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Clémentine Gibard on Muck Rack

Clémentine Gibard

As seen in: Color Research & Application, Nature
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Articles

Prebiotic Phosphorylation and Concomitant Oligomerization of Deoxynucleosides to form DNA

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By Eddy I. Jiménez, Clémentine Gibard, Ramanarayanan Krishnamurthy
| Color Research & Application Verified
Research Article PDF ShareShare Abstract Recent demonstrations of RNA–DNA chimeras (RDNA) enabling RNA and DNA replication, coupled with prebiotic co‐synthesis of deoxyribo‐ and ribo‐nucleotides, have resurrected the hypothesis of co‐emergence of RNA and DNA. As further support, we show that diamidophosphate (DAP) with 2‐aminoimidazole (amido)phosphorylates and oligomerizes deoxynucleosides to form DNA—under conditions similar to those of ribonucleosides.
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Geochemical Sources and Availability of Amidophosphates on the Early Earth

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By Clémentine Gibard, Ramanarayanan Krishnamurthy, Matthew A. Pasek, Terence Kee
| Wiley Online Library Verified
Communication Geochemical Sources and Availability of Amidophosphates on the Early Earth Ramanarayanan Krishnamurthy Corresponding Author E-mail address: rkrishna@scripps.edu The Scripps Research Institute, Chemistry snd The Skaggs Institute For Chemical Biology, 10550 North Torrey Pines Rd, MB-16, 92037 La Jolla, UNITED STATES Search for more papers by this author PDF PDF Share Abstract Phosphorylation of (pre)biotically relevant molecules in aqueous medium leading to sugar‐phosphates,...
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Prebiotic phosphorylation of 2-thiouridine provides either nucleotides or DNA building blocks via photoreduction

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By Jianfeng Xu, Nicholas J. Green, Clémentine Gibard, Ramanarayanan Krishnamurthy
| Nature Verified
Abstract Breakthroughs in the study of the origin of life have demonstrated how some of the building blocks essential to biology could have been formed under various primordial scenarios, and could therefore have contributed to the chemical evolution of life. Missing building blocks are then sometimes inferred to be products of primitive biosynthesis, which can stretch the limits of plausibility.
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