View source for 2yym

[[Image:2yym.gif|left|200px]]

 {{Structure
|PDB= 2yym |SIZE=350|CAPTION= <scene name='initialview01'>2yym</scene>, resolution 1.70&Aring;
|SITE= 
|LIGAND= <scene name='pdbligand=4HP:4-HYDROXYPHENYLACETATE'>4HP</scene>, <scene name='pdbligand=FAD:FLAVIN-ADENINE+DINUCLEOTIDE'>FAD</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>
|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/4-hydroxyphenylacetate_3-monooxygenase 4-hydroxyphenylacetate 3-monooxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.13.3 1.14.13.3] </span>
|GENE= 
|DOMAIN=
|RELATEDENTRY=[[2yyg|2YYG]], [[2yyi|2YYI]], [[2yyj|2YYJ]], [[2yyk|2YYK]], [[2yyl|2YYL]]
|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2yym FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2yym OCA], [http://www.ebi.ac.uk/pdbsum/2yym PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2yym RCSB]</span>
}}

'''Crystal structure of the mutant of HpaB (T198I, A276G, and R466H) complexed with FAD and 4-hydroxyphenylacetate'''


==Overview==
The 4-hydroxyphenylacetate (4HPA) 3-monooxygenase is involved in the initial step of the 4HPA degradation pathway and catalyzes 4HPA hydroxylation to 3,4-dihydroxyphenylacetate. This enzyme consists of two components, an oxygenase (HpaB) and a reductase (HpaC). To understand the structural basis of the catalytic mechanism of HpaB, crystal structures of HpaB from Thermus thermophilus HB8 were determined in three states: a ligand-free form, a binary complex with FAD, and a ternary complex with FAD and 4HPA. Structural analysis revealed that the binding and dissociation of flavin are accompanied by conformational changes of the loop between beta5 and beta6 and of the loop between beta8 and beta9, leading to preformation of part of the substrate-binding site (Ser-197 and Thr-198). The latter loop further changes its conformation upon binding of 4HPA and obstructs the active site from the bulk solvent. Arg-100 is located adjacent to the putative oxygen-binding site and may be involved in the formation and stabilization of the C4a-hydroperoxyflavin intermediate.

==About this Structure==
2YYM is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Thermus_thermophilus Thermus thermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2YYM OCA]. 

==Reference==
Crystal structure of the oxygenase component (HpaB) of the 4-hydroxyphenylacetate 3-monooxygenase from Thermus thermophilus HB8., Kim SH, Hisano T, Takeda K, Iwasaki W, Ebihara A, Miki K, J Biol Chem. 2007 Nov 9;282(45):33107-17. Epub 2007 Sep 5. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17804419 17804419]
[[Category: 4-hydroxyphenylacetate 3-monooxygenase]]
[[Category: Single protein]]
[[Category: Thermus thermophilus]]
[[Category: Ebihara, A.]]
[[Category: Hisano, T.]]
[[Category: Iwasaki, W.]]
[[Category: Kim, S H.]]
[[Category: Miki, K.]]
[[Category: Takeda, K.]]
[[Category: fad and 4-hydroxyphenylacetate complex]]
[[Category: mutant]]
[[Category: oxidoreductase]]
[[Category: oxygnase component]]
[[Category: riken spring-8 center]]
[[Category: structurome]]
[[Category: two-component flavin diffusible monooxygenase]]

''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 05:16:41 2008''