2GZ5

Human Type 1 methionine aminopeptidase in complex with ovalicin at 1.1 Ang


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.1 Å
  • R-Value Free: 0.145 
  • R-Value Work: 0.117 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the angiogenesis inhibitor ovalicin bound to its noncognate target, human Type 1 methionine aminopeptidase.

Addlagatta, A.Matthews, B.W.

(2006) Protein Sci. 15: 1842-1848

  • DOI: 10.1110/ps.062278006

  • PubMed Abstract: 
  • Methionine aminopeptidases (MetAPs) remove the initiator methionine during protein biosynthesis. They exist in two isoforms, MetAP1 and MetAP2. The anti-angiogenic compound fumagillin binds tightly to the Type 2 MetAPs but only weakly to Type 1. High ...

    Methionine aminopeptidases (MetAPs) remove the initiator methionine during protein biosynthesis. They exist in two isoforms, MetAP1 and MetAP2. The anti-angiogenic compound fumagillin binds tightly to the Type 2 MetAPs but only weakly to Type 1. High-affinity complexes of fumagillin and its relative ovalicin with Type 2 human MetAP have been reported. Here we describe the crystallographic structure of the low-affinity complex between ovalicin and Type 1 human MetAP at 1.1 A resolution. This provides the first opportunity to compare the structures of ovalicin or fumagillin bound to a Type 1 and a Type 2 MetAP. For both Type 1 and Type 2 human MetAPs the inhibitor makes a covalent adduct with a corresponding histidine. At the same time there are significant differences in the alignment of the inhibitors within the respective active sites. It has been argued that the lower affinity of ovalicin and fumagillin for the Type 1 MetAPs is due to the smaller size of their active sites relative to the Type 2 enzymes. Comparison with the uncomplexed structure of human Type 1 MetAP indicates that there is some truth to this. Several active site residues have to move "outward" by 0.5 Angstroms or so to accommodate the inhibitor. Other residues move "inward." There are, however, other factors that come into play. In particular, the side chain of His310 rotates by 134 degrees into a different position where (together with Glu128 and Tyr195) it coordinates a metal ion not seen at this site in the native enzyme.


    Organizational Affiliation

    Institute of Molecular Biology, Howard Hughes Medical Institute and Department of Physics, University of Oregon, Eugene, 97403-1229, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Methionine aminopeptidase 1
A
329Homo sapiensMutation(s): 0 
Gene Names: METAP1 (KIAA0094)
EC: 3.4.11.18
Find proteins for P53582 (Homo sapiens)
Go to Gene View: METAP1
Go to UniProtKB:  P53582
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K
Query on K

Download SDF File 
Download CCD File 
A
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
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
OVA
Query on OVA

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Download CCD File 
A
3,4-DIHYDROXY-2-METHOXY-4-METHYL-3-[2-METHYL-3-(3-METHYL-BUT-2-ENYL) -OXIRANYL]-CYCLOHEXANONE
OVALICIN
C16 H26 O5
UOXVFQCRPDLSFN-DGXTUMSLSA-N
 Ligand Interaction
CO
Query on CO

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Download CCD File 
A
COBALT (II) ION
Co
XLJKHNWPARRRJB-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.1 Å
  • R-Value Free: 0.145 
  • R-Value Work: 0.117 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 47.568α = 90.00
b = 77.689β = 90.63
c = 48.644γ = 90.00
Software Package:
Software NamePurpose
SHELXL-97refinement
HKL-2000data scaling
ADSCdata collection
GLRFphasing
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-05-23
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Non-polymer description, Version format compliance