SHANK2

SHANK2
Identifiers
Aliases	SHANK2, AUTS17, CORTBP1, CTTNBP1, ProSAP1, SHANK, SPANK-3, SH3 and multiple ankyrin repeat domains 2
External IDs	OMIM: 603290; MGI: 2671987; HomoloGene: 105965; GeneCards: SHANK2; OMA:SHANK2 - orthologs
Gene location (Human) Chr. Chromosome 11 (human) Band 11q13.3-q13.4 Start 70,467,854 bp End 71,252,577 bp
Gene location (Mouse) Chr. Chromosome 7 (mouse) Band 7|7 F5 Start 143,555,665 bp End 143,978,231 bp
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in Brodmann area 23 bronchial epithelial cell middle temporal gyrus Region I of hippocampus proper entorhinal cortex corpus epididymis Epithelium of choroid plexus endothelial cell retinal pigment epithelium primary visual cortex Top expressed in primary visual cortex superior frontal gyrus dentate gyrus of hippocampal formation granule cell otolith organ utricle cerebellar cortex lobe of cerebellum zygote substantia nigra neural layer of retina More reference expression data BioGPS More reference expression data
Gene ontology Molecular function SH3 domain binding protein binding synaptic receptor adaptor activity ionotropic glutamate receptor binding signaling receptor complex adaptor activity Cellular component cytoplasm postsynaptic membrane cell projection membrane postsynaptic density neurofilament photoreceptor inner segment growth cone plasma membrane dendritic spine photoreceptor outer segment synapse brush border membrane cell junction neuronal cell body apical plasma membrane ciliary membrane neuron projection ionotropic glutamate receptor complex cytosol cellular component dendrite neuron spine Biological process learning vocalization behavior adult behavior long-term depression social behavior synapse assembly long-term potentiation brain morphogenesis synaptic assembly at neuromuscular junction positive regulation of synaptic transmission, glutamatergic dendritic spine morphogenesis positive regulation of dendritic spine development postsynaptic density assembly regulation of AMPA receptor activity positive regulation of excitatory postsynaptic potential Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 22941 210274 Ensembl ENSG00000162105 ENSMUSG00000037541 UniProt Q9UPX8 Q80Z38 RefSeq (mRNA) NM_012309 NM_133266 NM_001379226 NM_001081370 NM_001113373 RefSeq (protein) NP_036441 NP_573573 NP_001366155 NP_001074839 NP_001106844 Location (UCSC) Chr 11: 70.47 – 71.25 Mb Chr 7: 143.56 – 143.98 Mb PubMed search
Wikidata
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SH3 and multiple ankyrin repeat domains protein 2 is a protein that in humans is encoded by the SHANK2 gene. Two alternative splice variants, encoding distinct isoforms, are reported. Additional splice variants exist but their full-length nature has not been determined.

Function

This gene encodes a protein that is a member of the Shank family of synaptic proteins that may function as molecular scaffolds in the postsynaptic density (PSD). Shank proteins contain multiple domains for protein-protein interaction, including ankyrin repeats, an SH3 domain, a PSD-95/Dlg/ZO-1 domain, a sterile alpha motif domain, and a proline-rich region. This particular family member contains a PDZ domain, a consensus sequence for cortactin SH3 domain-binding peptides and a sterile alpha motif. The alternative splicing demonstrated in Shank genes has been suggested as a mechanism for regulating the molecular structure of Shank and the spectrum of Shank-interacting proteins in the PSDs of adult and developing brain.

It is thought that SHANK2 might play a role in synaptogenesis by attaching metabotropic glutamate receptors (mGluRs) to an existing pool of NMDA receptors (NMDA-R), bylinking to the NMDA-R through PSD-95, and the mGluRs through HOMER1. An alternative hypothesis is that the Homer/Shank/GKAP/PSD-95 assembly mediates physical association of the NMDAR with IP3R/RYR and intracellular Ca2+ stores.

Interactions

SHANK2 has been shown to interact with:

• ARHGEF7,
• Cortactin,
• DLG4,
• DLGAP1, and
• DNM2.

Associations with neuropsychiatric disease

Mutations in SHANK2 have been associated with autism spectrum disorder (ASD) and schizophrenia. In particular, heterozygous loss-of-function mutations have a near-complete penetrance in ASD. Neurons generated from people with ASD and SHANK2 mutations develop larger dendritic trees and more synaptic connections than those from healthy controls.

Further reading

• Sheng M, Kim E (2000). "The Shank family of scaffold proteins". J. Cell Sci. 113. ( Pt 11): 1851–6. PMID 10806096.
• Andersson B, Wentland MA, Ricafrente JY, Liu W, Gibbs RA (1996). "A "double adaptor" method for improved shotgun library construction". Anal. Biochem. 236 (1): 107–13. doi:10.1006/abio.1996.0138. PMID 8619474.
• Yu W, Andersson B, Worley KC, Muzny DM, Ding Y, Liu W, Ricafrente JY, Wentland MA, Lennon G, Gibbs RA (1997). "Large-scale concatenation cDNA sequencing". Genome Res. 7 (4): 353–8. doi:10.1101/gr.7.4.353. PMC 139146. PMID 9110174.
• Du Y, Weed SA, Xiong WC, Marshall TD, Parsons JT (1998). "Identification of a novel cortactin SH3 domain-binding protein and its localization to growth cones of cultured neurons". Mol. Cell. Biol. 18 (10): 5838–51. PMC 109170. PMID 9742101.
• Zitzer H, Richter D, Kreienkamp HJ (1999). "Agonist-dependent interaction of the rat somatostatin receptor subtype 2 with cortactin-binding protein 1". J. Biol. Chem. 274 (26): 18153–6. doi:10.1074/jbc.274.26.18153. PMID 10373412.
• Tu JC, Xiao B, Naisbitt S, Yuan JP, Petralia RS, Brakeman P, Doan A, Aakalu VK, Lanahan AA, Sheng M, Worley PF (1999). "Coupling of mGluR/Homer and PSD-95 complexes by the Shank family of postsynaptic density proteins". Neuron. 23 (3): 583–92. doi:10.1016/S0896-6273(00)80810-7. PMID 10433269.
• Kikuno R, Nagase T, Ishikawa K, Hirosawa M, Miyajima N, Tanaka A, Kotani H, Nomura N, Ohara O (1999). "Prediction of the coding sequences of unidentified human genes. XIV. The complete sequences of 100 new cDNA clones from brain which code for large proteins in vitro". DNA Res. 6 (3): 197–205. doi:10.1093/dnares/6.3.197. PMID 10470851.
• Boeckers TM, Winter C, Smalla KH, Kreutz MR, Bockmann J, Seidenbecher C, Garner CC, Gundelfinger ED (1999). "Proline-rich synapse-associated proteins ProSAP1 and ProSAP2 interact with synaptic proteins of the SAPAP/GKAP family". Biochem. Biophys. Res. Commun. 264 (1): 247–52. doi:10.1006/bbrc.1999.1489. PMID 10527873.
• Kreienkamp HJ, Zitzer H, Gundelfinger ED, Richter D, Bockers TM (2000). "The calcium-independent receptor for alpha-latrotoxin from human and rodent brains interacts with members of the ProSAP/SSTRIP/Shank family of multidomain proteins". J. Biol. Chem. 275 (42): 32387–90. doi:10.1074/jbc.C000490200. PMID 10964907.
• Kreienkamp HJ, Zitzer H, Richter D (2001). "Identification of proteins interacting with the rat somatostatin receptor subtype 2". J. Physiol. Paris. 94 (3–4): 193–8. doi:10.1016/S0928-4257(00)00204-7. PMID 11087996.
• Okamoto PM, Gamby C, Wells D, Fallon J, Vallee RB (2002). "Dynamin isoform-specific interaction with the shank/ProSAP scaffolding proteins of the postsynaptic density and actin cytoskeleton". J. Biol. Chem. 276 (51): 48458–65. doi:10.1074/jbc.M104927200. PMC 2715172. PMID 11583995.{{cite journal}}: CS1 maint: unflagged free DOI (link)
• Soltau M, Richter D, Kreienkamp HJ (2003). "The insulin receptor substrate IRSp53 links postsynaptic shank1 to the small G-protein cdc42". Mol. Cell. Neurosci. 21 (4): 575–83. doi:10.1006/mcne.2002.1201. PMID 12504591.
• Park E, Na M, Choi J, Kim S, Lee JR, Yoon J, Park D, Sheng M, Kim E (2003). "The Shank family of postsynaptic density proteins interacts with and promotes synaptic accumulation of the beta PIX guanine nucleotide exchange factor for Rac1 and Cdc42". J. Biol. Chem. 278 (21): 19220–9. doi:10.1074/jbc.M301052200. PMID 12626503.
• Han W, Kim KH, Jo MJ, Lee JH, Yang J, Doctor RB, Moe OW, Lee J, Kim E, Lee MG (2006). "Shank2 associates with and regulates Na+/H+ exchanger 3". J. Biol. Chem. 281 (3): 1461–9. doi:10.1074/jbc.M509786200. PMID 16293618.
• Taylor TD, Noguchi H, Totoki Y, Toyoda A, Kuroki Y, Dewar K, Lloyd C, Itoh T, Takeda T, Kim DW, She X, Barlow KF, Bloom T, Bruford E, Chang JL, Cuomo CA, Eichler E, FitzGerald MG, Jaffe DB, LaButti K, Nicol R, Park HS, Seaman C, Sougnez C, Yang X, Zimmer AR, Zody MC, Birren BW, Nusbaum C, Fujiyama A, Hattori M, Rogers J, Lander ES, Sakaki Y (2006). "Human chromosome 11 DNA sequence and analysis including novel gene identification". Nature. 440 (7083): 497–500. doi:10.1038/nature04632. PMID 16554811.