1e8f: Difference between revisions
No edit summary |
No edit summary |
||
| Line 3: | Line 3: | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1e8f]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Penicillium_simplicissimum Penicillium simplicissimum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1E8F OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1E8F FirstGlance]. <br> | <table><tr><td colspan='2'>[[1e8f]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Penicillium_simplicissimum Penicillium simplicissimum]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1E8F OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1E8F FirstGlance]. <br> | ||
</td></tr><tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1e8g|1e8g]], [[1e8h|1e8h]], [[1ahu|1ahu]], [[1ahv|1ahv]], [[1ahz|1ahz]], [[1dzn|1dzn]], [[1e0y|1e0y]], [[1qlt|1qlt]], [[1qlu|1qlu]], [[1vao|1vao]], [[2vao|2vao]]</td></tr> | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1e8g|1e8g]], [[1e8h|1e8h]], [[1ahu|1ahu]], [[1ahv|1ahv]], [[1ahz|1ahz]], [[1dzn|1dzn]], [[1e0y|1e0y]], [[1qlt|1qlt]], [[1qlu|1qlu]], [[1vao|1vao]], [[2vao|2vao]]</td></tr> | ||
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Aryl-alcohol_oxidase Aryl-alcohol oxidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.3.7 1.1.3.7] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Aryl-alcohol_oxidase Aryl-alcohol oxidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.3.7 1.1.3.7] </span></td></tr> | ||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1e8f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1e8f OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1e8f RCSB], [http://www.ebi.ac.uk/pdbsum/1e8f PDBsum]</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=1e8f FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1e8f OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1e8f RCSB], [http://www.ebi.ac.uk/pdbsum/1e8f PDBsum]</span></td></tr> | ||
<table> | </table> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
| Line 34: | Line 34: | ||
[[Category: Aryl-alcohol oxidase]] | [[Category: Aryl-alcohol oxidase]] | ||
[[Category: Penicillium simplicissimum]] | [[Category: Penicillium simplicissimum]] | ||
[[Category: Fraaije, M W | [[Category: Fraaije, M W]] | ||
[[Category: Mattevi, A | [[Category: Mattevi, A]] | ||
[[Category: Catalysis]] | [[Category: Catalysis]] | ||
[[Category: Flavoenzyme]] | [[Category: Flavoenzyme]] | ||
Revision as of 23:16, 22 December 2014
STRUCTURE OF THE H61T MUTANT OF THE FLAVOENZYME VANILLYL-ALCOHOL OXIDASE IN THE APO FORMSTRUCTURE OF THE H61T MUTANT OF THE FLAVOENZYME VANILLYL-ALCOHOL OXIDASE IN THE APO FORM
Structural highlights
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 PubMedVanillyl-alcohol oxidase (VAO) is member of a newly recognized flavoprotein family of structurally related oxidoreductases. The enzyme contains a covalently linked FAD cofactor. To study the mechanism of flavinylation we have created a design point mutation (His-61 --> Thr). In the mutant enzyme the covalent His-C8alpha-flavin linkage is not formed, while the enzyme is still able to bind FAD and perform catalysis. The H61T mutant displays a similar affinity for FAD and ADP (K(d) = 1.8 and 2.1 microm, respectively) but does not interact with FMN. H61T is about 10-fold less active with 4-(methoxymethyl)phenol) (k(cat) = 0.24 s(-)(1), K(m) = 40 microm) than the wild-type enzyme. The crystal structures of both the holo and apo form of H61T are highly similar to the structure of wild-type VAO, indicating that binding of FAD to the apoprotein does not require major structural rearrangements. These results show that covalent flavinylation is an autocatalytical process in which His-61 plays a crucial role by activating His-422. Furthermore, our studies clearly demonstrate that in VAO, the FAD binds via a typical lock-and-key approach to a preorganized binding site. Structural analysis of flavinylation in vanillyl-alcohol oxidase.,Fraaije MW, van Den Heuvel RH, van Berkel WJ, Mattevi A J Biol Chem. 2000 Dec 8;275(49):38654-8. PMID:10984479[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
|
| ||||||||||||||||||