1
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Goo BMSS, Sanstrum BJ, Holden DZY, Yu Y, James NG. Arc/Arg3.1 has an activity-regulated interaction with PICK1 that results in altered spatial dynamics. Sci Rep 2018; 8:14675. [PMID: 30279480 PMCID: PMC6168463 DOI: 10.1038/s41598-018-32821-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 05/25/2018] [Indexed: 01/28/2023] Open
Abstract
Activity-regulated cytoskeleton-associated protein (Arc; also known as Arg3.1) is an immediate early gene product that is transcribed in dendritic spines and, to date, has been best characterized as a positive regulator of AMPAR endocytosis during long-term depression (LTD) through interaction with endocytic proteins. Here, we show that protein interacting with C terminal kinase 1 (PICK1), a protein known to bind to the GluA2 subunit of AMPARs and associated with AMPAR trafficking, was pulled-down from brain homogenates and synaptosomes when using Arc as immobilized bait. Fluctuation and FLIM-FRET-Phasor analysis revealed direct interaction between these proteins when co-expressed that was increased under depolarizing conditions in live cells. At the plasma membrane, Arc-mCherry oligomerization was found to be concentration dependent. Additionally, co-expression of Arc-mCherry and EGFP-PICK1 followed by depolarizing conditions resulted in significant increases in the number and size of puncta containing both proteins. Furthermore, we identified the Arc binding region to be the first 126 amino acids of the PICK1 BAR domain. Overall, our data support a novel interaction and model where PICK1 mediates Arc regulation of AMPARs particularly under depolarizing conditions.
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Affiliation(s)
- Brandee M S S Goo
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, 651 Ilalo St., BSB 222, University of Hawaii, Honolulu, HI, 96813, USA
| | - Bethany J Sanstrum
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, 651 Ilalo St., BSB 222, University of Hawaii, Honolulu, HI, 96813, USA
| | - Diana Z Y Holden
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, 651 Ilalo St., BSB 222, University of Hawaii, Honolulu, HI, 96813, USA
| | | | - Nicholas G James
- Department of Cell and Molecular Biology, John A. Burns School of Medicine, 651 Ilalo St., BSB 222, University of Hawaii, Honolulu, HI, 96813, USA.
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2
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Knezevic I, Predescu D, Bardita C, Wang M, Sharma T, Keith B, Neamu R, Malik AB, Predescu S. Regulation of dynamin-2 assembly-disassembly and function through the SH3A domain of intersectin-1s. J Cell Mol Med 2012; 15:2364-76. [PMID: 21129155 PMCID: PMC3072443 DOI: 10.1111/j.1582-4934.2010.01226.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Intersectin-1s (ITSN-1s), a five Src homology 3 (SH3) domain-containing protein, is critically required for caveolae and clathrin-mediated endocytosis (CME), due to its interactions with dynamin (dyn). Of the five SH3A-E domains, SH3A is unique because of its high affinity for dyn and potent inhibition of CME. However, the molecular mechanism by which SH3A integrates in the overall function of ITSN-1s to regulate the endocytic process is not understood. Using biochemical and functional approaches as well as high-resolution electron microscopy, we show that SH3A exogenously expressed in human lung endothelial cells caused abnormal endocytic structures, distorted caveolae clusters, frequent staining-dense rings around the caveolar necks and 60% inhibition of caveolae internalization. In vitro studies further revealed that SH3A, similar to full-length ITSN-1s stimulates dyn2 oligomerization and guanosine triphosphatase (GTP)ase activity, effects not detected when other SH3 domains of ITSN-1s were used as controls. Strikingly, in the presence of SH3A, dyn2-dyn2 interactions are stabilized and despite continuous GTP hydrolysis, dyn2 oligomers cannot disassemble. SH3A may hold up caveolae release from the plasma membrane and formation of free-transport vesicles, by prolonging the lifetime of assembled dyn2. Altogether, our results indicate that ITSN-1s, via its SH3A has the unique ability to regulate dyn2 assembly-disassembly and function during endocytosis.
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Affiliation(s)
- Ivana Knezevic
- Department of Pharmacology, Rush University Medical Center, Medical College, Vascular Biology Section, Chicago, IL 60612, USA
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3
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Smillie KJ, Cousin MA. Dynamin I phosphorylation and the control of synaptic vesicle endocytosis. ACTA ACUST UNITED AC 2005:87-97. [PMID: 15649133 PMCID: PMC2077358 DOI: 10.1042/bss0720087] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The GTPase dynamin I is essential for synaptic vesicle endocytosis in nerve terminals. It is a nerve terminal phosphoprotein that is dephosphorylated on nerve terminal stimulation by the calcium-dependent protein phosphatase calcineurin and then rephosphorylated by cyclin-dependent kinase 5 on termination of the stimulus. Because of its unusual phosphorylation profile, the phosphorylation status of dynamin I was assumed to be inexorably linked to synaptic vesicle endocytosis; however, direct proof of this link has been elusive until very recently. This review will describe current knowledge regarding dynamin I phosphorylation in nerve terminals and how this regulates its biological function with respect to synaptic vesicle endocytosis.
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Affiliation(s)
| | - Michael A. Cousin
- Person to whom correspondence should be sent, Telephone - +131 650 3259, Fax - +131 650 6527, Email -
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4
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Leonard M, Song BD, Ramachandran R, Schmid SL. Robust Colorimetric Assays for Dynamin's Basal and Stimulated GTPase Activities. Methods Enzymol 2005; 404:490-503. [PMID: 16413294 DOI: 10.1016/s0076-6879(05)04043-7] [Citation(s) in RCA: 87] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Dynamin, unlike many GTPase superfamily members, exhibits a relatively rapid basal rate of GTP hydrolysis that is not rate-limited by GTP binding or GDP dissociation. Also unique to dynamin GTPase family members is their ability to self-assemble into rings and helical stacks of rings either in solution or onto lipid templates. Self-assembly stimulates dynamin's GTPase activity by >100-fold. Given these robust rates of GTP hydrolysis compared to most GTPases, GTP hydrolysis by dynamin can be easily measured using a simple colorimetic assay to detect released phosphate. We describe this assay and report variations in assay conditions that have contributed to the wide range of reported values for dynamin's basal and assembly-stimulated rates of GTP hydrolysis.
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Affiliation(s)
- Marilyn Leonard
- The Scripps Research Institute, Department of Cell Biology, La Jolla, California, USA
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5
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Sever S, Skoch J, Bacskai BJ, Newmyer SL. Assays and functional properties of auxilin-dynamin interactions. Methods Enzymol 2005; 404:570-85. [PMID: 16413301 DOI: 10.1016/s0076-6879(05)04050-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The large GTPase dynamin is required for budding of clathrin-coated vesicles from the plasma membrane, but its mechanism of action is still not understood. Growing evidence indicates that the GTP-bound form of dynamin recruits downstream partners that execute the fission reaction. Recently, we reported nucleotide-dependent interactions between dynamin and auxilin, which suggested that auxilin cooperates with dynamin during vesicle formation. Here we describe three different in vitro assays that monitor auxilin-dynamin interactions, as well as fluorescence lifetime imaging microscopy that identify direct interactions between dynamin and auxilin in cells.
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Affiliation(s)
- Sanja Sever
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
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6
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Abstract
Dynamin I is a large GTPase enzyme required in membrane constriction and fission during multiple forms of endocytosis. The first method described here is for the rapid purification of native dynamin from peripheral membrane extracts of sheep brain using ammonium sulfate precipitation and affinity purification on recombinant SH3 domains. The method greatly enriches for dynamin I at high purity and allows for large-scale biochemical and functional studies. The second method is a nonradioactive, high-throughput colorimetric GTPase assay for dynamin activity. The approach is based on terminating incubations with EDTA and the use of malachite green for high-sensitivity detection of inorganic phosphate release. The two methods will facilitate high-throughput screens for potential dynamin inhibitors or activators.
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Affiliation(s)
- Annie Quan
- Cell Signalling Unit, Children's Medical Research Institute, Sydney, Australia
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7
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Yoshida Y, Kinuta M, Abe T, Liang S, Araki K, Cremona O, Di Paolo G, Moriyama Y, Yasuda T, De Camilli P, Takei K. The stimulatory action of amphiphysin on dynamin function is dependent on lipid bilayer curvature. EMBO J 2004; 23:3483-91. [PMID: 15318165 PMCID: PMC516627 DOI: 10.1038/sj.emboj.7600355] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2004] [Accepted: 07/14/2004] [Indexed: 11/08/2022] Open
Abstract
Amphiphysin is a major dynamin-binding partner at the synapse; however, its function in fission is unclear. Incubation of large unilamellar liposomes with mice brain cytosol led to massive formation of small vesicles, whereas cytosol of amphiphysin 1 knockout mice was much less efficient in this reaction. Vesicle formation from large liposomes by purified dynamin was also strongly enhanced by amphiphysin. In the presence of liposomes, amphiphysin strongly affected dynamin GTPase activity and the recruitment of dynamin to the liposomes, but this activity was highly dependent on liposome size. Deletion from amphiphysin of its central proline-rich stretch dramatically potentiated its effect on dynamin, possibly by relieving an inhibitory intramolecular interaction. These results suggest a model in which maturation of endocytic pits correlates with the oligomerization of dynamin with either amphiphysin or other proteins with similar domain structure. Formation of these complexes is coupled to the activation of dynamin GTPase activity, thus explaining how deep invagination of the pit leads to fission.
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Affiliation(s)
- Yumi Yoshida
- Department of Neuroscience, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Masahiro Kinuta
- Department of Neuroscience, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Tadashi Abe
- Department of Neuroscience, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Shuang Liang
- Department of Neuroscience, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Kenta Araki
- Department of Neuroscience, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Ottavio Cremona
- DIBIT-Scientific Institute San Raffaele Universita' Vita – Salute San Raffaele, Milano, Italy
| | - Gilbert Di Paolo
- Department of Cell Biology and Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT, USA
| | - Yoshinori Moriyama
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Tatsuji Yasuda
- Department of Cell Chemistry, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
| | - Pietro De Camilli
- Department of Cell Biology and Howard Hughes Medical Institute, Yale University School of Medicine, New Haven, CT, USA
| | - Kohji Takei
- Department of Neuroscience, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan
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8
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Song BD, Yarar D, Schmid SL. An assembly-incompetent mutant establishes a requirement for dynamin self-assembly in clathrin-mediated endocytosis in vivo. Mol Biol Cell 2004; 15:2243-52. [PMID: 15004222 PMCID: PMC404019 DOI: 10.1091/mbc.e04-01-0015] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Dynamin GTPase activity is required for its biological function in clathrin-mediated endocytosis; however, the role of self-assembly has not been unambiguously established. Indeed, overexpression of a dynamin mutant, Dyn1-K694A, with impaired ability to self-assemble has been shown to stimulate endocytosis in HeLa cells (Sever et al., Nature 1999, 398, 481). To identify new, assembly-incompetent mutants of dynamin 1, we made point mutations in the GTPase effector/assembly domain (GED) and tested for their effects on self-assembly and clathrin-mediated endocytosis. Mutation of three residues, I690, K694, and I697, suggests that interactions with an amphipathic helix in GED are required for self-assembly. In particular, Dyn1-I690K failed to exhibit detectable assembly-stimulated GTPase activity under all assay conditions. Overexpression of this assembly-incompetent mutant inhibited transferrin endocytosis as potently as the GTPase-defective dominant-negative mutant, Dyn1-K44A. However, worm-like endocytic intermediates accumulated in cells expressing Dyn1-I690K that were structurally distinct from long tubules that accumulated in cells expressing Dyn1-K44A. Together these results provide new structural insight into the role of GED in self-assembly and assembly-stimulated GTPase activity and establish that dynamin self-assembly is essential for clathrin-mediated endocytosis.
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Affiliation(s)
- Byeong Doo Song
- Department of Cell Biology, The Scripps Research Institute, La Jolla, California 92037, USA
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9
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Lam BCH, Sage TL, Bianchi F, Blumwald E. Regulation of ADL6 activity by its associated molecular network. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2002; 31:565-576. [PMID: 12207647 DOI: 10.1046/j.1365-313x.2002.01377.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Plant dynamin-like proteins consist of a group of high molecular weight GTPase with diverse structural arrangements and cellular localizations. In addition, unlike animal dynamins, there was no evidence for the involvement of any plant dynamin-like protein in clathrin-mediated vesicle trafficking. In this study we demonstrate that ADL6 (Arabidopsis dynamin-like protein 6), due to its domain arrangement, behaves similarly to the animal dynamins. The association of ADL6 with clathrin-coated vesicles was demonstrated by co-fractionation and immunocytochemical studies. ADL6 also interacted via its C-terminus with gamma-adaptin, an adaptor protein of clathrin-coated vesicles. Our results suggest that ADL6 participates in clathrin-mediated vesicle trafficking originating from the Golgi. In addition, our studies demonstrate that ADL6 intrinsic GTPase activity is regulated by its association with acidic phospholipids and an SH3 (Src homology 3)-containing protein.
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Affiliation(s)
- Bernard C-H Lam
- Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2
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10
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Ahn S, Kim J, Lucaveche CL, Reedy MC, Luttrell LM, Lefkowitz RJ, Daaka Y. Src-dependent tyrosine phosphorylation regulates dynamin self-assembly and ligand-induced endocytosis of the epidermal growth factor receptor. J Biol Chem 2002; 277:26642-51. [PMID: 12011079 DOI: 10.1074/jbc.m201499200] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Endocytosis of ligand-activated receptors requires dynamin-mediated GTP hydrolysis, which is regulated by dynamin self-assembly. Here, we demonstrate that phosphorylation of dynamin I by c-Src induces its self-assembly and increases its GTPase activity. Electron microscopic analyses reveal that tyrosine-phosphorylated dynamin I spontaneously self-assembles into large stacks of rings. Tyrosine 597 was identified as being phosphorylated both in vitro and in cultured cells following epidermal growth factor receptor stimulation. The replacement of tyrosine 597 with phenylalanine impairs Src kinase-induced dynamin I self-assembly and GTPase activity in vitro. Expression of Y597F dynamin I in cells attenuates agonist-driven epidermal growth factor receptor internalization. Thus, c-Src-mediated tyrosine phosphorylation is required for the function of dynamin in ligand-induced signaling receptor internalization.
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Affiliation(s)
- Seungkirl Ahn
- Howard Hughes Medical Institute, Department of Pharmacology, Duke University Medical Center, Durham, North Carolina 27710, USA
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11
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Cullen PJ, Cozier GE, Banting G, Mellor H. Modular phosphoinositide-binding domains--their role in signalling and membrane trafficking. Curr Biol 2001; 11:R882-93. [PMID: 11696348 DOI: 10.1016/s0960-9822(01)00523-1] [Citation(s) in RCA: 150] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The membrane phospholipid phosphatidylinositol is the precursor of a family of lipid second-messengers, known as phosphoinositides, which differ in the phosphorylation status of their inositol group. A major advance in understanding phosphoinositide signalling has been the identification of a number of highly conserved modular protein domains whose function appears to be to bind various phosphoinositides. Such 'cut and paste' modules are found in a diverse array of multidomain proteins and recruit their host protein to specific regions in cells via interactions with phosphoinositides. Here, with particular reference to proteins involved in membrane traffic pathways, we discuss recent advances in our understanding of phosphoinositide-binding domains.
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Affiliation(s)
- P J Cullen
- Inositide Group, Integrated Signalling Laboratories, Department of Biochemistry, School of Medical Sciences, University of Bristol, Bristol BS8 1TD, UK.
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12
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Machius M, Chuang JL, Wynn RM, Tomchick DR, Chuang DT. Structure of rat BCKD kinase: nucleotide-induced domain communication in a mitochondrial protein kinase. Proc Natl Acad Sci U S A 2001; 98:11218-23. [PMID: 11562470 PMCID: PMC58710 DOI: 10.1073/pnas.201220098] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Mitochondrial protein kinases (mPKs) are molecular switches that down-regulate the oxidation of branched-chain alpha-ketoacids and pyruvate. Elevated levels of these metabolites are implicated in disease states such as insulin-resistant Type II diabetes, branched-chain ketoaciduria, and primary lactic acidosis. We report a three-dimensional structure of a member of the mPK family, rat branched-chain alpha-ketoacid dehydrogenase kinase (BCK). BCK features a characteristic nucleotide-binding domain and a four-helix bundle domain. These two domains are reminiscent of modules found in protein histidine kinases (PHKs), which are involved in two-component signal transduction systems. Unlike PHKs, BCK dimerizes through direct interaction of two opposing nucleotide-binding domains. Nucleotide binding to BCK is uniquely mediated by both potassium and magnesium. Binding of ATP induces disorder-order transitions in a loop region at the nucleotide-binding site. These structural changes lead to the formation of a quadruple aromatic stack in the interface between the nucleotide-binding domain and the four-helix bundle domain, where they induce a movement of the top portion of two helices. Phosphotransfer induces further ordering of the loop region, effectively trapping the reaction product ADP, which explains product inhibition in mPKs. The BCK structure is a prototype for all mPKs and will provide a framework for structure-assisted inhibitor design for this family of kinases.
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Affiliation(s)
- M Machius
- Department of Biochemistry, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9038, USA.
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