2C4B

Inhibitor cystine knot protein McoEeTI fused to the catalytically inactive barnase mutant H102A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.164 
  • R-Value Work: 0.132 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Barnase Fusion as a Tool to Determine the Crystal Structure of the Small Disulfide-Rich Protein Mcoeeti.

Niemann, H.H.Schmoldt, H.U.Wentzel, A.Kolmar, H.Heinz, D.W.

(2006) J.Mol.Biol. 356: 1

  • DOI: 10.1016/j.jmb.2005.11.005

  • PubMed Abstract: 
  • We present a fusion system suited to determine the crystal structure of small disulfide-rich proteins. McoEeTI, a hybrid inhibitor cystine knot microprotein, was produced as a soluble fusion to a catalytically inactive variant of the RNAse barnase in ...

    We present a fusion system suited to determine the crystal structure of small disulfide-rich proteins. McoEeTI, a hybrid inhibitor cystine knot microprotein, was produced as a soluble fusion to a catalytically inactive variant of the RNAse barnase in Escherichia coli. Functioning as a versatile tag, barnase facilitated purification, crystallization and high-resolution structure determination. Flexibility of the linker region allows for different relative orientations of barnase and the fusion partner in two crystallographically independent molecules and may thereby facilitate crystal packing. Nevertheless, the linker region is well ordered in both molecules. This system may prove more generally useful to determine the crystal structure of peptides and small proteins.


    Organizational Affiliation

    Division of Structural Biology, German Research Centre for Biotechnology (GBF) Mascheroder Weg 1, D-38124 Braunschweig, Germany. hartmut.niemann@gbf.de




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BARNASE MCOEETI FUSION
A, B
143Bacillus amyloliquefaciensEcballium elateriumMomordica cochinchinensis
This entity is chimeric
Mutation(s): 1 
EC: 3.1.27.-
Find proteins for P00648 (Bacillus amyloliquefaciens)
Go to UniProtKB:  P00648
Find proteins for P12071 (Ecballium elaterium)
Go to UniProtKB:  P12071
Find proteins for P82409 (Momordica cochinchinensis)
Go to UniProtKB:  P82409
Small Molecules
Ligands 7 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
FMT
Query on FMT

Download SDF File 
Download CCD File 
A, B
FORMIC ACID
C H2 O2
BDAGIHXWWSANSR-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

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

Download SDF File 
Download CCD File 
A
UNKNOWN ATOM OR ION
X
*
 Ligand Interaction
2PE
Query on 2PE

Download SDF File 
Download CCD File 
A, B
NONAETHYLENE GLYCOL
C18 H38 O10
YZUUTMGDONTGTN-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
A, B
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
MES
Query on MES

Download SDF File 
Download CCD File 
B
2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.164 
  • R-Value Work: 0.132 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 74.020α = 90.00
b = 217.710β = 90.00
c = 58.340γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
EPMRphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-11-21
    Type: Initial release
  • Version 1.1: 2019-04-03
    Type: Advisory, Data collection, Derived calculations, Experimental preparation