4pah

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{{Seed}}
 
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[[Image:4pah.png|left|200px]]
 
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==HUMAN PHENYLALANINE HYDROXYLASE CATALYTIC DOMAIN DIMER WITH BOUND NOR-ADRENALINE INHIBITOR==
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The line below this paragraph, containing "STRUCTURE_4pah", creates the "Structure Box" on the page.
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<StructureSection load='4pah' size='340' side='right'caption='[[4pah]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[4pah]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4PAH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4PAH FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FE:FE+(III)+ION'>FE</scene>, <scene name='pdbligand=LNR:L-NOREPINEPHRINE'>LNR</scene></td></tr>
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{{STRUCTURE_4pah| PDB=4pah | SCENE= }}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4pah FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4pah OCA], [https://pdbe.org/4pah PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4pah RCSB], [https://www.ebi.ac.uk/pdbsum/4pah PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4pah ProSAT]</span></td></tr>
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</table>
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== Disease ==
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[https://www.uniprot.org/uniprot/PH4H_HUMAN PH4H_HUMAN] Defects in PAH are the cause of phenylketonuria (PKU) [MIM:[https://omim.org/entry/261600 261600]. PKU is an autosomal recessive inborn error of phenylalanine metabolism, due to severe phenylalanine hydroxylase deficiency. It is characterized by blood concentrations of phenylalanine persistently above 1200 mumol (normal concentration 100 mumol) which usually causes mental retardation (unless low phenylalanine diet is introduced early in life). They tend to have light pigmentation, rashes similar to eczema, epilepsy, extreme hyperactivity, psychotic states and an unpleasant 'mousy' odor.<ref>PMID:8594560</ref> <ref>PMID:2840952</ref> <ref>PMID:2564729</ref> <ref>PMID:2615649</ref> <ref>PMID:1975559</ref> <ref>PMID:1671810</ref> <ref>PMID:2014802</ref> <ref>PMID:1672294</ref> <ref>PMID:1672290</ref> <ref>PMID:1679030</ref> <ref>PMID:1709636</ref> <ref>PMID:1355066</ref> <ref>PMID:1363837</ref> <ref>PMID:1363838</ref> <ref>PMID:8406445</ref> <ref>PMID:8068076</ref> <ref>PMID:7833954</ref> <ref>PMID:8889583</ref> <ref>PMID:8889590</ref> <ref>PMID:9048935</ref> <ref>PMID:9101291</ref> <ref>PMID:9521426</ref> <ref>PMID:9600453</ref> <ref>PMID:10200057</ref> <ref>PMID:9452061</ref> <ref>PMID:9452062</ref> <ref>PMID:9792407</ref> <ref>PMID:9792411</ref> <ref>PMID:9950317</ref> <ref>PMID:10679941</ref> <ref>PMID:11326337</ref> <ref>PMID:11180595</ref> <ref>PMID:11385716</ref> <ref>PMID:11461196</ref> <ref>PMID:12501224</ref> <ref>PMID:18538294</ref> <ref>PMID:22526846</ref> <ref>PMID:22513348</ref> Defects in PAH are the cause of non-phenylketonuria hyperphenylalaninemia (Non-PKU HPA) [MIM:[https://omim.org/entry/261600 261600]. Non-PKU HPA is a mild form of phenylalanine hydroxylase deficiency characterized by phenylalanine levels persistently below 600 mumol, which allows normal intellectual and behavioral development without treatment. Non-PKU HPA is usually caused by the combined effect of a mild hyperphenylalaninemia mutation and a severe one. Defects in PAH are the cause of hyperphenylalaninemia (HPA) [MIM:[https://omim.org/entry/261600 261600]. HPA is the mildest form of phenylalanine hydroxylase deficiency.<ref>PMID:9521426</ref> <ref>PMID:11385716</ref> <ref>PMID:12501224</ref> <ref>PMID:1358789</ref> <ref>PMID:8098245</ref> <ref>PMID:8088845</ref> <ref>PMID:9852673</ref> <ref>PMID:11935335</ref>
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== Function ==
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[https://www.uniprot.org/uniprot/PH4H_HUMAN PH4H_HUMAN]
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/pa/4pah_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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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=4pah ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The aromatic amino acid hydroxylases represent a superfamily of structurally and functionally closely related enzymes, one of those functions being reversible inhibition by catechol derivatives. Here we present the crystal structure of the dimeric catalytic domain (residues 117-424) of human phenylalanine hydroxylase (hPheOH), cocrystallized with various potent and well-known catechol inhibitors and refined at a resolution of 2.0 A. The catechols bind by bidentate coordination to each iron in both subunits of the dimer through the catechol hydroxyl groups, forming a blue-green colored ligand-to-metal charge-transfer complex. In addition, Glu330 and Tyr325 are identified as determinant residues in the recognition of the inhibitors. In particular, the interaction with Glu330 conforms to the structural explanation for the pH dependence of catecholamine binding to PheOH, with a pKa value of 5.1 (20 degreesC). The overall structure of the catechol-bound enzyme is very similar to that of the uncomplexed enzyme (rms difference of 0.2 A for the Calpha atoms). Most striking is the replacement of two iron-bound water molecules with catechol hydroxyl groups. This change is consistent with a change in the ligand field symmetry of the high-spin (S = 5/2) Fe(III) from a rhombic to a nearly axial ligand field symmetry as seen upon noradrenaline binding using EPR spectroscopy [Martinez, A., Andersson, K. K., Haavik, J., and Flatmark, T. (1991) Eur. J. Biochem. 198, 675-682]. Crystallographic comparison with the structurally related rat tyrosine hydroxylase binary complex with the oxidized cofactor 7,8-dihydrobiopterin revealed overlapping binding sites for the catechols and the cofactor, compatible with a competitive type of inhibition of the catechols versus BH4. The comparison demonstrates some structural differences at the active site as the potential basis for the different substrate specificity of the two enzymes.
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===HUMAN PHENYLALANINE HYDROXYLASE CATALYTIC DOMAIN DIMER WITH BOUND NOR-ADRENALINE INHIBITOR===
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Crystallographic analysis of the human phenylalanine hydroxylase catalytic domain with bound catechol inhibitors at 2.0 A resolution.,Erlandsen H, Flatmark T, Stevens RC, Hough E Biochemistry. 1998 Nov 10;37(45):15638-46. PMID:9843368<ref>PMID:9843368</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 4pah" style="background-color:#fffaf0;"></div>
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==See Also==
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The line below this paragraph, {{ABSTRACT_PUBMED_9843368}}, adds the Publication Abstract to the page
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*[[Hydroxylases 3D structures|Hydroxylases 3D structures]]
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(as it appears on PubMed at http://www.pubmed.gov), where 9843368 is the PubMed ID number.
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== References ==
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<references/>
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{{ABSTRACT_PUBMED_9843368}}
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__TOC__
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</StructureSection>
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==About this Structure==
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4PAH is a 1 chain structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4PAH OCA].
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==Reference==
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<ref group="xtra">PMID:9843368</ref><references group="xtra"/>
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Phenylalanine 4-monooxygenase]]
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[[Category: Large Structures]]
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[[Category: Erlandsen, H.]]
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[[Category: Erlandsen H]]
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[[Category: Flatmark, T.]]
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[[Category: Flatmark T]]
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[[Category: Stevens, R C.]]
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[[Category: Stevens RC]]
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[[Category: Non-heme iron-containing monooxygenase]]
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[[Category: Oxidoreductase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Feb 18 06:57:49 2009''
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Current revision

HUMAN PHENYLALANINE HYDROXYLASE CATALYTIC DOMAIN DIMER WITH BOUND NOR-ADRENALINE INHIBITOR

PDB ID 4pah

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