An integrated, structure- and energy-based view of the genetic code.
An integrated, structure- and energy-based view of the genetic code.
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DOI:
10.1093/nar/gkw608
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发表时间:
2016-09-30
影响因子:
14.9
通讯作者:
Westhof E
中科院分区:
文献类型:
--
作者:
Grosjean H;Westhof E
The principles of mRNA decoding are conserved among all extant life forms. We present an integrative view of all the interaction networks between mRNA, tRNA and rRNA: the intrinsic stability of codon–anticodon duplex, the conformation of the anticodon hairpin, the presence of modified nucleotides, the occurrence of non-Watson–Crick pairs in the codon–anticodon helix and the interactions with bases of rRNA at the A-site decoding site. We derive a more information-rich, alternative representation of the genetic code, that is circular with an unsymmetrical distribution of codons leading to a clear segregation between GC-rich 4-codon boxes and AU-rich 2:2-codon and 3:1-codon boxes. All tRNA sequence variations can be visualized, within an internal structural and energy framework, for each organism, and each anticodon of the sense codons. The multiplicity and complexity of nucleotide modifications at positions 34 and 37 of the anticodon loop segregate meaningfully, and correlate well with the necessity to stabilize AU-rich codon–anticodon pairs and to avoid miscoding in split codon boxes. The evolution and expansion of the genetic code is viewed as being originally based on GC content with progressive introduction of A/U together with tRNA modifications. The representation we present should help the engineering of the genetic code to include non-natural amino acids.
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影响因子:
2.9
作者:
Chen JL;Dishler AL;Kennedy SD;Yildirim I;Liu B;Turner DH;Serra MJ
通讯作者:
Serra MJ
DOI:
10.3390/life5041610
发表时间:
2015-11-12
期刊:
Life (Basel, Switzerland)
影响因子:
--
作者:
Bezerra AR;Guimarães AR;Santos MA
通讯作者:
Santos MA
影响因子:
5.6
作者:
CRICK, FHC
通讯作者:
CRICK, FHC
影响因子:
5.6
作者:
Auffinger, P;Westhof, E
通讯作者:
Westhof, E
影响因子:
1.6
作者:
Angel Jimenez-Montano, Miguel
通讯作者:
Angel Jimenez-Montano, Miguel