5fii
From Proteopedia
(Difference between revisions)
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=PHE:PHENYLALANINE'>PHE</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=PHE:PHENYLALANINE'>PHE</scene></td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Phenylalanine_4-monooxygenase Phenylalanine 4-monooxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.16.1 1.14.16.1] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Phenylalanine_4-monooxygenase Phenylalanine 4-monooxygenase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.14.16.1 1.14.16.1] </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=5fii FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5fii OCA], [http://pdbe.org/5fii PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5fii RCSB], [http://www.ebi.ac.uk/pdbsum/5fii 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=5fii FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5fii OCA], [http://pdbe.org/5fii PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5fii RCSB], [http://www.ebi.ac.uk/pdbsum/5fii PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5fii ProSAT]</span></td></tr> |
</table> | </table> | ||
== Disease == | == Disease == | ||
[[http://www.uniprot.org/uniprot/PH4H_HUMAN PH4H_HUMAN]] Defects in PAH are the cause of phenylketonuria (PKU) [MIM:[http://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:[http://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:[http://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> | [[http://www.uniprot.org/uniprot/PH4H_HUMAN PH4H_HUMAN]] Defects in PAH are the cause of phenylketonuria (PKU) [MIM:[http://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:[http://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:[http://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> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | The multi-domain enzyme phenylalanine hydroxylase (PAH) catalyzes the hydroxylation of dietary I-phenylalanine (Phe) to I-tyrosine. Inherited mutations that result in PAH enzyme deficiency are the genetic cause of the autosomal recessive disorder phenylketonuria. Phe is the substrate for the PAH active site, but also an allosteric ligand that increases enzyme activity. Phe has been proposed to bind, in addition to the catalytic domain, a site at the PAH N-terminal regulatory domain (PAH-RD), to activate the enzyme via an unclear mechanism. Here we report the crystal structure of human PAH-RD bound with Phe at 1.8 A resolution, revealing a homodimer of ACT folds with Phe bound at the dimer interface. This work delivers the structural evidence to support previous solution studies that a binding site exists in the RD for Phe, and that Phe binding results in dimerization of PAH-RD. Consistent with our structural observation, a disease-associated PAH mutant impaired in Phe binding disrupts the monomer:dimer equilibrium of PAH-RD. Our data therefore support an emerging model of PAH allosteric regulation, whereby Phe binds to PAH-RD and mediates the dimerization of regulatory modules that would bring about conformational changes to activate the enzyme. | ||
| + | |||
| + | Structural basis for ligand-dependent dimerization of phenylalanine hydroxylase regulatory domain.,Patel D, Kopec J, Fitzpatrick F, McCorvie TJ, Yue WW Sci Rep. 2016 Apr 6;6:23748. doi: 10.1038/srep23748. PMID:27049649<ref>PMID:27049649</ref> | ||
| + | |||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 5fii" style="background-color:#fffaf0;"></div> | ||
== References == | == References == | ||
<references/> | <references/> | ||
Revision as of 14:18, 5 October 2016
Structure of a human aspartate kinase, chorismate mutase and TyrA domain.
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