The tRNAs are closely juxtaposed with the intersubunit bridges, in a way that suggests coupling of the 20 to 50 angstrom movements associated with tRNA translocation with intersubunit movement.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yusupov, M M -- Yusupova, G Z -- Baucom, A -- Lieberman, K -- Earnest, T N -- Cate, J H -- Noller, H F -- New York, N.Y. -- Science. 2001 May 4;292(5518):883-96. Epub 2001 Mar 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Molecular Biology of RNA, Sinsheimer Laboratories, University of California at Santa Cruz, Santa Cruz, CA 95064, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11283358" target="_blank"〉PubMed〈/a〉
    Keywords: Anticodon ; Bacterial Proteins/chemistry/metabolism ; Base Sequence ; Binding Sites ; Crystallography, X-Ray ; Models, Molecular ; Molecular Sequence Data ; Nucleic Acid Conformation ; Protein Biosynthesis ; Protein Conformation ; RNA, Bacterial/chemistry/metabolism ; RNA, Messenger/*chemistry/metabolism ; RNA, Ribosomal/*chemistry/metabolism ; RNA, Transfer/*chemistry/metabolism ; RNA, Transfer, Amino Acid-Specific/*chemistry/metabolism ; Ribosomal Proteins/*chemistry/metabolism ; Ribosomes/*chemistry/metabolism/*ultrastructure ; Thermus thermophilus/chemistry/ultrastructure
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Evidence for a tyrosine protonation change during the primary phototransition of bacteriorhodopsin at low temperature. (1986)
    National Academy of Sciences
    Details
    Publication Date: 1986-01-01
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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