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Stergas HR, Dillon-Martin M, Dumas CM, Hansen NA, Carasi-Schwartz FJ, D'Amico AR, Finnegan KM, Juch U, Kane KR, Kaplan IE, Masengarb ML, Melero ME, Meyer LE, Sacher CR, Scriven EA, Ebert AM, Ballif BA. CRK and NCK adaptors may functionally overlap in zebrafish neurodevelopment, as indicated by common binding partners and overlapping expression patterns. FEBS Lett 2024; 598:302-320. [PMID: 38058169 DOI: 10.1002/1873-3468.14781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 10/18/2023] [Accepted: 10/29/2023] [Indexed: 12/08/2023]
Abstract
CRK adaptor proteins are important for signal transduction mechanisms driving cell proliferation and positioning during vertebrate central nervous system development. Zebrafish lacking both CRK family members exhibit small, disorganized retinas with 50% penetrance. The goal of this study was to determine whether another adaptor protein might functionally compensate for the loss of CRK adaptors. Expression patterns in developing zebrafish, and bioinformatic analyses of the motifs recognized by their SH2 and SH3 domains, suggest NCK adaptors are well-positioned to compensate for loss of CRK adaptors. In support of this hypothesis, proteomic analyses found CRK and NCK adaptors share overlapping interacting partners including known regulators of cell adhesion and migration, suggesting their functional intersection in neurodevelopment.
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Affiliation(s)
| | | | - Caroline M Dumas
- Department of Biology, University of Vermont, Burlington, VT, USA
| | - Nicole A Hansen
- Department of Biology, University of Vermont, Burlington, VT, USA
| | | | - Alex R D'Amico
- Department of Biology, University of Vermont, Burlington, VT, USA
| | - Kylie M Finnegan
- Department of Biology, University of Vermont, Burlington, VT, USA
| | - Uatchet Juch
- Department of Biology, University of Vermont, Burlington, VT, USA
| | - Keeley R Kane
- Department of Biology, University of Vermont, Burlington, VT, USA
| | - Isabel E Kaplan
- Department of Biology, University of Vermont, Burlington, VT, USA
| | | | - Marina E Melero
- Department of Biology, University of Vermont, Burlington, VT, USA
| | - Lauren E Meyer
- Department of Biology, University of Vermont, Burlington, VT, USA
| | - Conrad R Sacher
- Department of Biology, University of Vermont, Burlington, VT, USA
| | - Evan A Scriven
- Department of Biology, University of Vermont, Burlington, VT, USA
| | - Alicia M Ebert
- Department of Biology, University of Vermont, Burlington, VT, USA
| | - Bryan A Ballif
- Department of Biology, University of Vermont, Burlington, VT, USA
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Contribution of Crk adaptor proteins to host cell and bacteria interactions. BIOMED RESEARCH INTERNATIONAL 2014; 2014:372901. [PMID: 25506591 PMCID: PMC4260429 DOI: 10.1155/2014/372901] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 09/14/2014] [Indexed: 12/27/2022]
Abstract
The Crk adaptor family of proteins comprises the alternatively spliced CrkI and CrkII isoforms, as well as the paralog Crk-like (CrkL) protein, which is encoded by a different gene. Initially thought to be involved in signaling during apoptosis and cell adhesion, this ubiquitously expressed family of proteins is now known to play essential roles in integrating signals from a wide range of stimuli. In this review, we describe the structure and function of the different Crk proteins. We then focus on the emerging roles of Crk adaptors during Enterobacteriaceae pathogenesis, with special emphasis on the important human pathogens Salmonella, Shigella, Yersinia, and enteropathogenic Escherichia coli. Throughout, we remark on opportunities for future research into this intriguing family of proteins.
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Tuning protein autoinhibition by domain destabilization. Nat Struct Mol Biol 2011; 18:550-5. [PMID: 21532593 PMCID: PMC3265570 DOI: 10.1038/nsmb.2039] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2010] [Accepted: 02/15/2011] [Indexed: 12/19/2022]
Abstract
Activation of many multi-domain signaling proteins requires rearrangement of autoinhibitory interdomain interactions that occlude activator binding sites. In one model for activation, the major inactive conformation exists in equilibrium with activated-like conformations that can be stabilized by ligand binding or post-translational modifications. The molecular basis for this model is established for the archetypal signaling adapter protein Crk-II by measuring the thermodynamics and kinetics of the equilibrium between autoinhibited and activated-like states using fluorescence and NMR spectroscopies, together with segmental isotopic labeling via expressed protein ligation. The results demonstrate that intramolecular domain-domain interactions both stabilize the autoinhibited state and induce the activated-like conformation. A combination of favorable interdomain interactions and unfavorable intradomain structural changes fine-tunes the population of the activated-like conformation and allows facile response to activators. This mechanism suggests a general strategy for optimization of autoinhibitory interactions of multi-domain proteins.
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Birge RB, Kalodimos C, Inagaki F, Tanaka S. Crk and CrkL adaptor proteins: networks for physiological and pathological signaling. Cell Commun Signal 2009; 7:13. [PMID: 19426560 PMCID: PMC2689226 DOI: 10.1186/1478-811x-7-13] [Citation(s) in RCA: 209] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2009] [Accepted: 05/10/2009] [Indexed: 01/24/2023] Open
Abstract
The Crk adaptor proteins (Crk and CrkL) constitute an integral part of a network of essential signal transduction pathways in humans and other organisms that act as major convergence points in tyrosine kinase signaling. Crk proteins integrate signals from a wide variety of sources, including growth factors, extracellular matrix molecules, bacterial pathogens, and apoptotic cells. Mounting evidence indicates that dysregulation of Crk proteins is associated with human diseases, including cancer and susceptibility to pathogen infections. Recent structural work has identified new and unusual insights into the regulation of Crk proteins, providing a rationale for how Crk can sense diverse signals and produce a myriad of biological responses.
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Affiliation(s)
- Raymond B Birge
- Department of Biochemistry & Molecular Biology, UMDNJ-New Jersey Medical School, 185 South Orange Ave, Newark, NJ 07103, USA.
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