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1rcx

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Revision as of 11:20, 4 December 2019

NON-ACTIVATED SPINACH RUBISCO IN COMPLEX WITH ITS SUBSTRATE RIBULOSE-1,5-BISPHOSPHATE

Structural highlights

1rcx is a 16 chain structure with sequence from Spinacia oleracea. The November 2000 RCSB PDB Molecule of the Month feature on Rubisco by David S. Goodsell is 10.2210/rcsb_pdb/mom_2000_11. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Activity:	Ribulose-bisphosphate carboxylase, with EC number 4.1.1.39
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[RBL_SPIOL] 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 in the photorespiration process. Both reactions occur simultaneously and in competition at the same active site.[HAMAP-Rule:MF_01338] [RBS1_SPIOL] 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.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The three-dimensional structure of the complex of ribulose 1,5-bisphosphate carboxylase/oxygenase (rubisco; EC 4.1.1.39) from spinach with its natural substrate ribulose 1,5-bisphosphate (RuBP) has been determined both under activating and non-activating conditions by X-ray crystallography to a resolution of 2.1 A and 2.4 A, respectively. Under activating conditions, the use of calcium instead of magnesium as the activator metal ion enabled us to trap the substrate in a stable complex for crystallographic analysis. Comparison of the structure of the activated and the non-activated RuBP complexes shows a tighter binding for the substrate in the non-activated form of the enzyme, in line with previous solution studies. In the non-activated complex, the substrate triggers isolation of the active site by inducing movements of flexible loop regions of the catalytic subunits. In contrast, in the activated complex the active site remains partly open, probably awaiting the binding of the gaseous substrate. By inspection of the structures and by comparison with other complexes of the enzyme we were able to identify a network of hydrogen bonds that stabilise a closed active site structure during crucial steps in the reaction. The present structure underlines the central role of the carbamylated lysine 201 in both activation and catalysis, and completes available structural information for our proposal on the mechanism of the enzyme.

The structure of the complex between rubisco and its natural substrate ribulose 1,5-bisphosphate.,Taylor TC, Andersson I J Mol Biol. 1997 Jan 31;265(4):432-44. PMID:9034362^[1]

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

References

↑ Taylor TC, Andersson I. The structure of the complex between rubisco and its natural substrate ribulose 1,5-bisphosphate. J Mol Biol. 1997 Jan 31;265(4):432-44. PMID:9034362 doi:10.1006/jmbi.1996.0738

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1rcx"

@@ Line 1: / Line 1: @@
 ==NON-ACTIVATED SPINACH RUBISCO IN COMPLEX WITH ITS SUBSTRATE RIBULOSE-1,5-BISPHOSPHATE==
-<StructureSection load='1rcx' size='340' side='right' caption='[[1rcx]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
+<StructureSection load='1rcx' size='340' side='right'caption='[[1rcx]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[1rcx]] is a 16 chain structure with sequence from [http://en.wikipedia.org/wiki/Spinacia_oleracea Spinacia oleracea]. The November 2000 RCSB PDB [http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Rubisco''  by David S. Goodsell is [http://dx.doi.org/10.2210/rcsb_pdb/mom_2000_11 10.2210/rcsb_pdb/mom_2000_11]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RCX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1RCX FirstGlance]. <br>
@@ Line 29: / Line 29: @@
 </div>
 <div class="pdbe-citations 1rcx" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[RuBisCO|RuBisCO]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: RCSB PDB Molecule of the Month]]
 [[Category: Ribulose-bisphosphate carboxylase]]

1rcx

From Proteopedia

Revision as of 11:20, 4 December 2019

NON-ACTIVATED SPINACH RUBISCO IN COMPLEX WITH ITS SUBSTRATE RIBULOSE-1,5-BISPHOSPHATE

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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