NameDisks large homolog 4
Synonyms
  • Postsynaptic density protein 95
  • PSD-95
  • PSD95
  • SAP-90
  • SAP90
  • Synapse-associated protein 90
Gene NameDLG4
OrganismHuman
Amino acid sequence
>lcl|BSEQ0009445|Disks large homolog 4
MDCLCIVTTKKYRYQDEDTPPLEHSPAHLPNQANSPPVIVNTDTLEAPGYELQVNGTEGE
MEYEEITLERGNSGLGFSIAGGTDNPHIGDDPSIFITKIIPGGAAAQDGRLRVNDSILFV
NEVDVREVTHSAAVEALKEAGSIVRLYVMRRKPPAEKVMEIKLIKGPKGLGFSIAGGVGN
QHIPGDNSIYVTKIIEGGAAHKDGRLQIGDKILAVNSVGLEDVMHEDAVAALKNTYDVVY
LKVAKPSNAYLSDSYAPPDITTSYSQHLDNEISHSSYLGTDYPTAMTPTSPRRYSPVAKD
LLGEEDIPREPRRIVIHRGSTGLGFNIVGGEDGEGIFISFILAGGPADLSGELRKGDQIL
SVNGVDLRNASHEQAAIALKNAGQTVTIIAQYKPEEYSRFEAKIHDLREQLMNSSLGSGT
ASLRSNPKRGFYIRALFDYDKTKDCGFLSQALSFRFGDVLHVIDASDEEWWQARRVHSDS
ETDDIGFIPSKRRVERREWSRLKAKDWGSSSGSQGREDSVLSYETVTQMEVHYARPIIIL
GPTKDRANDDLLSEFPDKFGSCVPHTTRPKREYEIDGRDYHFVSSREKMEKDIQAHKFIE
AGQYNSHLYGTSVQSVREVAEQGKHCILDVSANAVRRLQAAHLHPIAIFIRPRSLENVLE
INKRITEEQARKAFDRATKLEQEFTECFSAIVEGDSFEEIYHKVKRVIEDLSGPYIWVPA
RERL
Number of residues724
Molecular Weight80494.615
Theoretical pINot Available
GO Classification
Functions
  • PDZ domain binding
  • acetylcholine receptor binding
  • protein C-terminus binding
  • beta-1 adrenergic receptor binding
  • kinase binding
  • D1 dopamine receptor binding
  • ionotropic glutamate receptor binding
  • neuroligin family protein binding
  • guanylate kinase activity
  • scaffold protein binding
  • P2Y1 nucleotide receptor binding
  • protein complex binding
  • protein phosphatase binding
Processes
  • vascular endothelial growth factor receptor signaling pathway
  • synaptic vesicle maturation
  • protein complex assembly
  • vocalization behavior
  • nervous system development
  • positive regulation of synaptic transmission
  • locomotory exploration behavior
  • regulation of N-methyl-D-aspartate selective glutamate receptor activity
  • learning
  • axon guidance
  • epidermal growth factor receptor signaling pathway
  • social behavior
  • innate immune response
  • negative regulation of receptor internalization
  • signal transduction
  • positive regulation of cytosolic calcium ion concentration
  • Fc-epsilon receptor signaling pathway
  • activation of MAPKK activity
  • GMP metabolic process
  • neuromuscular process controlling balance
  • AMPA glutamate receptor clustering
  • fibroblast growth factor receptor signaling pathway
  • regulation of long-term neuronal synaptic plasticity
  • dendritic spine morphogenesis
  • insulin receptor signaling pathway
  • small GTPase mediated signal transduction
  • GDP metabolic process
  • MAPK cascade
  • synaptic transmission
  • protein localization to synapse
  • neurotrophin TRK receptor signaling pathway
  • establishment of protein localization
  • positive regulation of excitatory postsynaptic potential
  • receptor localization to synapse
  • Ras protein signal transduction
  • regulation of grooming behavior
Components
  • cell junction
  • neuron spine
  • synapse
  • excitatory synapse
  • cytosol
  • postsynaptic density
  • neuron projection terminus
  • extrinsic component of cytoplasmic side of plasma membrane
  • dendrite cytoplasm
  • neuronal postsynaptic density
  • cortical cytoskeleton
  • cytoplasm
  • endocytic vesicle membrane
  • postsynaptic membrane
  • endoplasmic reticulum
  • plasma membrane
  • cerebellar mossy fiber
  • dendritic spine
  • juxtaparanode region of axon
  • synaptic vesicle
  • AMPA glutamate receptor complex
General FunctionScaffold protein binding
Specific FunctionInteracts with the cytoplasmic tail of NMDA receptor subunits and shaker-type potassium channels. Required for synaptic plasticity associated with NMDA receptor signaling. Overexpression or depletion of DLG4 changes the ratio of excitatory to inhibitory synapses in hippocampal neurons. May reduce the amplitude of ASIC3 acid-evoked currents by retaining the channel intracellularly. May regulate the intracellular trafficking of ADR1B (By similarity).
Pfam Domain Function
Transmembrane RegionsNot Available
GenBank Protein IDNot Available
UniProtKB IDP78352
UniProtKB Entry NameDLG4_HUMAN
Cellular LocationCell membrane
Gene sequence
>lcl|BSEQ0013164|Disks large homolog 4 (DLG4)
ATGGACTGTCTCTGTATAGTGACAACCAAGAAATACCGCTACCAAGATGAAGACACGCCC
CCTCTGGAGCACAGCCCGGCCCACCTCCCCAACCAGGCCAATTCTCCCCCAGTGATTGTC
AACACAGATACCCTAGAAGCCCCAGGATATGTGAACGGGACCGAGGGGGAGATGGAATAC
GAGGAAATCACATTGGAAAGGGGTAACTCAGGTCTGGGCTTCAGCATCGCAGGTGGCACT
GACAACCCACACATCGGTGACGACCCATCCATTTTCATCACCAAGATCATTCCTGGTGGG
GCTGCGGCCCAGGATGGCCGCCTCAGGGTCAACGACAGCATCCTGTTTGTAAATGAAGTG
GACGTGCGCGAGGTGACCCACTCAGCGGCGGTGGAAGCCCTCAAAGAGGCAGGCTCCATC
GTTCGCCTCTATGTCATGCGCCGGAAGCCCCCGGCTGAGAAGGTCATGGAGATCAAGCTC
ATCAAGGGGCCTAAAGGTCTTGGCTTCAGCATCGCAGGGGGCGTAGGGAACCAGCACATC
CCAGGAGATAATAGCATCTATGTAACAAAGATCATCGAAGGGGGTGCTGCCCACAAGGAT
GGGAGGTTGCAGATTGGAGACAAGATCCTGGCGGTCAACAGTGTGGGGCTAGAGGACGTC
ATGCATGAAGATGCTGTGGCAGCCCTGAAGAACACGTATGATGTTGTCTACCTAAAGGTG
GCCAAGCCCAGCAATGCCTACCTGAGTGACAGCTATGCTCCCCCAGACATCACAACCTCT
TATTCCCAGCACCTGGACAATGAGATCAGTCACAGCAGCTACCTGGGCACCGACTACCCC
ACAGCCATGACCCCCACTTCCCCTCGGCGCTACTCTCCAGTGGCCAAGGACCTGCTCGGG
GAGGAAGACATTCCCCGAGAACCGAGGCGAATTGTGATCCACCGGGGCTCCACGGGCCTG
GGCTTCAACATCGTGGGTGGCGAGGACGGTGAAGGCATCTTCATCTCCTTTATCCTGGCC
GGGGGCCCTGCAGACCTCAGTGGGGAGCTGCGGAAGGGGGACCAGATCCTGTCGGTCAAC
GGTGTGGACCTCCGAAATGCCAGCCATGAGCAGGCTGCCATTGCCCTGAAGAATGCGGGT
CAGACGGTCACGATCATCGCTCAGTATAAACCAGAAGAGTACAGCCGATTCGAGGCCAAG
ATCCACGACCTTCGGGAACAGCTCATGAACAGCAGCCTGGGCTCAGGGACTGCGTCCCTG
CGGAGCAACCCCAAAAGGGGTTTCTACATCAGGGCCCTGTTTGATTACGACAAGACCAAG
GACTGCGGCTTCCTGAGCCAGGCCCTGAGCTTCCGCTTTGGGGATGTGCTGCATGTCATC
GATGCTAGTGATGAGGAGTGGTGGCAGGCACGGCGGGTCCACTCTGACAGTGAGACCGAC
GACATTGGGTTCATCCCCAGCAAACGGCGGGTTGAGCGACGAGAGTGGTCAAGGTTAAAG
GCCAAGGACTGGGGCTCCAGCTCTGGATCGCAGGGTCGAGAAGACTCGGTTCTGAGCTAC
GAGACAGTGACGCAGATGGAAGTGCACTATGCTCGCCCCATCATCATCCTTGGGCCCACC
AAGGACCGCGCCAACGATGATCTTCTCTCCGAGTTCCCCGACAAGTTTGGATCCTGTGTT
CCCCATACGACACGGCCCAAGCGGGAGTATGAGATAGATGGCCGGGATTACCACTTTGTG
TCGTCCCGGGAGAAAATGGAGAAGGACATTCAGGCGCACAAGTTCATTGAGGCCGGCCAG
TACAACAGCCACCTCTATGGGACCAGCGTCCAGTCCGTGCGAGAGGTGGCAGAGCAGGGG
AAGCACTGCATCCTCGATGTCTCGGCCAATGCCGTGCGGCGGCTGCAGGCGGCCCACCTG
CACCCCATCGCCATCTTCATCCGCCCCCGCTCCCTGGAGAATGTGCTAGAGATTAACAAG
CGGATCACAGAGGAGCAAGCCCGCAAAGCCTTCGACAGAGCCACCAAGCTGGAGCAGGAG
TTCACAGAGTGCTTCTCAGCCATCGTGGAGGGTGACAGCTTTGAGGAGATCTACCACAAG
GTGAAGCGTGTCATCGAGGACCTCTCAGGCCCCTACATCTGGGTTCCAGCCCGAGAGAGA
CTCTGA
GenBank Gene IDNot Available
GeneCard IDNot Available
GenAtlas IDNot Available
HGNC IDHGNC:2903
Chromosome Location17
LocusNot Available
References
  1. Stathakis DG, Hoover KB, You Z, Bryant PJ: Human postsynaptic density-95 (PSD95): location of the gene (DLG4) and possible function in nonneural as well as in neural tissues. Genomics. 1997 Aug 15;44(1):71-82. 9286702
  2. Stathakis DG, Udar N, Sandgren O, Andreasson S, Bryant PJ, Small K, Forsman-Semb K: Genomic organization of human DLG4, the gene encoding postsynaptic density 95. J Neurochem. 1999 Dec;73(6):2250-65. 10582582
  3. Ota T, Suzuki Y, Nishikawa T, Otsuki T, Sugiyama T, Irie R, Wakamatsu A, Hayashi K, Sato H, Nagai K, Kimura K, Makita H, Sekine M, Obayashi M, Nishi T, Shibahara T, Tanaka T, Ishii S, Yamamoto J, Saito K, Kawai Y, Isono Y, Nakamura Y, Nagahari K, Murakami K, Yasuda T, Iwayanagi T, Wagatsuma M, Shiratori A, Sudo H, Hosoiri T, Kaku Y, Kodaira H, Kondo H, Sugawara M, Takahashi M, Kanda K, Yokoi T, Furuya T, Kikkawa E, Omura Y, Abe K, Kamihara K, Katsuta N, Sato K, Tanikawa M, Yamazaki M, Ninomiya K, Ishibashi T, Yamashita H, Murakawa K, Fujimori K, Tanai H, Kimata M, Watanabe M, Hiraoka S, Chiba Y, Ishida S, Ono Y, Takiguchi S, Watanabe S, Yosida M, Hotuta T, Kusano J, Kanehori K, Takahashi-Fujii A, Hara H, Tanase TO, Nomura Y, Togiya S, Komai F, Hara R, Takeuchi K, Arita M, Imose N, Musashino K, Yuuki H, Oshima A, Sasaki N, Aotsuka S, Yoshikawa Y, Matsunawa H, Ichihara T, Shiohata N, Sano S, Moriya S, Momiyama H, Satoh N, Takami S, Terashima Y, Suzuki O, Nakagawa S, Senoh A, Mizoguchi H, Goto Y, Shimizu F, Wakebe H, Hishigaki H, Watanabe T, Sugiyama A, Takemoto M, Kawakami B, Yamazaki M, Watanabe K, Kumagai A, Itakura S, Fukuzumi Y, Fujimori Y, Komiyama M, Tashiro H, Tanigami A, Fujiwara T, Ono T, Yamada K, Fujii Y, Ozaki K, Hirao M, Ohmori Y, Kawabata A, Hikiji T, Kobatake N, Inagaki H, Ikema Y, Okamoto S, Okitani R, Kawakami T, Noguchi S, Itoh T, Shigeta K, Senba T, Matsumura K, Nakajima Y, Mizuno T, Morinaga M, Sasaki M, Togashi T, Oyama M, Hata H, Watanabe M, Komatsu T, Mizushima-Sugano J, Satoh T, Shirai Y, Takahashi Y, Nakagawa K, Okumura K, Nagase T, Nomura N, Kikuchi H, Masuho Y, Yamashita R, Nakai K, Yada T, Nakamura Y, Ohara O, Isogai T, Sugano S: Complete sequencing and characterization of 21,243 full-length human cDNAs. Nat Genet. 2004 Jan;36(1):40-5. Epub 2003 Dec 21. 14702039
  4. Zody MC, Garber M, Adams DJ, Sharpe T, Harrow J, Lupski JR, Nicholson C, Searle SM, Wilming L, Young SK, Abouelleil A, Allen NR, Bi W, Bloom T, Borowsky ML, Bugalter BE, Butler J, Chang JL, Chen CK, Cook A, Corum B, Cuomo CA, de Jong PJ, DeCaprio D, Dewar K, FitzGerald M, Gilbert J, Gibson R, Gnerre S, Goldstein S, Grafham DV, Grocock R, Hafez N, Hagopian DS, Hart E, Norman CH, Humphray S, Jaffe DB, Jones M, Kamal M, Khodiyar VK, LaButti K, Laird G, Lehoczky J, Liu X, Lokyitsang T, Loveland J, Lui A, Macdonald P, Major JE, Matthews L, Mauceli E, McCarroll SA, Mihalev AH, Mudge J, Nguyen C, Nicol R, O'Leary SB, Osoegawa K, Schwartz DC, Shaw-Smith C, Stankiewicz P, Steward C, Swarbreck D, Venkataraman V, Whittaker CA, Yang X, Zimmer AR, Bradley A, Hubbard T, Birren BW, Rogers J, Lander ES, Nusbaum C: DNA sequence of human chromosome 17 and analysis of rearrangement in the human lineage. Nature. 2006 Apr 20;440(7087):1045-9. 16625196
  5. Kim E, Niethammer M, Rothschild A, Jan YN, Sheng M: Clustering of Shaker-type K+ channels by interaction with a family of membrane-associated guanylate kinases. Nature. 1995 Nov 2;378(6552):85-8. 7477295
  6. Irie M, Hata Y, Takeuchi M, Ichtchenko K, Toyoda A, Hirao K, Takai Y, Rosahl TW, Sudhof TC: Binding of neuroligins to PSD-95. Science. 1997 Sep 5;277(5331):1511-5. 9278515
  7. Hanada T, Lin L, Tibaldi EV, Reinherz EL, Chishti AH: GAKIN, a novel kinesin-like protein associates with the human homologue of the Drosophila discs large tumor suppressor in T lymphocytes. J Biol Chem. 2000 Sep 15;275(37):28774-84. 10859302
  8. Garcia RA, Vasudevan K, Buonanno A: The neuregulin receptor ErbB-4 interacts with PDZ-containing proteins at neuronal synapses. Proc Natl Acad Sci U S A. 2000 Mar 28;97(7):3596-601. 10725395
  9. Chetkovich DM, Bunn RC, Kuo SH, Kawasaki Y, Kohwi M, Bredt DS: Postsynaptic targeting of alternative postsynaptic density-95 isoforms by distinct mechanisms. J Neurosci. 2002 Aug 1;22(15):6415-25. 12151521
  10. Ko J, Kim S, Chung HS, Kim K, Han K, Kim H, Jun H, Kaang BK, Kim E: SALM synaptic cell adhesion-like molecules regulate the differentiation of excitatory synapses. Neuron. 2006 Apr 20;50(2):233-45. 16630835
  11. Lee HW, Choi J, Shin H, Kim K, Yang J, Na M, Choi SY, Kang GB, Eom SH, Kim H, Kim E: Preso, a novel PSD-95-interacting FERM and PDZ domain protein that regulates dendritic spine morphogenesis. J Neurosci. 2008 Dec 31;28(53):14546-56. doi: 10.1523/JNEUROSCI.3112-08.2008. 19118189
  12. Fujita-Jimbo E, Tanabe Y, Yu Z, Kojima K, Mori M, Li H, Iwamoto S, Yamagata T, Momoi MY, Momoi T: The association of GPR85 with PSD-95-neuroligin complex and autism spectrum disorder: a molecular analysis. Mol Autism. 2015 Mar 13;6:17. doi: 10.1186/s13229-015-0012-5. eCollection 2015. 25780553
  13. Piserchio A, Pellegrini M, Mehta S, Blackman SM, Garcia EP, Marshall J, Mierke DF: The PDZ1 domain of SAP90. Characterization of structure and binding. J Biol Chem. 2002 Mar 1;277(9):6967-73. Epub 2001 Dec 14. 11744724