[PDF] Life From An Rna World eBook

Author : Michael Yarus
Publisher : Harvard University Press
Page : 212 pages
File Size : 46,68 MB
Release : 2010
Category : Science
ISBN : 9780674050754

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A majority of evolutionary biologists believe that we now can envision our biological predecessors--not the first, but nearly the first, living beings on Earth. This book is about these vanished forebears. The era between the first rudimentary life on Earth and the appearance of more complex beings is called the RNA world. It is RNA (ribonucleic acid) long believed to be a mere biologic copier and messenger, that offers a glimpse into our ancient predecessors. To describe early RNA creatures, here called "ribocytes" or RNA cells, the author uses basics of molecular biology. He reviews our current understanding of the tree of life, examines the structure of RNA itself, explains the operation of the genetic code, and more. Courting controversy among those who question the role of ribocytes -- citing the chemical fragility of RNA and the uncertainty about the origin of an RNA synthetic apparatus -- he offers a vision of early life on Earth.

Author : Thomas R. Cech
Publisher :
Page : 580 pages
File Size : 44,30 MB
Release : 2018-12-31
Category : Science
ISBN : 9781621822240

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"A Subject Collection from Cold Spring Harbor Perspectives in Biology."

Author : Laura L. Mays Hoopes
Publisher :
Page : 161 pages
File Size : 41,34 MB
Release : 2019
Category : Women scientists
ISBN : 9780359413966

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A dual biography of Joan Steitz and Jennifer Doudna, two women who combined successful home lives with successful careers in science.

Author : James E. Darnell
Publisher :
Page : 0 pages
File Size : 16,51 MB
Release : 2011
Category : Science
ISBN : 9781936113194

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RNA molecules could function as catalysts. --

Author : Raymond F. Gesteland
Publisher : CSHL Press
Page : 774 pages
File Size : 43,36 MB
Release : 2006
Category : Science
ISBN : 0879697393

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Recent studies on the activities of RNA in the cell have revolutionized our understanding of the many roles played by this molecule. The first two editions of The RNA World(1993, 1999) shed light on the pre–biotic era dominated by this versatile molecule, and provided an overview of the state of RNA research at the time. The new third edition of The RNA Worldupdates this perspective, describing the vast array of newly discovered roles for RNA in the modern world. The updated original chapters are supplemented with new chapters on RNA–protein complexes, snRNPs and snoRNPs, telomerase RNA, RNAi, microRNAs, noncoding RNA, and many other subjects. This book is essential reading for anyone interested in the biology of nucleic acids and gene regulation and a valuable resource for teaching these concepts.

Author : John F. Atkins
Publisher :
Page : 0 pages
File Size : 46,63 MB
Release : 2011
Category : Science
ISBN : 9780879699468

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This volume reviews our understanding of two RNA worlds: the primordial RNA world before DNA, in which RNA was both information store and biocatalyst; and the contemporary RNA world, in which mRNA, tRNA, rRNA, siRNA, miRNA, and a host of other RNAs operate.

Author : Pier Luigi Luisi
Publisher : Cambridge University Press
Page : 268 pages
File Size : 25,99 MB
Release : 2006-07-13
Category : Science
ISBN : 1139455648

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The origin of life from inanimate matter has been the focus of much research for decades, both experimentally and philosophically. Luisi takes the reader through the consecutive stages from prebiotic chemistry to synthetic biology, uniquely combining both approaches. This book presents a systematic course discussing the successive stages of self-organisation, emergence, self-replication, autopoiesis, synthetic compartments and construction of cellular models, in order to demonstrate the spontaneous increase in complexity from inanimate matter to the first cellular life forms. A chapter is dedicated to each of these steps, using a number of synthetic and biological examples. With end-of-chapter review questions to aid reader comprehension, this book will appeal to graduate students and academics researching the origin of life and related areas such as evolutionary biology, biochemistry, molecular biology, biophysics and natural sciences.