3PHM

REDUCED (CU+) PEPTIDYLGLYCINE ALPHA-HYDROXYLATING MONOOXYGENASE (PHM)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Substrate-mediated electron transfer in peptidylglycine alpha-hydroxylating monooxygenase.

Prigge, S.T.Kolhekar, A.S.Eipper, B.A.Mains, R.E.Amzel, L.M.

(1999) Nat.Struct.Mol.Biol. 6: 976-983

  • DOI: 10.1038/13351
  • Primary Citation of Related Structures:  1OPM

  • PubMed Abstract: 
  • Peptide amidation is a ubiquitous posttranslational modification of bioactive peptides. Peptidylglycine alpha-hydroxylating monooxygenase (PHM; EC 1.14.17.3), the enzyme that catalyzes the first step of this reaction, is composed of two domains, each ...

    Peptide amidation is a ubiquitous posttranslational modification of bioactive peptides. Peptidylglycine alpha-hydroxylating monooxygenase (PHM; EC 1.14.17.3), the enzyme that catalyzes the first step of this reaction, is composed of two domains, each of which binds one copper atom. The coppers are held 11 A apart on either side of a solvent-filled interdomain cleft, and the PHM reaction requires electron transfer between these sites. A plausible mechanism for electron transfer might involve interdomain motion to decrease the distance between the copper atoms. Our experiments show that PHM catalytic core (PHMcc) is enzymatically active in the crystal phase, where interdomain motion is not possible. Instead, structures of two states relevant to catalysis indicate that water, substrate and active site residues may provide an electron transfer pathway that exists only during the PHM catalytic cycle.


    Organizational Affiliation

    Department of Biophysics and Biophysical Chemistry, Johns Hopkins School of Medicine, Baltimore, Maryland 21205, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (PEPTIDYLGLYCINE ALPHA-HYDROXYLATING MONOOXYGENASE)
A
310Rattus norvegicusGene Names: Pam
EC: 4.3.2.5, 1.14.17.3
Find proteins for P14925 (Rattus norvegicus)
Go to UniProtKB:  P14925
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

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Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
AZI
Query on AZI

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Download CCD File 
A
AZIDE ION
N3
IVRMZWNICZWHMI-UHFFFAOYSA-N
 Ligand Interaction
CU
Query on CU

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Download CCD File 
A
COPPER (II) ION
Cu
JPVYNHNXODAKFH-UHFFFAOYSA-N
 Ligand Interaction
NI
Query on NI

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Download CCD File 
A
NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.200 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 69.519α = 90.00
b = 68.770β = 90.00
c = 82.417γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-09-29
    Type: Initial release
  • Version 1.1: 2007-10-16
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance