Cited by 171Protein Kinase Regulation and GTPase SignalingCellular transport and secretionCellular Mechanics and Interactions

Zizimin1, a novel Cdc42 activator, reveals a new GEF domain for Rho proteins

Meller, Nahum, Irani-Tehrani, Mohammad, Kiosses, William B., Del Pozo, Miguel A., Schwartz, Martin A.·2002·Nature Cell Biology

Abstract

The Rho family GTPases Rac, Rho and Cdc42 are critical in regulating the actin-based cytoskeleton, cell migration, growth, survival and gene expression. These GTPases are activated by guanine nucleotide-exchange factors (GEFs). A biochemical search for Cdc42 activators led to the cloning of zizimin1, a new protein whose overexpression induces Cdc42 activation. Sequence comparison combined with mutational analysis identified a new domain, which we named CZH2, that mediates direct interaction with Cdc42. CZH2-containing proteins constitute a new superfamily that includes the so-called 'CDM' proteins that bind to and activate Rac. Together, the results suggest that CZH2 is a new GEF domain for the Rho family of proteins.

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Authors
Meller, N., Irani-Tehrani, M., Kiosses, W. B., Del Pozo, M. A., & Schwartz, M. A.
Affiliations
Scripps Research Institute (US)
Corresponding author
Schwartz, Martin A.
Venue
Nature Cell Biology
Published
2002-07-31
Volume
4
Issue
9
Pages
639-647
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W1980943495
Cited by
171
References
30
Citations by year
2026: 4 · 2024: 3 · 2023: 1 · 2022: 5 · 2021: 4 · 2020: 9 · 2019: 2 · 2018: 3 · 2017: 6 · 2016: 2 · 2015: 4 · 2014: 7 · 2013: 7 · 2012: 13
FWCI
4.52
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of General Medical Sciences (R01 GM41721)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
Keywords
Cdc42, guanine nucleotide exchange factor, Rho GTPases, Rac activation, Cdc42 activation, actin cytoskeleton regulation, protein superfamilies
MeSH terms
Amino Acid Sequence, Animals, Binding Sites, Cloning, Molecular, Enzyme Activation, Humans, Molecular Sequence Data, RNA, Messenger, Tissue Distribution, 3T3 Cells, Sequence Homology, Amino Acid, Protein Structure, Tertiary, Guanine Nucleotide Exchange Factors, rho GTP-Binding Proteins, cdc42 GTP-Binding Protein, Mice

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