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| | <StructureSection load='6wax' size='340' side='right'caption='[[6wax]], [[Resolution|resolution]] 1.50Å' scene=''> | | <StructureSection load='6wax' size='340' side='right'caption='[[6wax]], [[Resolution|resolution]] 1.50Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[6wax]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6WAX OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=6WAX FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6wax]] is a 2 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=6WAX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6WAX FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.5Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">RASA1, GAP, RASA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=6wax FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6wax OCA], [http://pdbe.org/6wax PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6wax RCSB], [http://www.ebi.ac.uk/pdbsum/6wax PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6wax 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=6wax FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6wax OCA], [https://pdbe.org/6wax PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6wax RCSB], [https://www.ebi.ac.uk/pdbsum/6wax PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6wax ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Disease == | | == Disease == |
| - | [[http://www.uniprot.org/uniprot/RASA1_HUMAN RASA1_HUMAN]] Note=Mutations in the SH2 domain of RASA seem to be oncogenic and cause basal cell carcinomas. Defects in RASA1 are the cause of capillary malformation-arteriovenous malformation (CMAVM) [MIM:[http://omim.org/entry/608354 608354]]. CMAVM is a disorder characterized by atypical capillary malformations that are multiple, small, round to oval in shape and pinkish red in color. These capillary malformations are associated with either arteriovenous malformation, arteriovenous fistula, or Parkes Weber syndrome.<ref>PMID:14639529</ref> Defects in RASA1 are a cause of Parkes Weber syndrome (PKWS) [MIM:[http://omim.org/entry/608355 608355]]. PKWS is a disorder characterized by a cutaneous flush with underlying multiple micro-arteriovenous fistulas, in association with soft tissue and skeletal hypertrophy of the affected limb. | + | [https://www.uniprot.org/uniprot/RASA1_HUMAN RASA1_HUMAN] Note=Mutations in the SH2 domain of RASA seem to be oncogenic and cause basal cell carcinomas. Defects in RASA1 are the cause of capillary malformation-arteriovenous malformation (CMAVM) [MIM:[https://omim.org/entry/608354 608354]. CMAVM is a disorder characterized by atypical capillary malformations that are multiple, small, round to oval in shape and pinkish red in color. These capillary malformations are associated with either arteriovenous malformation, arteriovenous fistula, or Parkes Weber syndrome.<ref>PMID:14639529</ref> Defects in RASA1 are a cause of Parkes Weber syndrome (PKWS) [MIM:[https://omim.org/entry/608355 608355]. PKWS is a disorder characterized by a cutaneous flush with underlying multiple micro-arteriovenous fistulas, in association with soft tissue and skeletal hypertrophy of the affected limb. |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/RASA1_HUMAN RASA1_HUMAN]] Inhibitory regulator of the Ras-cyclic AMP pathway. Stimulates the GTPase of normal but not oncogenic Ras p21; this stimulation may be further increased in the presence of NCK1.<ref>PMID:8360177</ref> <ref>PMID:11389730</ref> | + | [https://www.uniprot.org/uniprot/RASA1_HUMAN RASA1_HUMAN] Inhibitory regulator of the Ras-cyclic AMP pathway. Stimulates the GTPase of normal but not oncogenic Ras p21; this stimulation may be further increased in the presence of NCK1.<ref>PMID:8360177</ref> <ref>PMID:11389730</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
| Line 21: |
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| | </div> | | </div> |
| | <div class="pdbe-citations 6wax" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 6wax" style="background-color:#fffaf0;"></div> |
| | + | |
| | + | ==See Also== |
| | + | *[[Ras GTPase activating protein|Ras GTPase activating protein]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Human]] | + | [[Category: Homo sapiens]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Boggon, T J]] | + | [[Category: Boggon TJ]] |
| - | [[Category: Chehayeb, R Jaber]] | + | [[Category: Jaber Chehayeb R]] |
| - | [[Category: Stiegler, A L]] | + | [[Category: Stiegler AL]] |
| - | [[Category: Wang, J]] | + | [[Category: Wang J]] |
| - | [[Category: Phosphopeptide]]
| + | |
| - | [[Category: Phosphotyrosine]]
| + | |
| - | [[Category: Rasgap]]
| + | |
| - | [[Category: Sh2 domain]]
| + | |
| - | [[Category: Signaling protein]]
| + | |
| Structural highlights
Disease
RASA1_HUMAN Note=Mutations in the SH2 domain of RASA seem to be oncogenic and cause basal cell carcinomas. Defects in RASA1 are the cause of capillary malformation-arteriovenous malformation (CMAVM) [MIM:608354. CMAVM is a disorder characterized by atypical capillary malformations that are multiple, small, round to oval in shape and pinkish red in color. These capillary malformations are associated with either arteriovenous malformation, arteriovenous fistula, or Parkes Weber syndrome.[1] Defects in RASA1 are a cause of Parkes Weber syndrome (PKWS) [MIM:608355. PKWS is a disorder characterized by a cutaneous flush with underlying multiple micro-arteriovenous fistulas, in association with soft tissue and skeletal hypertrophy of the affected limb.
Function
RASA1_HUMAN Inhibitory regulator of the Ras-cyclic AMP pathway. Stimulates the GTPase of normal but not oncogenic Ras p21; this stimulation may be further increased in the presence of NCK1.[2] [3]
Publication Abstract from PubMed
The Src homology 2 (SH2) domain has a highly conserved architecture that recognizes linear phosphotyrosine motifs and is present in a wide range of signaling pathways across different evolutionary taxa. A hallmark of SH2 domains is the arginine residue in the conserved "FLVR" motif that forms a direct salt bridge with bound phosphotyrosine. Here, we solve the X-ray crystal structures of the C-terminal SH2 domain of p120RasGAP (RASA1) in its apo and peptide-bound form. We find that the arginine residue in the FLVR motif does not directly contact pTyr-1087 of a bound phosphopeptide derived from p190RhoGAP; rather, it makes an intramolecular salt bridge to an aspartic acid. Unexpectedly, coordination of phosphotyrosine is achieved by a modified binding pocket which appears early in evolution. Using isothermal titration calorimetry, we find that substitution of the FLVR arginine R377A does not cause a significant loss of phosphopeptide binding, but rather a tandem substitution of R398A (SH2 position betaD4) and K400A (SH2 position betaD6) is required to disrupt the binding. These results indicate a hitherto unrecognized diversity in SH2 domain interactions with phosphotyrosine, and classify the C-terminal SH2 domain of p120RasGAP as "FLVR-unique."
The GTPase-activating protein p120RasGAP has an evolutionarily conserved "FLVR-unique" SH2 domain.,Jaber Chehayeb R, Wang J, Stiegler AL, Boggon TJ J Biol Chem. 2020 Jun 15. pii: RA120.013976. doi: 10.1074/jbc.RA120.013976. PMID:32540970[4]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Eerola I, Boon LM, Mulliken JB, Burrows PE, Dompmartin A, Watanabe S, Vanwijck R, Vikkula M. Capillary malformation-arteriovenous malformation, a new clinical and genetic disorder caused by RASA1 mutations. Am J Hum Genet. 2003 Dec;73(6):1240-9. Epub 2003 Nov 24. PMID:14639529 doi:S0002-9297(07)63977-9
- ↑ Zhang Y, Zhang G, Mollat P, Carles C, Riva M, Frobert Y, Malassine A, Rostene W, Thang DC, Beltchev B, et al.. Purification, characterization, and cellular localization of the 100-kDa human placental GTPase-activating protein. J Biol Chem. 1993 Sep 5;268(25):18875-81. PMID:8360177
- ↑ Giglione C, Gonfloni S, Parmeggiani A. Differential actions of p60c-Src and Lck kinases on the Ras regulators p120-GAP and GDP/GTP exchange factor CDC25Mm. Eur J Biochem. 2001 Jun;268(11):3275-83. PMID:11389730
- ↑ Jaber Chehayeb R, Wang J, Stiegler AL, Boggon TJ. The GTPase-activating protein p120RasGAP has an evolutionarily conserved "FLVR-unique" SH2 domain. J Biol Chem. 2020 Jun 15. pii: RA120.013976. doi: 10.1074/jbc.RA120.013976. PMID:32540970 doi:http://dx.doi.org/10.1074/jbc.RA120.013976
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