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6roz

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Current revision (10:25, 23 October 2024) (edit) (undo)
 
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== Disease ==
== Disease ==
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[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>
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[https://www.uniprot.org/uniprot/PDCD1_HUMAN PDCD1_HUMAN] Systemic lupus erythematosus;Multiple sclerosis. Systemic lupus erythematosus 2 (SLEB2) [MIM:[https://omim.org/entry/605218 605218]: A chronic, relapsing, inflammatory, and often febrile multisystemic disorder of connective tissue, characterized principally by involvement of the skin, joints, kidneys and serosal membranes. It is of unknown etiology, but is thought to represent a failure of the regulatory mechanisms of the autoimmune system. The disease is marked by a wide range of system dysfunctions, an elevated erythrocyte sedimentation rate, and the formation of LE cells in the blood or bone marrow. Note=Disease susceptibility is associated with variations affecting the gene represented in this entry.<ref>PMID:12402038</ref>
== Function ==
== Function ==
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[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>
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[https://www.uniprot.org/uniprot/PDCD1_HUMAN PDCD1_HUMAN] Inhibitory cell surface receptor involved in the regulation of T-cell function during immunity and tolerance. Upon ligand binding, inhibits T-cell effector functions in an antigen-specific manner. Possible cell death inducer, in association with other factors.<ref>PMID:21276005</ref>
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== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==

Current revision

Structure of the N-SH2 domain of the human tyrosine-protein phosphatase non-receptor type 11 in complex with the phosphorylated immune receptor tyrosine-based switch motif

PDB ID 6roz

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