This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

2wxz

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 13:41, 4 August 2016

CRYSTAL STRUCTURE OF RAT ANGIOTENSINOGEN IN C2 SPACE GROUP

Structural highlights

2wxz is a 2 chain structure with sequence from Buffalo rat. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	2x0b, 2wxy, 2wy1, 2wy0, 2wxw, 2wxx
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[ANGT_RAT] Essential component of the renin-angiotensin system (RAS), a potent regulator of blood pressure, body fluid and electrolyte homeostasis (By similarity).^[1] 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 (By similarity).^[2] Angiotensin-3: stimulates aldosterone release (By similarity).^[3] 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.^[4]

Publication Abstract from PubMed

Blood pressure is critically controlled by angiotensins, which are vasopressor peptides specifically released by the enzyme renin from the tail of angiotensinogen-a non-inhibitory member of the serpin family of protease inhibitors. Although angiotensinogen has long been regarded as a passive substrate, the crystal structures solved here to 2.1 A resolution show that the angiotensin cleavage site is inaccessibly buried in its amino-terminal tail. The conformational rearrangement that makes this site accessible for proteolysis is revealed in our 4.4 A structure of the complex of human angiotensinogen with renin. The co-ordinated changes involved are seen to be critically linked by a conserved but labile disulphide bridge. Here we show that the reduced unbridged form of angiotensinogen is present in the circulation in a near 40:60 ratio with the oxidized sulphydryl-bridged form, which preferentially interacts with receptor-bound renin. We propose that this redox-responsive transition of angiotensinogen to a form that will more effectively release angiotensin at a cellular level contributes to the modulation of blood pressure. Specifically, we demonstrate the oxidative switch of angiotensinogen to its more active sulphydryl-bridged form in the maternal circulation in pre-eclampsia-the hypertensive crisis of pregnancy that threatens the health and survival of both mother and child.

A redox switch in angiotensinogen modulates angiotensin release.,Zhou A, Carrell RW, Murphy MP, Wei Z, Yan Y, Stanley PL, Stein PE, Pipkin FB, Read RJ Nature. 2010 Oct 6. PMID:20927107^[5]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Fraga-Silva RA, Pinheiro SV, Goncalves AC, Alenina N, Bader M, Santos RA. The antithrombotic effect of angiotensin-(1-7) involves mas-mediated NO release from platelets. Mol Med. 2008 Jan-Feb;14(1-2):28-35. PMID:18026570 doi:http://dx.doi.org/10.2119/2007-00073.Fraga-Silva
↑ Fraga-Silva RA, Pinheiro SV, Goncalves AC, Alenina N, Bader M, Santos RA. The antithrombotic effect of angiotensin-(1-7) involves mas-mediated NO release from platelets. Mol Med. 2008 Jan-Feb;14(1-2):28-35. PMID:18026570 doi:http://dx.doi.org/10.2119/2007-00073.Fraga-Silva
↑ Fraga-Silva RA, Pinheiro SV, Goncalves AC, Alenina N, Bader M, Santos RA. The antithrombotic effect of angiotensin-(1-7) involves mas-mediated NO release from platelets. Mol Med. 2008 Jan-Feb;14(1-2):28-35. PMID:18026570 doi:http://dx.doi.org/10.2119/2007-00073.Fraga-Silva
↑ Fraga-Silva RA, Pinheiro SV, Goncalves AC, Alenina N, Bader M, Santos RA. The antithrombotic effect of angiotensin-(1-7) involves mas-mediated NO release from platelets. Mol Med. 2008 Jan-Feb;14(1-2):28-35. PMID:18026570 doi:http://dx.doi.org/10.2119/2007-00073.Fraga-Silva
↑ Zhou A, Carrell RW, Murphy MP, Wei Z, Yan Y, Stanley PL, Stein PE, Pipkin FB, Read RJ. A redox switch in angiotensinogen modulates angiotensin release. Nature. 2010 Oct 6. PMID:20927107 doi:10.1038/nature09505

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2wxz"

@@ Line 1: / Line 1: @@
 ==CRYSTAL STRUCTURE OF RAT ANGIOTENSINOGEN IN C2 SPACE GROUP==
 <StructureSection load='2wxz' size='340' side='right' caption='[[2wxz]], [[Resolution|resolution]] 2.80&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2wxz]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WXZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2WXZ FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2wxz]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2WXZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2WXZ FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2x0b|2x0b]], [[2wxy|2wxy]], [[2wy1|2wy1]], [[2wy0|2wy0]], [[2wxw|2wxw]], [[2wxx|2wxx]]</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=2wxz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2wxz OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2wxz RCSB], [http://www.ebi.ac.uk/pdbsum/2wxz PDBsum]</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=2wxz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2wxz OCA], [http://pdbe.org/2wxz PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2wxz RCSB], [http://www.ebi.ac.uk/pdbsum/2wxz PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2wxz ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 16: / Line 17: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2wxz" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 24: / Line 26: @@
 __TOC__
 </StructureSection>
-[[Category: Rattus norvegicus]]
+[[Category: Buffalo rat]]
 [[Category: Carrell, R W]]
 [[Category: Read, R J]]

2wxz

From Proteopedia

Revision as of 13:41, 4 August 2016

CRYSTAL STRUCTURE OF RAT ANGIOTENSINOGEN IN C2 SPACE GROUP

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox