|
|
| Line 4: |
Line 4: |
| | == Structural highlights == | | == Structural highlights == |
| | <table><tr><td colspan='2'>[[1uwa]] is a 16 chain structure with sequence from [https://en.wikipedia.org/wiki/Chlamydomonas_reinhardtii Chlamydomonas reinhardtii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UWA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1UWA FirstGlance]. <br> | | <table><tr><td colspan='2'>[[1uwa]] is a 16 chain structure with sequence from [https://en.wikipedia.org/wiki/Chlamydomonas_reinhardtii Chlamydomonas reinhardtii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UWA OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1UWA FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CAP:2-CARBOXYARABINITOL-1,5-DIPHOSPHATE'>CAP</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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]] 2.3Å</td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=HYP:4-HYDROXYPROLINE'>HYP</scene>, <scene name='pdbligand=KCX:LYSINE+NZ-CARBOXYLIC+ACID'>KCX</scene>, <scene name='pdbligand=SMC:S-METHYLCYSTEINE'>SMC</scene></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CAP:2-CARBOXYARABINITOL-1,5-DIPHOSPHATE'>CAP</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=HYP:4-HYDROXYPROLINE'>HYP</scene>, <scene name='pdbligand=KCX:LYSINE+NZ-CARBOXYLIC+ACID'>KCX</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SMC:S-METHYLCYSTEINE'>SMC</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1gk8|1gk8]], [[1ir2|1ir2]], [[1uw9|1uw9]]</div></td></tr>
| + | |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Ribulose-bisphosphate_carboxylase Ribulose-bisphosphate carboxylase], with EC number [https://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'>[https://proteopedia.org/fgij/fg.htm?mol=1uwa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1uwa OCA], [https://pdbe.org/1uwa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1uwa RCSB], [https://www.ebi.ac.uk/pdbsum/1uwa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1uwa 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=1uwa FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1uwa OCA], [https://pdbe.org/1uwa PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1uwa RCSB], [https://www.ebi.ac.uk/pdbsum/1uwa PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1uwa ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[https://www.uniprot.org/uniprot/RBL_CHLRE RBL_CHLRE]] 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] [[https://www.uniprot.org/uniprot/RBS1_CHLRE RBS1_CHLRE]] 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.
| + | [https://www.uniprot.org/uniprot/RBL_CHLRE RBL_CHLRE] 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] |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
| Line 40: |
Line 38: |
| | [[Category: Chlamydomonas reinhardtii]] | | [[Category: Chlamydomonas reinhardtii]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Ribulose-bisphosphate carboxylase]]
| + | [[Category: Andersson I]] |
| - | [[Category: Andersson, I]] | + | [[Category: Karkehabadi S]] |
| - | [[Category: Karkehabadi, S]] | + | [[Category: Spreitzer RJ]] |
| - | [[Category: Spreitzer, R J]] | + | [[Category: Taylor TC]] |
| - | [[Category: Taylor, T C]] | + | |
| - | [[Category: Carbon dioxide fixation]]
| + | |
| - | [[Category: Lyase]]
| + | |
| - | [[Category: Monooxygenase]]
| + | |
| - | [[Category: Oxidoreductase]]
| + | |
| - | [[Category: Photorespiration]]
| + | |
| - | [[Category: Photosynthesis]]
| + | |
| - | [[Category: Rubisco]]
| + | |
| Structural highlights
1uwa is a 16 chain structure with sequence from Chlamydomonas reinhardtii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Method: | X-ray diffraction, Resolution 2.3Å |
| Ligands: | , , , , , |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
RBL_CHLRE 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]
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
Substitution of Leu290 by Phe (L290F) in the large subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase from the unicellular green alga Chlamydomonas reinhardtii causes a 13% decrease in CO(2)/O(2) specificity and reduced thermal stability. Genetic selection for restored photosynthesis at the restrictive temperature identified an Ala222 to Thr (A222T) substitution that suppresses the deleterious effects of the original mutant substitution to produce a revertant enzyme with improved thermal stability and kinetic properties virtually indistinguishable from that of the wild-type enzyme. Because the mutated residues are situated approximately 19 A away from the active site, they must affect the relative rates of carboxylation and oxygenation in an indirect way. As a means for elucidating the role of such distant interactions in Rubisco catalysis and stability, we have determined the crystal structures of the L290F mutant and L290F/A222T revertant enzymes to 2.30 and 2.05 A resolution, respectively. Inspection of the structures reveals that the mutant residues interact via van der Waals contacts within the same large subunit (intrasubunit path, 15.2 A Calpha-Calpha) and also via a path involving a neighboring small subunit (intersubunit path, 18.7 A Calpha-Calpha). Structural analysis of the mutant enzymes identified regions (residues 50-72 of the small subunit and residues 161-164 and 259-264 of the large subunit) that show significant and systematically increased atomic temperature factors in the L290F mutant enzyme compared to wild type. These regions coincide with residues on the interaction paths between the L290F mutant and A222T suppressor sites and could explain the temperature-conditional phenotype of the L290F mutant strain. This suggests that alterations in subunit interactions will influence protein dynamics and, thereby, affect catalysis.
Altered intersubunit interactions in crystal structures of catalytically compromised ribulose-1,5-bisphosphate carboxylase/oxygenase.,Karkehabadi S, Taylor TC, Spreitzer RJ, Andersson I Biochemistry. 2005 Jan 11;44(1):113-20. PMID:15628851[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Karkehabadi S, Taylor TC, Spreitzer RJ, Andersson I. Altered intersubunit interactions in crystal structures of catalytically compromised ribulose-1,5-bisphosphate carboxylase/oxygenase. Biochemistry. 2005 Jan 11;44(1):113-20. PMID:15628851 doi:http://dx.doi.org/10.1021/bi047928e
|
