Overview

"A close look at Günter Blobel’s transformative contributions to molecular cell biology. The difficulty of reconciling chemical mechanisms with the functions of whole living systems has plagued biologists since the development of cell theory in the nineteenth century. As Karl Matlin argues in Crossing the Boundaries of Life, it is no coincidence that this longstanding knot of scientific inquiry was loosened most meaningfully by the work of a cell biologist, the Nobel laureate Günter Blobel. In 1975, using an experimental setup that did not contain any cells at all, Blobel was able to target newly made proteins to cell membrane vesicles, enabling him to theorize how proteins in the cell distribute spatially, an idea he called the signal hypothesis. Over the next twenty years, Blobel and other scientists were able to dissect this mechanism into its precise molecular details. For elaborating his signal concept into a process he termed membrane topogenesis—the idea that each protein in the cell is synthesized with an ""address"" that directs the protein to its correct destination within the cell—Blobel was awarded the Nobel Prize in Physiology or Medicine in 1999. Matlin argues that Blobel’s investigative strategy and its subsequent application addressed a fundamental unresolved dilemma that had bedeviled biology from its very beginning, the relationship between structure and function, allowing biology to achieve mechanistic molecular explanations of biological phenomena. Crossing the Boundaries of Life thus uses Blobel’s research and life story to shed light on the importance of cell biology for twentieth-century science, illustrating how it propelled the development of adjacent disciplines like biochemistry and molecular biology."

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Reviews

Matlin charts new terrain in the history of the life sciences. His book is original, relevant, and provides a wealth of new stories and conceptual problems for the history and philosophy of cell and molecular biology. This exciting piece of scholarship covers a crucial episode of these sciences which merits scholarly attention. Matlin moves the field a step forward. -- Mathias Grote, author of Membranes to Molecular Machines

"“Based solely on its originality, wealth of detail, and subject matter, Crossing the Boundaries of Life deserves to be on the must-read list of every historian of the twentieth-century life sciences.”  * Journal of the History of Biology * ""Based on personal contact and archival research, including an epilogue addressing contending epistemic debates (cellular context vs. molecular processes), this book provides an excellent account of how paradigm shifts actually occur in science. The text is readable for a general audience and provides a host of primary resources. . . . Highly recommended."" * Choice * Günter Blober was a master of integrative analysis, and Karl Matlin proves to be an excellent presenter in this book. * Frankfurter Allgemeine Zeitung (translated from German) * ""Matlin charts new terrain in the history of the life sciences. His book is original, relevant, and provides a wealth of new stories and conceptual problems for the history and philosophy of cell and molecular biology. This exciting piece of scholarship covers a crucial episode of these sciences which merits scholarly attention. Matlin moves the field a step forward."" -- Mathias Grote, author of Membranes to Molecular Machines"

Author Information

Karl S. Matlin is professor emeritus of biological sciences and conceptual and historical studies of science at the University of Chicago. He is the coeditor of several books, most recently Why Study Biology by the Sea?, also published by the University of Chicago Press.

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