5nv3

From Proteopedia

(Difference between revisions)

Revision as of 18:46, 15 November 2017

Structure of Rubisco from Rhodobacter sphaeroides in complex with CABP

Structural highlights

5nv3 is a 16 chain structure with sequence from "rhodococcus_capsulatus"_molisch_1907 "rhodococcus capsulatus" molisch 1907. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
NonStd Res:
Gene:	cbbL, cbbL1, rbcL ("Rhodococcus capsulatus" Molisch 1907), cbbS, rbcS ("Rhodococcus capsulatus" Molisch 1907)
Activity:	Ribulose-bisphosphate carboxylase, with EC number 4.1.1.39
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[RBL1_RHOSH] RuBisCO catalyzes two reactions: the carboxylation of D-ribulose 1,5-bisphosphate, the primary event in carbon dioxide fixation, as well as the oxidative fragmentation of the pentose substrate. Both reactions occur simultaneously and in competition at the same active site.[HAMAP-Rule:MF_01338]^[1] [RBS1_RHOSH] RuBisCO catalyzes two reactions: the carboxylation of D-ribulose 1,5-bisphosphate, the primary event in carbon dioxide fixation, as well as the oxidative fragmentation of the pentose substrate. Both reactions occur simultaneously and in competition at the same active site.^[2]

Publication Abstract from PubMed

How AAA+ chaperones conformationally remodel specific target proteins in an ATP-dependent manner is not well understood. Here, we investigated the mechanism of the AAA+ protein Rubisco activase (Rca) in metabolic repair of the photosynthetic enzyme Rubisco, a complex of eight large (RbcL) and eight small (RbcS) subunits containing eight catalytic sites. Rubisco is prone to inhibition by tight-binding sugar phosphates, whose removal is catalyzed by Rca. We engineered a stable Rca hexamer ring and analyzed its functional interaction with Rubisco. Hydrogen/deuterium exchange and chemical crosslinking showed that Rca structurally destabilizes elements of the Rubisco active site with remarkable selectivity. Cryo-electron microscopy revealed that Rca docks onto Rubisco over one active site at a time, positioning the C-terminal strand of RbcL, which stabilizes the catalytic center, for access to the Rca hexamer pore. The pulling force of Rca is fine-tuned to avoid global destabilization and allow for precise enzyme repair.

Mechanism of Enzyme Repair by the AAA+ Chaperone Rubisco Activase.,Bhat JY, Milicic G, Thieulin-Pardo G, Bracher A, Maxwell A, Ciniawsky S, Mueller-Cajar O, Engen JR, Hartl FU, Wendler P, Hayer-Hartl M Mol Cell. 2017 Jul 20. pii: S1097-2765(17)30498-7. doi:, 10.1016/j.molcel.2017.07.004. PMID:28803776^[3]

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

References

↑ Horken KM, Tabita FR. Closely related form I ribulose bisphosphate carboxylase/oxygenase molecules that possess different CO2/O2 substrate specificities. Arch Biochem Biophys. 1999 Jan 15;361(2):183-94. PMID:9882445 doi:http://dx.doi.org/S0003-9861(98)90979-1
↑ Horken KM, Tabita FR. Closely related form I ribulose bisphosphate carboxylase/oxygenase molecules that possess different CO2/O2 substrate specificities. Arch Biochem Biophys. 1999 Jan 15;361(2):183-94. PMID:9882445 doi:http://dx.doi.org/S0003-9861(98)90979-1
↑ Bhat JY, Milicic G, Thieulin-Pardo G, Bracher A, Maxwell A, Ciniawsky S, Mueller-Cajar O, Engen JR, Hartl FU, Wendler P, Hayer-Hartl M. Mechanism of Enzyme Repair by the AAA+ Chaperone Rubisco Activase. Mol Cell. 2017 Jul 20. pii: S1097-2765(17)30498-7. doi:, 10.1016/j.molcel.2017.07.004. PMID:28803776 doi:http://dx.doi.org/10.1016/j.molcel.2017.07.004

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5nv3"

@@ Line 3: / Line 3: @@
 <StructureSection load='5nv3' size='340' side='right' caption='[[5nv3]], [[Resolution|resolution]] 3.39&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5nv3]] is a 16 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5NV3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5NV3 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5nv3]] is a 16 chain structure with sequence from [http://en.wikipedia.org/wiki/"rhodococcus_capsulatus"_molisch_1907 "rhodococcus capsulatus" molisch 1907]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5NV3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5NV3 FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CAP:2-CARBOXYARABINITOL-1,5-DIPHOSPHATE'>CAP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
 <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=KCX:LYSINE+NZ-CARBOXYLIC+ACID'>KCX</scene></td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">cbbL, cbbL1, rbcL ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1063 "Rhodococcus capsulatus" Molisch 1907]), cbbS, rbcS ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1063 "Rhodococcus capsulatus" Molisch 1907])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Ribulose-bisphosphate_carboxylase Ribulose-bisphosphate carboxylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.1.1.39 4.1.1.39] </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=5nv3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5nv3 OCA], [http://pdbe.org/5nv3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5nv3 RCSB], [http://www.ebi.ac.uk/pdbsum/5nv3 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5nv3 ProSAT]</span></td></tr>
@@ Line 24: / Line 25: @@
 __TOC__
 </StructureSection>
+[[Category: Rhodococcus capsulatus molisch 1907]]
 [[Category: Ribulose-bisphosphate carboxylase]]
 [[Category: Bracher, A]]

5nv3

From Proteopedia

Revision as of 18:46, 15 November 2017

Structure of Rubisco from Rhodobacter sphaeroides in complex with CABP

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

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