Amphiphysin

AMPH
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 1KY7, 1UTC, 3SOG, 4ATM
Identifiers
Aliases	AMPH, AMPH1, amphiphysin
External IDs	OMIM: 600418 MGI: 103574 HomoloGene: 121585 GeneCards: AMPH
Gene ontology Molecular function • ARF guanyl-nucleotide exchange factor activity • protein binding • phospholipid binding Cellular component • actin cytoskeleton • cytoplasm • cell junction • trans-Golgi network • synapse • synaptic vesicle membrane • cytoskeleton • membrane • cytoplasmic vesicle • synaptic vesicle • leading edge membrane Biological process • endocytosis • chemical synaptic transmission • positive regulation of GTPase activity Sources:Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	273	218038
Ensembl	ENSG00000078053	ENSMUSG00000021314
UniProt	P49418	Q7TQF7
RefSeq (mRNA)	NM_001635 NM_139316	NM_175007 NM_001289546
RefSeq (protein)	NP_001626.1 NP_647477.1	NP_001276475.1 NP_778172.1
Location (UCSC)	Chr 7: 38.38 – 38.63 Mb	Chr 13: 18.95 – 19.15 Mb
PubMed search	[1]	[2]
Wikidata

View/Edit Human

View/Edit Mouse

Amphiphysin is a protein that in humans is encoded by the AMPH gene.^[3][4]

This gene encodes a protein associated with the cytoplasmic surface of synaptic vesicles. A subset of patients with stiff person syndrome who were also affected by breast cancer are positive for autoantibodies against this protein. Alternate splicing of this gene results in two transcript variants encoding different isoforms. Additional splice variants have been described, but their full length sequences have not been determined.^[4]

Amphiphysin is a brain-enriched protein with an N-terminal lipid interaction, dimerisation and membrane bending BAR domain, a middle clathrin and adaptor binding domain and a C-terminal SH3 domain. In the brain, its primary function is thought to be the recruitment of dynamin to sites of clathrin-mediated endocytosis. There are 2 mammalian amphiphysins with similar overall structure. A ubiquitous splice form of amphiphysin 2 that does not contain clathrin or adaptor interactions is highly expressed in muscle tissue and is involved in the formation and stabilization of the T-tubule network. In other tissues amphiphysin is likely involved in other membrane bending and curvature stabilization events.

Interactions

Amphiphysin has been shown to interact with DNM1,^{[5][6][7][8][9]} Phospholipase D1,^[10] CDK5R1,^[11] PLD2,^[10] CABIN1^[12] and SH3GL2.^[5][13]

See also

• AP180
• Epsin

References

1. "Human PubMed Reference:".
2. "Mouse PubMed Reference:".
3. De Camilli, P.; Thomas, A; Cofiell, R; Folli, F; Lichte, B; Piccolo, G; Meinck, HM; Austoni, M; et al. (December 1993). "The synaptic vesicle-associated protein amphiphysin is the 128-kD autoantigen of Stiff-Man syndrome with breast cancer". J Exp Med. 178 (6): 2219–23. doi:10.1084/jem.178.6.2219. PMC 2191289. PMID 8245793.
4. "Entrez Gene: AMPH amphiphysin (Stiff-Man syndrome with breast cancer 128kDa autoantigen)".
5. Micheva, K. D.; Kay, BK; McPherson, PS (October 1997). "Synaptojanin forms two separate complexes in the nerve terminal. Interactions with endophilin and amphiphysin". J. Biol. Chem. 272 (43): 27239–45. doi:10.1074/jbc.272.43.27239. PMID 9341169.
6. Wigge, P; Köhler, K; Vallis, Y; Doyle, CA; Owen, D; Hunt, SP; McMahon, HT (October 1997). "Amphiphysin heterodimers: potential role in clathrin-mediated endocytosis". Mol. Biol. Cell. 8 (10): 2003–15. doi:10.1091/mbc.8.10.2003. PMC 25662. PMID 9348539.
7. McMahon, Harvey T; Wigge, Patrick; Smith, Corrin (August 1997). "Clathrin interacts specifically with amphiphysin and is displaced by dynamin". FEBS Lett. 413 (2): 319–22. doi:10.1016/S0014-5793(97)00928-9. PMID 9280305.
8. Chen-Hwang, M.-C.; Chen, HR; Elzinga, M; Hwang, YW (May 2002). "Dynamin is a minibrain kinase/dual specificity Yak1-related kinase 1A substrate". J. Biol. Chem. 277 (20): 17597–604. doi:10.1074/jbc.M111101200. PMID 11877424.
9. Grabs, D.; Slepnev, VI; Songyang, Z; David, C; Lynch, M; Cantley, LC; De Camilli, P (May 1997). "The SH3 domain of amphiphysin binds the proline-rich domain of dynamin at a single site that defines a new SH3 binding consensus sequence". J. Biol. Chem. 272 (20): 13419–25. doi:10.1074/jbc.272.20.13419. PMID 9148966.
10. Lee, C.; Kim, SR; Chung, JK; Frohman, MA; Kilimann, MW; Rhee, SG (June 2000). "Inhibition of phospholipase D by amphiphysins". J. Biol. Chem. 275 (25): 18751–8. doi:10.1074/jbc.M001695200. PMID 10764771.
11. Floyd, S. R.; Porro, EB; Slepnev, VI; Ochoa, GC; Tsai, LH; De Camilli, P (March 2001). "Amphiphysin 1 binds the cyclin-dependent kinase (cdk) 5 regulatory subunit p35 and is phosphorylated by cdk5 and cdc2". J. Biol. Chem. 276 (11): 8104–10. doi:10.1074/jbc.M008932200. PMID 11113134.
12. Lai, M. M.; Luo, HR; Burnett, PE; Hong, JJ; Snyder, SH (November 2000). "The calcineurin-binding protein cain is a negative regulator of synaptic vesicle endocytosis". J. Biol. Chem. 275 (44): 34017–20. doi:10.1074/jbc.C000429200. PMID 10931822.
13. Modregger, J.; Schmidt, AA; Ritter, B; Huttner, WB; Plomann, M (February 2003). "Characterization of Endophilin B1b, a brain-specific membrane-associated lysophosphatidic acid acyl transferase with properties distinct from endophilin A1". J. Biol. Chem. 278 (6): 4160–7. doi:10.1074/jbc.M208568200. PMID 12456676.

Further reading

• Lichte, B; Veh, RW; Meyer, HE; Kilimann, MW (1992). "Amphiphysin, a novel protein associated with synaptic vesicles". EMBO J. 11 (7): 2521–30. PMC 556727. PMID 1628617.
• Yamamoto, Raina; Li, Xu; Winter, Silke; Francke, Uta; Kilimann, Manfred W. (1995). "Primary structure of human amphiphysin, the dominant autoantigen of paraneoplastic stiff-man syndrome, and mapping of its gene (AMPH) to chromosome 7p13-p14". Hum. Mol. Genet. 4 (2): 265–8. doi:10.1093/hmg/4.2.265. PMID 7757077.
• David, C; Solimena, M; Decamilli, P (1994). "Autoimmunity in stiff-Man syndrome with breast cancer is targeted to the C-terminal region of human amphiphysin, a protein similar to the yeast proteins, Rvs167 and Rvs161". FEBS Lett. 351 (1): 73–9. doi:10.1016/0014-5793(94)00826-4. PMID 8076697.
• David, C.; McPherson, PS; Mundigl, O; De Camilli, P (1996). "A role of amphiphysin in synaptic vesicle endocytosis suggested by its binding to dynamin in nerve terminals". Proc. Natl. Acad. Sci. U.S.A. 93 (1): 331–5. doi:10.1073/pnas.93.1.331. PMC 40232. PMID 8552632.
• Grabs, D.; Slepnev, VI; Songyang, Z; David, C; Lynch, M; Cantley, LC; De Camilli, P (1997). "The SH3 domain of amphiphysin binds the proline-rich domain of dynamin at a single site that defines a new SH3 binding consensus sequence". J. Biol. Chem. 272 (20): 13419–25. doi:10.1074/jbc.272.20.13419. PMID 9148966.
• Butler, M. H.; David, C; Ochoa, GC; Freyberg, Z; Daniell, L; Grabs, D; Cremona, O; De Camilli, P (1997). "Amphiphysin II (SH3P9; BIN1), a member of the amphiphysin/Rvs family, is concentrated in the cortical cytomatrix of axon initial segments and nodes of ranvier in brain and around T tubules in skeletal muscle". J. Cell Biol. 137 (6): 1355–67. doi:10.1083/jcb.137.6.1355. PMC 2132527. PMID 9182667.
• Ramjaun, A. R.; Micheva, KD; Bouchelet, I; McPherson, PS (1997). "Identification and characterization of a nerve terminal-enriched amphiphysin isoform". J. Biol. Chem. 272 (26): 16700–6. doi:10.1074/jbc.272.26.16700. PMID 9195986.
• McMahon, Harvey T; Wigge, Patrick; Smith, Corrin (1997). "Clathrin interacts specifically with amphiphysin and is displaced by dynamin". FEBS Lett. 413 (2): 319–22. doi:10.1016/S0014-5793(97)00928-9. PMID 9280305.
• Micheva, Kristina D.; Ramjaun, Antoine R.; Kay, Brian K.; McPherson, Peter S. (1997). "SH3 domain-dependent interactions of endophilin with amphiphysin". FEBS Lett. 414 (2): 308–12. doi:10.1016/S0014-5793(97)01016-8. PMID 9315708.
• Wigge, P; Köhler, K; Vallis, Y; Doyle, CA; Owen, D; Hunt, SP; McMahon, HT (1997). "Amphiphysin heterodimers: potential role in clathrin-mediated endocytosis". Mol. Biol. Cell. 8 (10): 2003–15. doi:10.1091/mbc.8.10.2003. PMC 25662. PMID 9348539.
• Floyd, S; Butler, MH; Cremona, O; David, C; Freyberg, Z; Zhang, X; Solimena, M; Tokunaga, A; et al. (1998). "Expression of amphiphysin I, an autoantigen of paraneoplastic neurological syndromes, in breast cancer". Mol. Med. 4 (1): 29–39. PMC 2230265. PMID 9513187.
• Ramjaun, Antoine R.; McPherson, Peter S. (1998). "Multiple amphiphysin II splice variants display differential clathrin binding: identification of two distinct clathrin-binding sites". J. Neurochem. 70 (6): 2369–76. doi:10.1046/j.1471-4159.1998.70062369.x. PMID 9603201.
• Slepnev, V. I.; Ochoa, GC; Butler, MH; Grabs, D; De Camilli, P (1998). "Role of phosphorylation in regulation of the assembly of endocytic coat complexes". Science. 281 (5378): 821–4. doi:10.1126/science.281.5378.821. PMID 9694653.
• Cestra, G.; Castagnoli, L; Dente, L; Minenkova, O; Petrelli, A; Migone, N; Hoffmüller, U; Schneider-Mergener, J; Cesareni, G (1999). "The SH3 domains of endophilin and amphiphysin bind to the proline-rich region of synaptojanin 1 at distinct sites that display an unconventional binding specificity". J. Biol. Chem. 274 (45): 32001–7. doi:10.1074/jbc.274.45.32001. PMID 10542231.
• Slepnev, V. I.; Ochoa, GC; Butler, MH; De Camilli, P (2000). "Tandem arrangement of the clathrin and AP-2 binding domains in amphiphysin 1 and disruption of clathrin coat function by amphiphysin fragments comprising these sites". J. Biol. Chem. 275 (23): 17583–9. doi:10.1074/jbc.M910430199. PMID 10748223.
• Lee, C.; Kim, SR; Chung, JK; Frohman, MA; Kilimann, MW; Rhee, SG (2000). "Inhibition of phospholipase D by amphiphysins". J. Biol. Chem. 275 (25): 18751–8. doi:10.1074/jbc.M001695200. PMID 10764771.
• Onofri, F.; Giovedi, S; Kao, HT; Valtorta, F; Bongiorno Borbone, L; De Camilli, P; Greengard, P; Benfenati, F (2000). "Specificity of the binding of synapsin I to Src homology 3 domains". J. Biol. Chem. 275 (38): 29857–67. doi:10.1074/jbc.M006018200. PMID 10899172.
• Lai, M. M.; Luo, HR; Burnett, PE; Hong, JJ; Snyder, SH (2000). "The calcineurin-binding protein cain is a negative regulator of synaptic vesicle endocytosis". J. Biol. Chem. 275 (44): 34017–20. doi:10.1074/jbc.C000429200. PMID 10931822.
• Floyd, S. R.; Porro, EB; Slepnev, VI; Ochoa, GC; Tsai, LH; De Camilli, P (2001). "Amphiphysin 1 binds the cyclin-dependent kinase (cdk) 5 regulatory subunit p35 and is phosphorylated by cdk5 and cdc2". J. Biol. Chem. 276 (11): 8104–10. doi:10.1074/jbc.M008932200. PMID 11113134.
• a. Leventis, Peter; m. Chow, Brenda; Stewart, Bryan A.; Iyengar, Balaji; Campos, Ana Regina; Boulianne, Gabrielle L. (2001). "Drosophila Amphiphysin is a post-synaptic protein required for normal locomotion but not endocytosis". Traffic. 2 (11): 839–50. doi:10.1034/j.1600-0854.2001.21113.x. PMID 11733051.
• Zhang, Bing; Zelhof, Andrew C. (2002). "Amphiphysins: raising the BAR for synaptic vesicle recycling and membrane dynamics". Traffic. 3 (7): 452–60. doi:10.1034/j.1600-0854.2002.30702.x. PMID 12047553. Review.
• Zelhof, AC; Bao, H; Hardy, RW; Razzaq, A; Zhang, B; Doe, CQ (2001). "Drosophila Amphiphysin is implicated in protein localization and membrane morphogenesis but not in synaptic vesicle endocytosis". Development. 128 (24): 5005–15. PMID 11748137.
• Mathew, D; Popescu, A; Budnik, V (2003). "Drosophila amphiphysin functions during synaptic Fasciclin II membrane cycling". J Neurosci. 23 (33): 10710–6. PMID 14627656.

External links

• Bringing your curves to the bar, amphiphysin home page
• De Camilli, Pietro; Takei, Kohji; Slepnev, Vladimir I.; Haucke, Volker (May 1999). "Functional partnership between amphiphysin and dynamin in clathrin-mediated endocytosis". Nat. Cell Biol. 1 (1): 33–9. doi:10.1038/9004. PMID 10559861.
• Peter, B. J.; Kent, HM; Mills, IG; Vallis, Y; Butler, PJ; Evans, PR; McMahon, HT (January 2004). "BAR domains as sensors of membrane curvature: the amphiphysin BAR structure". Science. 303 (5657): 495–9. doi:10.1126/science.1092586. PMID 14645856.
• Evergren, Emma; Marcucci, Melissa; Tomilin, Nikolay; Löw, Peter; Slepnev, Vladimir; Andersson, Fredrik; Gad, Helge; Brodin, Lennart; et al. (July 2004). "Amphiphysin is a component of clathrin coats formed during synaptic vesicle recycling at the lamprey giant synapse". Traffic. 5 (7): 514–28. doi:10.1111/j.1398-9219.2004.00198.x. PMID 15180828.
• Razzaq, A.; Robinson, IM; McMahon, HT; Skepper, JN; Su, Y; Zelhof, AC; Jackson, AP; Gay, NJ; O'Kane, CJ (November 2001). "Amphiphysin is necessary for organization of the excitation-contraction coupling machinery of muscles, but not for synaptic vesicle endocytosis in Drosophila". Genes Dev. 15 (22): 2967–79. doi:10.1101/gad.207801. PMC 312829. PMID 11711432.