2j5c: Difference between revisions

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==Rational conversion of substrate and product specificity in a monoterpene synthase. Structural insights into the molecular basis of rapid evolution.==
==Rational conversion of substrate and product specificity in a monoterpene synthase. Structural insights into the molecular basis of rapid evolution.==
<StructureSection load='2j5c' size='340' side='right' caption='[[2j5c]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
<StructureSection load='2j5c' size='340' side='right'caption='[[2j5c]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[2j5c]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Salvia_fruticosa Salvia fruticosa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2J5C OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2J5C FirstGlance]. <br>
<table><tr><td colspan='2'>[[2j5c]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Salvia_fruticosa Salvia fruticosa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2J5C OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2J5C FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</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]] 1.95&#8491;</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=2j5c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2j5c OCA], [http://pdbe.org/2j5c PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2j5c RCSB], [http://www.ebi.ac.uk/pdbsum/2j5c PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2j5c ProSAT]</span></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene></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=2j5c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2j5c OCA], [https://pdbe.org/2j5c PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2j5c RCSB], [https://www.ebi.ac.uk/pdbsum/2j5c PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2j5c ProSAT]</span></td></tr>
</table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CINS1_SALFT CINS1_SALFT]
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Salvia fruticosa]]
[[Category: Salvia fruticosa]]
[[Category: Anssour, S]]
[[Category: Anssour S]]
[[Category: Dunwell, J M]]
[[Category: Dunwell JM]]
[[Category: Goodenough, P W]]
[[Category: Goodenough PW]]
[[Category: Ioannidis, D]]
[[Category: Ioannidis D]]
[[Category: Johnson, C B]]
[[Category: Johnson CB]]
[[Category: Kampranis, S C]]
[[Category: Kampranis SC]]
[[Category: Katerelos, N A]]
[[Category: Katerelos NA]]
[[Category: Mahrez, W]]
[[Category: Mahrez W]]
[[Category: Makris, A M]]
[[Category: Makris AM]]
[[Category: Ninga, E]]
[[Category: Ninga E]]
[[Category: Purvis, A]]
[[Category: Purvis A]]
[[Category: 8-cineole]]
[[Category: Lyase]]
[[Category: Monoterpene]]
[[Category: Terpene synthase]]

Latest revision as of 17:34, 13 December 2023

Rational conversion of substrate and product specificity in a monoterpene synthase. Structural insights into the molecular basis of rapid evolution.Rational conversion of substrate and product specificity in a monoterpene synthase. Structural insights into the molecular basis of rapid evolution.

Structural highlights

2j5c is a 2 chain structure with sequence from Salvia fruticosa. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.95Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

CINS1_SALFT

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

Terpene synthases are responsible for the biosynthesis of the complex chemical defense arsenal of plants and microorganisms. How do these enzymes, which all appear to share a common terpene synthase fold, specify the many different products made almost entirely from one of only three substrates? Elucidation of the structure of 1,8-cineole synthase from Salvia fruticosa (Sf-CinS1) combined with analysis of functional and phylogenetic relationships of enzymes within Salvia species identified active-site residues responsible for product specificity. Thus, Sf-CinS1 was successfully converted to a sabinene synthase with a minimum number of rationally predicted substitutions, while identification of the Asn side chain essential for water activation introduced 1,8-cineole and alpha-terpineol activity to Salvia pomifera sabinene synthase. A major contribution to product specificity in Sf-CinS1 appears to come from a local deformation within one of the helices forming the active site. This deformation is observed in all other mono- or sesquiterpene structures available, pointing to a conserved mechanism. Moreover, a single amino acid substitution enlarged the active-site cavity enough to accommodate the larger farnesyl pyrophosphate substrate and led to the efficient synthesis of sesquiterpenes, while alternate single substitutions of this critical amino acid yielded five additional terpene synthases.

Rational conversion of substrate and product specificity in a Salvia monoterpene synthase: structural insights into the evolution of terpene synthase function.,Kampranis SC, Ioannidis D, Purvis A, Mahrez W, Ninga E, Katerelos NA, Anssour S, Dunwell JM, Degenhardt J, Makris AM, Goodenough PW, Johnson CB Plant Cell. 2007 Jun;19(6):1994-2005. Epub 2007 Jun 8. PMID:17557809[1]

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

References

  1. Kampranis SC, Ioannidis D, Purvis A, Mahrez W, Ninga E, Katerelos NA, Anssour S, Dunwell JM, Degenhardt J, Makris AM, Goodenough PW, Johnson CB. Rational conversion of substrate and product specificity in a Salvia monoterpene synthase: structural insights into the evolution of terpene synthase function. Plant Cell. 2007 Jun;19(6):1994-2005. Epub 2007 Jun 8. PMID:17557809 doi:10.1105/tpc.106.047779

2j5c, resolution 1.95Å

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