7emn: Difference between revisions
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<StructureSection load='7emn' size='340' side='right'caption='[[7emn]], [[Resolution|resolution]] 3.00Å' scene=''> | <StructureSection load='7emn' size='340' side='right'caption='[[7emn]], [[Resolution|resolution]] 3.00Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[7emn]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/ | <table><tr><td colspan='2'>[[7emn]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=6ihz 6ihz]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7EMN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7EMN FirstGlance]. <br> | ||
</td></tr><tr id=' | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3Å</td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=7emn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7emn OCA], [https://pdbe.org/7emn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7emn RCSB], [https://www.ebi.ac.uk/pdbsum/7emn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7emn ProSAT]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=7emn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7emn OCA], [https://pdbe.org/7emn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7emn RCSB], [https://www.ebi.ac.uk/pdbsum/7emn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7emn ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Disease == | == Disease == | ||
[https://www.uniprot.org/uniprot/PTN11_HUMAN PTN11_HUMAN] Defects in PTPN11 are the cause of LEOPARD syndrome type 1 (LEOPARD1) [MIM:[https://omim.org/entry/151100 151100]. It is an autosomal dominant disorder allelic with Noonan syndrome. The acronym LEOPARD stands for lentigines, electrocardiographic conduction abnormalities, ocular hypertelorism, pulmonic stenosis, abnormalities of genitalia, retardation of growth, and deafness.<ref>PMID:12058348</ref> <ref>PMID:14961557</ref> <ref>PMID:15389709</ref> <ref>PMID:15520399</ref> <ref>PMID:15121796</ref> <ref>PMID:15690106</ref> <ref>PMID:16679933</ref> Defects in PTPN11 are the cause of Noonan syndrome type 1 (NS1) [MIM:[https://omim.org/entry/163950 163950]. Noonan syndrome (NS) is a disorder characterized by dysmorphic facial features, short stature, hypertelorism, cardiac anomalies, deafness, motor delay, and a bleeding diathesis. Some patients with Noonan syndrome type 1 develop multiple giant cell lesions of the jaw or other bony or soft tissues, which are classified as pigmented villomoduolar synovitis (PVNS) when occurring in the jaw or joints. Note=Mutations in PTPN11 account for more than 50% of the cases. Rarely, NS is associated with juvenile myelomonocytic leukemia (JMML). NS1 inheritance is autosomal dominant.<ref>PMID:11704759</ref> <ref>PMID:11992261</ref> <ref>PMID:12325025</ref> <ref>PMID:12161469</ref> <ref>PMID:12529711</ref> <ref>PMID:12634870</ref> <ref>PMID:12739139</ref> <ref>PMID:12960218</ref> <ref>PMID:12717436</ref> <ref>PMID:15384080</ref> <ref>PMID:15948193</ref> <ref>PMID:19020799</ref> Defects in PTPN11 are a cause of juvenile myelomonocytic leukemia (JMML) [MIM:[https://omim.org/entry/607785 607785]. JMML is a pediatric myelodysplastic syndrome that constitutes approximately 30% of childhood cases of myelodysplastic syndrome (MDS) and 2% of leukemia. It is characterized by leukocytosis with tissue infiltration and in vitro hypersensitivity of myeloid progenitors to granulocyte-macrophage colony stimulating factor.<ref>PMID:12717436</ref> Defects in PTPN11 are a cause of metachondromatosis (MC) [MIM:[https://omim.org/entry/156250 156250]. It is a skeletal disorder with radiologic fetarures of both multiple exostoses and Ollier disease, characterized by the presence of multiple enchondromas and osteochondroma-like lesions.<ref>PMID:20577567</ref> | |||
== Function == | == Function == | ||
[https://www.uniprot.org/uniprot/PTN11_HUMAN PTN11_HUMAN] Acts downstream of various receptor and cytoplasmic protein tyrosine kinases to participate in the signal transduction from the cell surface to the nucleus. Dephosphorylates ROCK2 at Tyr-722 resulting in stimulatation of its RhoA binding activity.<ref>PMID:10655584</ref> <ref>PMID:18829466</ref> <ref>PMID:18559669</ref> | |||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Homo sapiens]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: Liu C]] | |||
[[Category: Liu | [[Category: Luo F]] | ||
[[Category: Luo | [[Category: Xie JJ]] | ||
[[Category: Xie | [[Category: Zhu JD]] | ||
[[Category: Zhu | |||
Latest revision as of 19:56, 29 November 2023
The atomic structure of SHP2 E76A mutantThe atomic structure of SHP2 E76A mutant
Structural highlights
DiseasePTN11_HUMAN Defects in PTPN11 are the cause of LEOPARD syndrome type 1 (LEOPARD1) [MIM:151100. It is an autosomal dominant disorder allelic with Noonan syndrome. The acronym LEOPARD stands for lentigines, electrocardiographic conduction abnormalities, ocular hypertelorism, pulmonic stenosis, abnormalities of genitalia, retardation of growth, and deafness.[1] [2] [3] [4] [5] [6] [7] Defects in PTPN11 are the cause of Noonan syndrome type 1 (NS1) [MIM:163950. Noonan syndrome (NS) is a disorder characterized by dysmorphic facial features, short stature, hypertelorism, cardiac anomalies, deafness, motor delay, and a bleeding diathesis. Some patients with Noonan syndrome type 1 develop multiple giant cell lesions of the jaw or other bony or soft tissues, which are classified as pigmented villomoduolar synovitis (PVNS) when occurring in the jaw or joints. Note=Mutations in PTPN11 account for more than 50% of the cases. Rarely, NS is associated with juvenile myelomonocytic leukemia (JMML). NS1 inheritance is autosomal dominant.[8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] Defects in PTPN11 are a cause of juvenile myelomonocytic leukemia (JMML) [MIM:607785. JMML is a pediatric myelodysplastic syndrome that constitutes approximately 30% of childhood cases of myelodysplastic syndrome (MDS) and 2% of leukemia. It is characterized by leukocytosis with tissue infiltration and in vitro hypersensitivity of myeloid progenitors to granulocyte-macrophage colony stimulating factor.[20] Defects in PTPN11 are a cause of metachondromatosis (MC) [MIM:156250. It is a skeletal disorder with radiologic fetarures of both multiple exostoses and Ollier disease, characterized by the presence of multiple enchondromas and osteochondroma-like lesions.[21] FunctionPTN11_HUMAN Acts downstream of various receptor and cytoplasmic protein tyrosine kinases to participate in the signal transduction from the cell surface to the nucleus. Dephosphorylates ROCK2 at Tyr-722 resulting in stimulatation of its RhoA binding activity.[22] [23] [24] Publication Abstract from PubMedThe protein tyrosine phosphatase SHP2 mediates multiple signal transductions in various cellular pathways, controlled by a variety of upstream inputs. SHP2 dysregulation is causative of different types of cancers and developmental disorders, making it a promising drug target. However, how SHP2 is modulated by its different regulators remains largely unknown. Here, we use single-molecule fluorescence resonance energy transfer (smFRET) and molecular dynamics (MD) simulations to investigate this question. We identify a partially-open, semi-active conformation of SHP2 that is intermediate between the known open and closed states. We further demonstrate a "multiple gear" regulatory mechanism, in which different activators (e.g. IRS-1 and CagA), oncogenic mutations (e.g. E76A) and allosteric inhibitors (e.g. SHP099) can shift the equilibrium of the three conformational states and regulate SHP2 activity to different levels. Our work reveals the essential role of the intermediate state in fine-tuning the activity of SHP2, which may provide new opportunities for drug development for relevant cancers. A novel partially-open state of SHP2 points to a "multiple gear" regulation mechanism.,Tao Y, Xie J, Zhong Q, Wang Y, Zhang S, Luo F, Wen F, Xie J, Zhao J, Sun X, Long H, Ma J, Zhang Q, Long J, Fang X, Lu Y, Li D, Li M, Zhu J, Sun B, Li G, Diao J, Liu C J Biol Chem. 2021 Mar 12:100538. doi: 10.1016/j.jbc.2021.100538. PMID:33722610[25] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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