1bsl: Difference between revisions

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<StructureSection load='1bsl' size='340' side='right'caption='[[1bsl]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
<StructureSection load='1bsl' size='340' side='right'caption='[[1bsl]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1bsl]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BSL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1BSL FirstGlance]. <br>
<table><tr><td colspan='2'>[[1bsl]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Vibrio_harveyi Vibrio harveyi]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BSL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1BSL FirstGlance]. <br>
</td></tr><tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Alkanal_monooxygenase_(FMN-linked) Alkanal monooxygenase (FMN-linked)], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.14.3 1.14.14.3] </span></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'>[https://proteopedia.org/fgij/fg.htm?mol=1bsl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1bsl OCA], [https://pdbe.org/1bsl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1bsl RCSB], [https://www.ebi.ac.uk/pdbsum/1bsl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1bsl 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=1bsl FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1bsl OCA], [https://pdbe.org/1bsl PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1bsl RCSB], [https://www.ebi.ac.uk/pdbsum/1bsl PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1bsl ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[https://www.uniprot.org/uniprot/LUXB_VIBHA LUXB_VIBHA]] Light-emitting reaction in luminous bacteria. The specific role of the beta subunit is unknown, but it is absolutely required for bioluminescence activity.  
[https://www.uniprot.org/uniprot/LUXB_VIBHA LUXB_VIBHA] Light-emitting reaction in luminous bacteria. The specific role of the beta subunit is unknown, but it is absolutely required for bioluminescence activity.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1bsl ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1bsl ConSurf].
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== Publication Abstract from PubMed ==
Luciferase, as isolated from Vibrio harveyi, is an alpha beta heterodimer. When allowed to fold in the absence of the alpha subunit, either in vitro or in vivo, the beta subunit of enzyme will form a kinetically stable homodimer that does not unfold even after prolonged incubation in 5 M urea at pH 7.0 and 18 degrees C. This form of the beta subunit, arising via kinetic partitioning on the folding pathway, appears to constitute a kinetically trapped alternative to the heterodimeric enzyme (Sinclair JF, Ziegler MM, Baldwin TO. 1994. Kinetic partitioning during protein folding yields multiple native states. Nature Struct Biol 1: 320-326). Here we describe the X-ray crystal structure of the beta 2 homodimer of luciferase from V. harveyi determined and refined at 1.95 A resolution. Crystals employed in the investigational belonged to the orthorhombic space group P2(1)2(1)2(1) with unit cell dimensions of a = 58.8 A, b = 62.0 A, and c = 218.2 A and contained one dimer per asymmetric unit. Like that observed in the functional luciferase alpha beta heterodimer, the major tertiary structural motif of each beta subunit consists of an (alpha/beta)8 barrel (Fisher AJ, Raushel FM, Baldwin TO, Rayment I. 1995. Three-dimensional structure of bacterial luciferase from Vibrio harveyi at 2.4 A resolution. Biochemistry 34: 6581-6586). The root-mean-square deviation of the alpha-carbon coordinates between the beta subunits of the hetero- and homodimers is 0.7 A. This high resolution X-ray analysis demonstrated that "domain" or "loop" swapping has not occurred upon formation of the beta 2 homodimer and thus the stability of the beta 2 species to denaturation cannot be explained in such simple terms. In fact, the subunit:subunit interfaces observed in both the beta 2 homodimer and alpha beta heterodimer are remarkably similar in hydrogen-bonding patterns and buried surface areas.
Structure of the beta 2 homodimer of bacterial luciferase from Vibrio harveyi: X-ray analysis of a kinetic protein folding trap.,Thoden JB, Holden HM, Fisher AJ, Sinclair JF, Wesenberg G, Baldwin TO, Rayment I Protein Sci. 1997 Jan;6(1):13-23. PMID:9007973<ref>PMID:9007973</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1bsl" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Luciferase 3D structures|Luciferase 3D structures]]
*[[Luciferase 3D structures|Luciferase 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Baldwin, T O]]
[[Category: Vibrio harveyi]]
[[Category: Holden, H M]]
[[Category: Baldwin TO]]
[[Category: Rayment, I]]
[[Category: Holden HM]]
[[Category: Thoden, J B]]
[[Category: Rayment I]]
[[Category: Flavoprotein]]
[[Category: Thoden JB]]
[[Category: Fmn]]
[[Category: Luminescence]]
[[Category: Monooxygenase]]
[[Category: Oxidoreductase]]
[[Category: Photoprotein]]

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