6i3f
From Proteopedia
(Difference between revisions)
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<StructureSection load='6i3f' size='340' side='right' caption='[[6i3f]], [[Resolution|resolution]] 2.55Å' scene=''> | <StructureSection load='6i3f' size='340' side='right' caption='[[6i3f]], [[Resolution|resolution]] 2.55Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[6i3f]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6I3F OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6I3F FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[6i3f]] 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=6I3F OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6I3F FirstGlance]. <br> |
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | ||
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">AGT, SERPINA8 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), REN ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Renin Renin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.23.15 3.4.23.15] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Renin Renin], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.23.15 3.4.23.15] </span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6i3f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6i3f OCA], [http://pdbe.org/6i3f PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6i3f RCSB], [http://www.ebi.ac.uk/pdbsum/6i3f PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6i3f ProSAT]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6i3f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6i3f OCA], [http://pdbe.org/6i3f PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6i3f RCSB], [http://www.ebi.ac.uk/pdbsum/6i3f PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6i3f ProSAT]</span></td></tr> | ||
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== Function == | == Function == | ||
[[http://www.uniprot.org/uniprot/ANGT_HUMAN ANGT_HUMAN]] Essential component of the renin-angiotensin system (RAS), a potent regulator of blood pressure, body fluid and electrolyte homeostasis.<ref>PMID:1132082</ref> <ref>PMID:10619573</ref> <ref>PMID:17138938</ref> Angiotensin-2: acts directly on vascular smooth muscle as a potent vasoconstrictor, affects cardiac contractility and heart rate through its action on the sympathetic nervous system, and alters renal sodium and water absorption through its ability to stimulate the zona glomerulosa cells of the adrenal cortex to synthesize and secrete aldosterone.<ref>PMID:1132082</ref> <ref>PMID:10619573</ref> <ref>PMID:17138938</ref> Angiotensin-3: stimulates aldosterone release.<ref>PMID:1132082</ref> <ref>PMID:10619573</ref> <ref>PMID:17138938</ref> Angiotensin 1-7: is a ligand for the G-protein coupled receptor MAS1 (By similarity). Has vasodilator and antidiuretic effects (By similarity). Has an antithrombotic effect that involves MAS1-mediated release of nitric oxide from platelets (By similarity).<ref>PMID:1132082</ref> <ref>PMID:10619573</ref> <ref>PMID:17138938</ref> [[http://www.uniprot.org/uniprot/RENI_HUMAN RENI_HUMAN]] Renin is a highly specific endopeptidase, whose only known function is to generate angiotensin I from angiotensinogen in the plasma, initiating a cascade of reactions that produce an elevation of blood pressure and increased sodium retention by the kidney. | [[http://www.uniprot.org/uniprot/ANGT_HUMAN ANGT_HUMAN]] Essential component of the renin-angiotensin system (RAS), a potent regulator of blood pressure, body fluid and electrolyte homeostasis.<ref>PMID:1132082</ref> <ref>PMID:10619573</ref> <ref>PMID:17138938</ref> Angiotensin-2: acts directly on vascular smooth muscle as a potent vasoconstrictor, affects cardiac contractility and heart rate through its action on the sympathetic nervous system, and alters renal sodium and water absorption through its ability to stimulate the zona glomerulosa cells of the adrenal cortex to synthesize and secrete aldosterone.<ref>PMID:1132082</ref> <ref>PMID:10619573</ref> <ref>PMID:17138938</ref> Angiotensin-3: stimulates aldosterone release.<ref>PMID:1132082</ref> <ref>PMID:10619573</ref> <ref>PMID:17138938</ref> Angiotensin 1-7: is a ligand for the G-protein coupled receptor MAS1 (By similarity). Has vasodilator and antidiuretic effects (By similarity). Has an antithrombotic effect that involves MAS1-mediated release of nitric oxide from platelets (By similarity).<ref>PMID:1132082</ref> <ref>PMID:10619573</ref> <ref>PMID:17138938</ref> [[http://www.uniprot.org/uniprot/RENI_HUMAN RENI_HUMAN]] Renin is a highly specific endopeptidase, whose only known function is to generate angiotensin I from angiotensinogen in the plasma, initiating a cascade of reactions that produce an elevation of blood pressure and increased sodium retention by the kidney. | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | The renin-angiotensin cascade is a hormone system that regulates blood pressure and fluid balance. Renin-mediated cleavage of the angiotensin I peptide from the N-terminus of angiotensinogen (AGT) is the rate-limiting step of this cascade; however, the detailed molecular mechanism underlying this step is unclear. Here, we solved the crystal structures of glycosylated human AGT (2.30 A resolution), its encounter complex with renin (2.55 A), AGT cleaved in its reactive center loop (RCL; 2.97 A) and spent AGT from which the N-terminal angiotensin peptide was removed (2.63 A). These structures revealed that AGT undergoes profound conformational changes and binds renin through a tail-into-mouth allosteric mechanism that inserts the N-terminus into a pocket equivalent to a hormone binding site on other serpins. These changes fully extended the N-terminal tail, with the scissile bond for angiotensin release docked in renin's active site. Insertion of the N-terminus into this pocket accompanied a complete unwinding of helix H of AGT, which, in turn, formed key interactions with renin in the complementary binding interface. Mutagenesis and kinetic analyses confirmed that renin-mediated production of angiotensin I is controlled by interactions of amino acid residues and glycan components outside renin's active site cleft. Our findings indicate that AGT adapts unique serpin features for hormone delivery and binds renin through concerted movements in the N-terminal tail and in its main body to modulate angiotensin release. These insights provide a structural basis for the development of agents that attenuate angiotensin release by targeting AGT's hormone binding pocket. | ||
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| + | Structural basis for the specificity of renin-mediated angiotensinogen cleavage.,Yan Y, Zhou A, Carrell RW, Read RJ J Biol Chem. 2018 Dec 18. pii: RA118.006608. doi: 10.1074/jbc.RA118.006608. PMID:30563843<ref>PMID:30563843</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 6i3f" style="background-color:#fffaf0;"></div> | ||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
| + | [[Category: Human]] | ||
[[Category: Renin]] | [[Category: Renin]] | ||
[[Category: Read, R J]] | [[Category: Read, R J]] | ||
Revision as of 06:23, 2 January 2019
Crystal structure of the complex of human angiotensinogen and renin at 2.55 Angstrom
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Categories: Human | Renin | Read, R J | Yan, Y | Angiotensinogen | Complex | Glycosylation | Hydrolase
