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Focus

Focus on RNA

RNA has occupied a pivotal position in the 'central dogma' of molecular biology, which states that information flows from DNA through RNA to proteins. In this issue, we feature a collection of articles that discuss the diverse functional roles of RNA in biological systems and highlight recent discoveries in RNA chemical biology, including advances in transcription, RNA structural biology, RNA interference and RNA engineering.

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In This Issue

Focus on RNA

In This Issue pv

doi:10.1038/nchembio0107-v


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Editorial

Focus on RNA

A windfall for RNA p1

doi:10.1038/nchembio0107-1

Two 2006 Nobel prizes reflect the central role of RNA in gene regulation and emphasize the interplay of discoveries in chemistry and biology.


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Commentaries

Focus on RNA

Chemical crosshairs on the central dogma pp2 - 7

Aseem Z Ansari

doi:10.1038/nchembio0107-2

As cellular machines and processes that regulate the flow of genomic information have come into sharper focus, a new level of chemical control has become possible. The scope of such chemical intervention extends from the mechanistic dissection of biochemical processes in living cells to the targeted control of gene networks and cell fate.


Focus on RNA

RNA learns from antisense pp8 - 11

David R Corey

doi:10.1038/nchembio0107-8

RNA interference provides powerful tools for controlling gene expression in cultured cells. Whether RNAi will provide similarly powerful drugs is unknown. Lessons from development of antisense oligonucleotide drugs may provide some clues.


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Elements

Focus on RNA

RNA at Santa Cruz p13

Mirella Bucci

doi:10.1038/nchembio0107-13

Nestled in an atmosphere that resembles a national park, the Center for Molecular Biology of RNA at the University of California, Santa Cruz is fulfilling Harry Noller's vision of bringing together multidisciplinary researchers to solve problems that range from finding obscure RNAs to understanding the origin of life.


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News and Views

Fighting toxic copper in a bacterial pathogen pp15 - 16

Carrie M Wilmot

doi:10.1038/nchembio0107-15

A copper-responsive transcriptional repressor with an unusual DNA binding fold has been identified that represents the founding member of an extensive new family of bacterial transcriptional regulators.

See also: Article by Liu et al.


'Turning on' riboswitches to their antibacterial potential pp16 - 17

Charles R Lea & Joseph A Piccirilli

doi:10.1038/nchembio0107-16

Drug-resistant bacteria are a growing challenge to world health, and new approaches to antibiotic development are needed. Riboswitches, regulatory elements of mRNA, are shown to be a potential new target for antibiotic drugs.

See also: Letter by Blount et al.


Shining a light on protein expression in living organisms pp17 - 18

Francine B Perler

doi:10.1038/nchembio0107-17

Imagine being able to rapidly switch on your favorite protein at a specified concentration, location and time in a live multicellular organism. Sounds like a dream? Recent advances in controlling protein splicing with small molecules are close to making it a reality.

See also: Letter by Schwartz et al.


Are we there yet? pp19 - 20

William C Merrick

doi:10.1038/nchembio0107-19

After years of waiting, the road map for the path of the mRNA on the ribosome with its associated tRNAs has been completed. In contrast to the amino-acid-coding nucleotides of the body of the mRNA, the Shine-Delgarno region appears to take an unexpected turn on the surface of the 30S subunit in the transition from the initiation complex to the postinitiation complex.


Sensing RNA virus infections pp20 - 21

Christopher F Basler & Adolfo García-Sastre

doi:10.1038/nchembio0107-20

RIG-I is an RNA helicase that senses viral infections and triggers innate and adaptive immune mechanisms. Recent studies have identified RNAs bearing 5'-triphosphates as ligands of RIG-I and have suggested a mechanism for how RIG-I distinguishes viral RNA from host RNA.


Research Highlights p22

doi:10.1038/nchembio0107-22


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Perspectives

Focus on RNA

Synthetic RNA circuits pp23 - 28

Eric A Davidson & Andrew D Ellington

doi:10.1038/nchembio846


Focus on RNA

Natural expansion of the genetic code pp29 - 35

Alexandre Ambrogelly, Sotiria Palioura & Dieter Söll

doi:10.1038/nchembio847


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Review

Focus on RNA

Slicer and the Argonautes pp36 - 43

Niraj H Tolia & Leemor Joshua-Tor

doi:10.1038/nchembio848


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Letters



Forward chemical genetic approach identifies new role for GAPDH in insulin signaling pp55 - 59

Jaeki Min, Yun Kyung Kim, Patricia G Cipriani, Mira Kang, Sonya M Khersonsky, Daniel P Walsh, Ji-Young Lee, Sherry Niessen, John R Yates, III, Kristin Gunsalus, Fabio Piano & Young-Tae Chang

doi:10.1038/nchembio833

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Article

CsoR is a novel Mycobacterium tuberculosis copper-sensing transcriptional regulator pp60 - 68

Tong Liu, Arati Ramesh, Zhen Ma, Sarah K Ward, Limei Zhang, Graham N George, Adel M Talaat, James C Sacchettini & David P Giedroc

doi:10.1038/nchembio844

no alt info

See also: News and Views by Wilmot


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