The critically acclaimed laboratory standard for more than forty years, Methods in Enzymology is one of the most highly respected publications in the field of biochemistry. Since 1955, each volume has been eagerly awaited, frequently consulted, and praised by researchers and reviewers alike. Now with over 400 volumes (all of them still in print), the series contains much material still relevant today-truly an essential publication for researchers in all fields of life sciences.

Methods in Enzymology is now available online at ScienceDirect - full-text online of volumes 1 onwards. For more information about the Elsevier Book Series on ScienceDirect Program, please visit:
http: //www.info.sciencedirect.com/bookseries/
This volume is the first of two planned volumes on the topic of small GTPases and their role in disease.

The critically acclaimed laboratory standard for more than 40 years, "Methods in Enzymology" is one of the most highly respected publications in the field of biochemistry. Since 1955, each volume has been eagerly awaited, frequently consulted, and praised by researchers and reviewers alike. Now with over 400 volumes (all of them still in print), the series contains much material still relevant today-truly an essential publication for researchers in all fields of life sciences.

"Methods in Enzymology" is now available online at ScienceDirect - full-text online of volume 1 onward. For more information about the Elsevier Book Series on ScienceDirect Program, please visit:
http: //www.info.sciencedirect.com/bookseries/
This volume is the second of two planned volumes on the topic of small GTPases and their role in disease.

The Ras superfamily (>150 human members) encompasses Ras GTPases involved in cell proliferation, Rho GTPases involved in regulating the cytoskeleton, Rab GTPases involved in membrane targeting/fusion and a group of GTPases including Sar1, Arf, Arl and dynamin involved in vesicle budding/fission. These GTPases act as molecular switches and their activities are controlled by a large number of regulatory molecules that affect either GTP loading (guanine nucleotide exchange factors or GEFs) or GTP hydrolysis (GTPase activating proteins or GAPs). In their active state, they interact with a continually increasing, functionally complex array of downstream effectors.
Since the last Methods in Enzymology volume on this topic in 2000, the study of Ras Family GTPases has witnessed a plethora of new directions and trends. With regards to the founding member of the Ras superfamily, the study of Ras in oncogenesis has seen the development and application of more advanced model cell culture and animal systems. The discovery of mutationally activated B-Raf in human cancers has injected renewed interest in this classical effector pathway of Ras.
*Includes a database for Ras family proteins and their effectors and regulators
*Complimentary to volume 406 coverage of the Rho family
*Over 150 international contributors

The Ras superfamily (>150 human members) encompasses Ras GTPases involved in cell proliferation, Rho GTPases involved in regulating the cytoskeleton, Rab GTPases involved in membrane targeting/fusion and a group of GTPases including Sar1, Arf, Arl and dynamin involved in vesicle budding/fission. These GTPases act as molecular switches and their activities are controlled by a large number of regulatory molecules that affect either GTP loading (guanine nucleotide exchange factors or GEFs) or GTP hydrolysis (GTPase activating proteins or GAPs). In their active state, they interact with a continually increasing, functionally complex array of downstream effectors.
Since the last Methods in Enzymology volume on this topic in 2000, Rho GTPases have continued to receive a huge amount of attention. The human genome sequence has revealed the full extent of the Rho GEF and Rho GAP families (over 80 members for each) and the challenge of identifying the molecular interactions and cellular pathways influenced by each of these regulators is a daunting prospect. This new volume describes some of the methods currently being used to examine Rho family GTPase regulation at the biochemical and cellular level.
*Describes the methods currently being used to examine Rho family GTPase regulation at the biochemical and cellular levels.
*Includes new imaging techniques that revolutionize the ability to visualize GTPase activities.
*Over 150 international contributors.

Rab GTPases now comprise a family of >63 members. They are emerging as the key hub element controlling the membrane architecture of eukaryotic cells. They are intimately involved in vesicle targeting and fusion in both the endocytic and exocytic pathways and direct the assembly and disassembly of protein complexes that include regulators (GEFs and GAPs), effectors (tethers/motors) and fusion components (SNAREs) that control membrane targeting and fusion. During the last 3 years the field has virtually exploded with the identification and characterization of many new Rab proteins and their effectors.
Our understanding of how Rab GTPases control membrane function remains at its infancy. This volume of MIE provides a wealth of new concepts, approaches and tools to study Rab proteins in the test tube and in living cells that will be of strong benefit to both established laboratories and new investigators in the field to elucidate Rab GTPase function in cellular development, differentiation and proliferation.
* Comprehensive overview of Rab GTPase phylogeny and systems biology
* Identification and characterization of Rab GEFs, GAPs and effectors
* General methodologies to study Rab GTPase function in vitro and in vivo using biochemical, molecular and microscopy approaches

General Description of the Volume:
Small GTPases play a key role in many aspects of contemporary cell biology: control of cell growth and differentiation; regulation of cell adhesion and cell movement; the organization of the actin cytoskeleton; and the regulation of intracellular vesicular transport. This volume plus its companions Volumes 256 and 257 cover all the biochemical and biological assays currently in use for analyzing the role of small GTPases in many aspects of cell biology at the molecular level.
General Description of the Series:
The critically acclaimed laboratory standard for more than forty years, Methods in Enzymology is one of the most highly respected publications in the field of biochemistry. Since 1955, each volume has been eagerly awaited, frequently consulted, and praised by researchers and reviewers alike. Now with more than 300 volumes (all of them still in print), the series contains much material still relevant today--truly an essential publication for researchers in all fields of life sciences.
Key Features
* Expression, purification, and posttranslational modification
* Guanine nucleotide exchange and hydrolysis
* Cell expression and analysis "in Vitro"
* Biological activity