1nao
From Proteopedia
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'''SOLUTION STRUCTURE OF AN RNA 2'-O-METHYLATED RNA DUPLEX CONTAINING AN RNA/DNA HYBRID SEGMENT AT THE CENTER, NMR, MINIMIZED AVERAGE STRUCTURE''' | '''SOLUTION STRUCTURE OF AN RNA 2'-O-METHYLATED RNA DUPLEX CONTAINING AN RNA/DNA HYBRID SEGMENT AT THE CENTER, NMR, MINIMIZED AVERAGE STRUCTURE''' | ||
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==About this Structure== | ==About this Structure== | ||
| - | + | Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NAO OCA]. | |
==Reference== | ==Reference== | ||
Solution structure of an RNA.2'-O-methylated RNA hybrid duplex containing an RNA.DNA hybrid segment at the center., Nishizaki T, Iwai S, Ohtsuka E, Nakamura H, Biochemistry. 1997 Mar 4;36(9):2577-85. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9054564 9054564] | Solution structure of an RNA.2'-O-methylated RNA hybrid duplex containing an RNA.DNA hybrid segment at the center., Nishizaki T, Iwai S, Ohtsuka E, Nakamura H, Biochemistry. 1997 Mar 4;36(9):2577-85. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9054564 9054564] | ||
| - | [[Category: Protein complex]] | ||
[[Category: Iwai, S.]] | [[Category: Iwai, S.]] | ||
[[Category: Nakamura, H.]] | [[Category: Nakamura, H.]] | ||
[[Category: Nishizaki, T.]] | [[Category: Nishizaki, T.]] | ||
[[Category: Ohtsuka, E.]] | [[Category: Ohtsuka, E.]] | ||
| - | [[Category: | + | [[Category: Dna/rna duplex]] |
| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 02:18:01 2008'' | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | |
Revision as of 23:18, 2 May 2008
SOLUTION STRUCTURE OF AN RNA 2'-O-METHYLATED RNA DUPLEX CONTAINING AN RNA/DNA HYBRID SEGMENT AT THE CENTER, NMR, MINIMIZED AVERAGE STRUCTURE
Overview
The solution structure of an RNA.2'-O-methylated RNA hybrid duplex containing an RNA.DNA hybrid segment at its center, (ggagaugac).(GmUmCmATCTCmCm), where lowercase letters, capital letters, and capital letters with the subscript m are RNA, DNA, and 2'-O-methylated RNA residues, respectively, was determined by observing the NMR spectra and performing the full relaxation matrix refinement. The 2'-O-methylation gives several characteristic features to oligoribonucleotides. In addition, this hybrid duplex is cleaved at a specific position by Escherichia coli ribonuclease HI, and so the role of the tertiary structure during the substrate recognition by the enzyme is of interest. The NOE connectivities among the proton resonances revealed that the duplex was a right handed helix. The 2'-O-methylated RNA segments had a typical C3'-endo conformation, and the 2'-O-methyl groups were directed to the minor groove of this duplex, taking the torsion angles phi (C1'-C2'-02'-CH3) that were all gauche(+). The DNA residues in the central RNA.DNA hybrid duplex formed the C3'-endo conformation, except for the middle thymine residue. No remarkable structural discontinuities were observed around the junction sites at either the 5'- or 3'-end of the DNA. The overall structure was close to the typical A-form duplex.
About this Structure
Full crystallographic information is available from OCA.
Reference
Solution structure of an RNA.2'-O-methylated RNA hybrid duplex containing an RNA.DNA hybrid segment at the center., Nishizaki T, Iwai S, Ohtsuka E, Nakamura H, Biochemistry. 1997 Mar 4;36(9):2577-85. PMID:9054564 Page seeded by OCA on Sat May 3 02:18:01 2008
