Modulation of conformational changes in helix 69 mutants by pseudouridine modifications.
Modulation of conformational changes in helix 69 mutants by pseudouridine modifications.
复制标题
通过假尿苷修饰调节螺旋 69 突变体的构象变化。
DOI:
10.1016/j.bpc.2015.03.001
复制
发表时间:
2015-05
影响因子:
3.8
通讯作者:
Chow, Christine S.
中科院分区:
文献类型:
--
作者:
Jiang, Jun;Kharel, Daya Nidhi;Chow, Christine S.
Centrally located at the ribosomal subunit interface and mRNA tunnel, helix 69 (H69) from 23S rRNA participates in key steps of translation. Ribosome activity is influenced by three pseudouridine modifications, which modulate the structure and conformational behavior of H69. To understand how H69 is affected by the presence of pseudouridine in combination with sequence changes, the biophysical properties of wild-type H69 and representative mutants (A1912G, U1917C, and A1919G) were examined. Results from NMR and circular dichroism spectroscopy indicate that pH-dependent structural changes of wild-type H69 and the chosen mutants are modulated by pseudouridine and loop sequence. The effects of the mutations on global stability of H69 are negligible, however, pseudouridine stabilizes H69 at low pH conditions. Alterations to induced conformational changes of H69 likely result in compromised function, as indicated by previous biological studies.
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影响因子:
3.2
作者:
O'Connor, Michael;Gregory, Steven T.
通讯作者:
Gregory, Steven T.
DOI:
10.1126/science.1202692
发表时间:
2011-05-20
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Dunkle JA;Wang L;Feldman MB;Pulk A;Chen VB;Kapral GJ;Noeske J;Richardson JS;Blanchard SC;Cate JH
通讯作者:
Cate JH
影响因子:
14.9
作者:
Meroueh, M;Grohar, PJ;Chow, CS
通讯作者:
Chow, CS
影响因子:
--
作者:
Liiv, A;Karitkina, D;Remme, J
通讯作者:
Remme, J
影响因子:
4.8
作者:
Liiv, Aivar;O'Connor, Michael
通讯作者:
O'Connor, Michael