7xw7: Difference between revisions
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The | ==TSHR-K1-70 complex== | ||
<StructureSection load='7xw7' size='340' side='right'caption='[[7xw7]], [[Resolution|resolution]] 5.50Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[7xw7]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7XW7 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7XW7 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 5.5Å</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=7xw7 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7xw7 OCA], [https://pdbe.org/7xw7 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7xw7 RCSB], [https://www.ebi.ac.uk/pdbsum/7xw7 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7xw7 ProSAT]</span></td></tr> | |||
</table> | |||
== Disease == | |||
[https://www.uniprot.org/uniprot/TSHR_HUMAN TSHR_HUMAN] Note=Defects in TSHR are found in patients affected by hyperthyroidism with different etiologies. Somatic, constitutively activating TSHR mutations and/or constitutively activating G(s)alpha mutations have been identified in toxic thyroid nodules (TTNs) that are the predominant cause of hyperthyroidism in iodine deficient areas. These mutations lead to TSH independent activation of the cAMP cascade resulting in thyroid growth and hormone production. TSHR mutations are found in autonomously functioning thyroid nodules (AFTN), toxic multinodular goiter (TMNG) and hyperfunctioning thyroid adenomas (HTA). TMNG encompasses a spectrum of different clinical entities, ranging from a single hyperfunctioning nodule within an enlarged thyroid, to multiple hyperfunctioning areas scattered throughout the gland. HTA are discrete encapsulated neoplasms characterized by TSH-independent autonomous growth, hypersecretion of thyroid hormones, and TSH suppression. Defects in TSHR are also a cause of thyroid neoplasms (papillary and follicular cancers).<ref>PMID:11887032</ref> <ref>PMID:12593721</ref> <ref>PMID:12930595</ref> Note=Autoantibodies against TSHR are directly responsible for the pathogenesis and hyperthyroidism of Graves disease. Antibody interaction with TSHR results in an uncontrolled receptor stimulation.<ref>PMID:11887032</ref> <ref>PMID:12593721</ref> <ref>PMID:12930595</ref> Defects in TSHR are the cause of congenital hypothyroidism non-goitrous type 1 (CHNG1) [MIM:[https://omim.org/entry/275200 275200]; also known as congenital hypothyroidism due to TSH resistance. CHNG1 is a non-autoimmune condition characterized by resistance to thyroid-stimulating hormone (TSH) leading to increased levels of plasma TSH and low levels of thyroid hormone. CHNG1 presents variable severity depending on the completeness of the defect. Most patients are euthyroid and asymptomatic, with a normal sized thyroid gland. Only a subset of patients develop hypothyroidism and present a hypoplastic thyroid gland.<ref>PMID:11887032</ref> <ref>PMID:12593721</ref> <ref>PMID:12930595</ref> <ref>PMID:7528344</ref> <ref>PMID:8954020</ref> <ref>PMID:9100579</ref> <ref>PMID:9329388</ref> <ref>PMID:9185526</ref> <ref>PMID:10720030</ref> <ref>PMID:11095460</ref> <ref>PMID:11442002</ref> <ref>PMID:12050212</ref> <ref>PMID:14725684</ref> <ref>PMID:15531543</ref> Defects in TSHR are the cause of familial gestational hyperthyroidism (HTFG) [MIM:[https://omim.org/entry/603373 603373]. HTFG is a condition characterized by abnormally high levels of serum thyroid hormones occurring during early pregnancy.<ref>PMID:11887032</ref> <ref>PMID:12593721</ref> <ref>PMID:12930595</ref> <ref>PMID:9854118</ref> Defects in TSHR are the cause of hyperthyroidism non-autoimmune (HTNA) [MIM:[https://omim.org/entry/609152 609152]. It is a condition characterized by abnormally high levels of serum thyroid hormones, thyroid hyperplasia, goiter and lack of anti-thyroid antibodies. Typical features of Graves disease such as exophthalmia, myxedema, antibodies anti-TSH receptor and lymphocytic infiltration of the thyroid gland are absent.<ref>PMID:11887032</ref> <ref>PMID:12593721</ref> <ref>PMID:12930595</ref> <ref>PMID:7920658</ref> <ref>PMID:7800007</ref> <ref>PMID:8636266</ref> <ref>PMID:8964822</ref> <ref>PMID:9360555</ref> <ref>PMID:9398746</ref> <ref>PMID:9349581</ref> <ref>PMID:9589634</ref> <ref>PMID:10199795</ref> <ref>PMID:10852462</ref> <ref>PMID:11127522</ref> <ref>PMID:11081252</ref> <ref>PMID:11201847</ref> <ref>PMID:11517004</ref> <ref>PMID:11549687</ref> <ref>PMID:15163335</ref> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/TSHR_HUMAN TSHR_HUMAN] Receptor for thyrothropin. Plays a central role in controlling thyroid cell metabolism. The activity of this receptor is mediated by G proteins which activate adenylate cyclase. Also acts as a receptor for thyrostimulin (GPA2+GPB5).<ref>PMID:12045258</ref> | |||
==See Also== | |||
*[[Antibody 3D structures|Antibody 3D structures]] | |||
*[[Monoclonal Antibodies 3D structures|Monoclonal Antibodies 3D structures]] | |||
[[Category: | == References == | ||
[[Category: | <references/> | ||
[[Category: | __TOC__ | ||
[[Category: Duan | </StructureSection> | ||
[[Category: | [[Category: Homo sapiens]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Jiang | [[Category: Cheng X]] | ||
[[Category: | [[Category: Duan J]] | ||
[[Category: | [[Category: He X]] | ||
[[Category: | [[Category: Ji Y]] | ||
[[Category: | [[Category: Jiang H]] | ||
[[Category: | [[Category: Jiang Y]] | ||
[[Category: | [[Category: Luan X]] | ||
[[Category: Xu HE]] | |||
[[Category: Xu P]] | |||
[[Category: Ye J]] | |||
[[Category: Yuan Q]] | |||
[[Category: Zhang S]] |
Latest revision as of 17:59, 13 March 2024
TSHR-K1-70 complexTSHR-K1-70 complex
Structural highlights
DiseaseTSHR_HUMAN Note=Defects in TSHR are found in patients affected by hyperthyroidism with different etiologies. Somatic, constitutively activating TSHR mutations and/or constitutively activating G(s)alpha mutations have been identified in toxic thyroid nodules (TTNs) that are the predominant cause of hyperthyroidism in iodine deficient areas. These mutations lead to TSH independent activation of the cAMP cascade resulting in thyroid growth and hormone production. TSHR mutations are found in autonomously functioning thyroid nodules (AFTN), toxic multinodular goiter (TMNG) and hyperfunctioning thyroid adenomas (HTA). TMNG encompasses a spectrum of different clinical entities, ranging from a single hyperfunctioning nodule within an enlarged thyroid, to multiple hyperfunctioning areas scattered throughout the gland. HTA are discrete encapsulated neoplasms characterized by TSH-independent autonomous growth, hypersecretion of thyroid hormones, and TSH suppression. Defects in TSHR are also a cause of thyroid neoplasms (papillary and follicular cancers).[1] [2] [3] Note=Autoantibodies against TSHR are directly responsible for the pathogenesis and hyperthyroidism of Graves disease. Antibody interaction with TSHR results in an uncontrolled receptor stimulation.[4] [5] [6] Defects in TSHR are the cause of congenital hypothyroidism non-goitrous type 1 (CHNG1) [MIM:275200; also known as congenital hypothyroidism due to TSH resistance. CHNG1 is a non-autoimmune condition characterized by resistance to thyroid-stimulating hormone (TSH) leading to increased levels of plasma TSH and low levels of thyroid hormone. CHNG1 presents variable severity depending on the completeness of the defect. Most patients are euthyroid and asymptomatic, with a normal sized thyroid gland. Only a subset of patients develop hypothyroidism and present a hypoplastic thyroid gland.[7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] Defects in TSHR are the cause of familial gestational hyperthyroidism (HTFG) [MIM:603373. HTFG is a condition characterized by abnormally high levels of serum thyroid hormones occurring during early pregnancy.[21] [22] [23] [24] Defects in TSHR are the cause of hyperthyroidism non-autoimmune (HTNA) [MIM:609152. It is a condition characterized by abnormally high levels of serum thyroid hormones, thyroid hyperplasia, goiter and lack of anti-thyroid antibodies. Typical features of Graves disease such as exophthalmia, myxedema, antibodies anti-TSH receptor and lymphocytic infiltration of the thyroid gland are absent.[25] [26] [27] [28] [29] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [40] [41] [42] [43] FunctionTSHR_HUMAN Receptor for thyrothropin. Plays a central role in controlling thyroid cell metabolism. The activity of this receptor is mediated by G proteins which activate adenylate cyclase. Also acts as a receptor for thyrostimulin (GPA2+GPB5).[44] See AlsoReferences
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