2A peptides provide distinct solutions to driving stop-carry on translational recoding.
2A peptides provide distinct solutions to driving stop-carry on translational recoding.
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DOI:
10.1093/nar/gkr1176
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发表时间:
2012-04
影响因子:
14.9
通讯作者:
Brown JD
中科院分区:
文献类型:
--
作者:
Sharma P;Yan F;Doronina VA;Escuin-Ordinas H;Ryan MD;Brown JD
Expression of viral proteins frequently includes non-canonical decoding events (‘recoding’) during translation. ‘2A’ oligopeptides drive one such event, termed ‘stop-carry on’ recoding. Nascent 2A peptides interact with the ribosomal exit tunnel to dictate an unusual stop codon-independent termination of translation at the final Pro codon of 2A. Subsequently, translation ‘reinitiates’ on the same codon, two individual proteins being generated from one open reading frame. Many 2A peptides have been identified, and they have a conserved C-terminal motif. Little similarity is present in the N-terminal portions of these peptides, which might suggest that these amino acids are not important in the 2A reaction. However, mutagenesis indicates that identity of the amino acid at nearly all positions of a single 2A peptide is important for activity. Each 2A may then represent a specific solution for positioning the conserved C-terminus within the peptidyl-transferase centre to promote recoding. Nascent 2A peptide:ribosome interactions are suggested to alter ribosomal fine structure to discriminate against prolyl-tRNAPro and promote termination in the absence of a stop codon. Such structural modifications may account for our observation that replacement of the final Pro codon of 2A with any stop codon both stalls ribosome processivity and inhibits nascent chain release.
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DOI:
10.1126/science.1177662
发表时间:
2009-12-04
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Seidelt B;Innis CA;Wilson DN;Gartmann M;Armache JP;Villa E;Trabuco LG;Becker T;Mielke T;Schulten K;Steitz TA;Beckmann R
通讯作者:
Beckmann R
DOI:
10.1016/j.bbrc.2010.01.073
发表时间:
2010-02-26
影响因子:
3.1
作者:
Ito, Koreaki;Chiba, Shinobu;Pogliano, Kit
通讯作者:
Pogliano, Kit
影响因子:
64.5
作者:
Nakatogawa, H;Ito, K
通讯作者:
Ito, K
影响因子:
5.1
作者:
Ryan, MD;Donnelly, M;Gani, D
通讯作者:
Gani, D
DOI:
10.1007/978-0-387-89382-2_5
发表时间:
2010-01-01
期刊:
RECODING: EXPANSION OF DECODING RULES ENRICHES GENE EXPRESSION
影响因子:
--
作者:
Brown, Jeremy D.;Ryan, Martin D.
通讯作者:
Ryan, Martin D.