1PHZ

STRUCTURE OF PHOSPHORYLATED PHENYLALANINE HYDROXYLASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis of autoregulation of phenylalanine hydroxylase.

Kobe, B.Jennings, I.G.House, C.M.Michell, B.J.Goodwill, K.E.Santarsiero, B.D.Stevens, R.C.Cotton, R.G.Kemp, B.E.

(1999) Nat.Struct.Mol.Biol. 6: 442-448

  • DOI: 10.1038/8247
  • Primary Citation of Related Structures:  2PHM

  • PubMed Abstract: 
  • Phenylalanine hydroxylase converts phenylalanine to tyrosine, a rate-limiting step in phenylalanine catabolism and protein and neurotransmitter biosynthesis. It is tightly regulated by the substrates phenylalanine and tetrahydrobiopterin and by phosp ...

    Phenylalanine hydroxylase converts phenylalanine to tyrosine, a rate-limiting step in phenylalanine catabolism and protein and neurotransmitter biosynthesis. It is tightly regulated by the substrates phenylalanine and tetrahydrobiopterin and by phosphorylation. We present the crystal structures of dephosphorylated and phosphorylated forms of a dimeric enzyme with catalytic and regulatory properties of the wild-type protein. The structures reveal a catalytic domain flexibly linked to a regulatory domain. The latter consists of an N-terminal autoregulatory sequence (containing Ser 16, which is the site of phosphorylation) that extends over the active site pocket, and an alpha-beta sandwich core that is, unexpectedly, structurally related to both pterin dehydratase and the regulatory domains of metabolic enzymes. Phosphorylation has no major structural effects in the absence of phenylalanine, suggesting that phenylalanine and phosphorylation act in concert to activate the enzyme through a combination of intrasteric and possibly allosteric mechanisms.


    Related Citations: 
    • Regulation and Crystallization of Phosphorylated and Dephosphorylated Forms of Truncated Dimeric Phenylalanine Hydroxylase
      Kobe, B.,Jennings, I.G.,House, C.M.,Feil, S.C.,Michell, B.J.,Tiganis, T.,Parker, M.W.,Cotton, R.G.H.,Kemp, B.E.
      (1997) Protein Sci. 6: 1352


    Organizational Affiliation

    St. Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia. B.Kobe@medicine.unimelb.edu.au




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PHENYLALANINE HYDROXYLASE)
A
429Rattus norvegicusGene Names: Pah
EC: 1.14.16.1
Find proteins for P04176 (Rattus norvegicus)
Go to UniProtKB:  P04176
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FE
Query on FE

Download SDF File 
Download CCD File 
A
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.223 
  • Space Group: P 43 2 2
Unit Cell:
Length (Å)Angle (°)
a = 56.783α = 90.00
b = 56.783β = 90.00
c = 302.851γ = 90.00
Software Package:
Software NamePurpose
SHARPphasing
AMoREphasing
DENZOdata reduction
SCALEPACKdata scaling
SOLOMONphasing
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-04-30
    Type: Initial release
  • Version 1.1: 2007-10-16
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance