1e8g: Difference between revisions
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|PDB= 1e8g |SIZE=350|CAPTION= <scene name='initialview01'>1e8g</scene>, resolution 2.10Å | |PDB= 1e8g |SIZE=350|CAPTION= <scene name='initialview01'>1e8g</scene>, resolution 2.10Å | ||
|SITE= <scene name='pdbsite=AC1:Fad+Binding+Site+For+Chain+A'>AC1</scene>, <scene name='pdbsite=AC2:Fcr+Binding+Site+For+Chain+A'>AC2</scene>, <scene name='pdbsite=AC3:Fad+Binding+Site+For+Chain+B'>AC3</scene> and <scene name='pdbsite=AC4:Fcr+Binding+Site+For+Chain+B'>AC4</scene> | |SITE= <scene name='pdbsite=AC1:Fad+Binding+Site+For+Chain+A'>AC1</scene>, <scene name='pdbsite=AC2:Fcr+Binding+Site+For+Chain+A'>AC2</scene>, <scene name='pdbsite=AC3:Fad+Binding+Site+For+Chain+B'>AC3</scene> and <scene name='pdbsite=AC4:Fcr+Binding+Site+For+Chain+B'>AC4</scene> | ||
|LIGAND= <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene> | |LIGAND= <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene>, <scene name='pdbligand=FCR:ALPHA,ALPHA,ALPHA-TRIFLUORO-P-CRESOL'>FCR</scene> | ||
|ACTIVITY= [http://en.wikipedia.org/wiki/Vanillyl-alcohol_oxidase Vanillyl-alcohol oxidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.3.38 1.1.3.38] | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Vanillyl-alcohol_oxidase Vanillyl-alcohol oxidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.1.3.38 1.1.3.38] </span> | ||
|GENE= | |GENE= | ||
|DOMAIN= | |||
|RELATEDENTRY= | |||
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1e8g FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1e8g OCA], [http://www.ebi.ac.uk/pdbsum/1e8g PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1e8g RCSB]</span> | |||
}} | }} | ||
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[[Category: Fraaije, M W.]] | [[Category: Fraaije, M W.]] | ||
[[Category: Mattevi, A.]] | [[Category: Mattevi, A.]] | ||
[[Category: flavoenzyme]] | [[Category: flavoenzyme]] | ||
[[Category: specificity]] | [[Category: specificity]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 19:57:22 2008'' | ||
Revision as of 19:57, 30 March 2008
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| , resolution 2.10Å | |||||||
|---|---|---|---|---|---|---|---|
| Sites: | , , and | ||||||
| Ligands: | , | ||||||
| Activity: | Vanillyl-alcohol oxidase, with EC number 1.1.3.38 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
STRUCTURE OF THE H61T DOUBLE MUTANT OF VANILLYL-ALCOHOL OXIDASE IN COMPLEX WITH FLUORO-CRESOL
OverviewOverview
Vanillyl-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.
About this StructureAbout this Structure
1E8G is a Single protein structure of sequence from Penicillium simplicissimum. Full crystallographic information is available from OCA.
ReferenceReference
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
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