3A2G

Crystal Structure of K102C-Myoglobin conjugated with Fluorescein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Modification of porous protein crystals in development of biohybrid materials

Koshiyama, T.Kawaba, N.Hikage, T.Shirai, M.Miura, Y.Huang, C.-Y.Tanaka, K.Watanabe, Y.Ueno, T.

(2010) Bioconjug Chem 21: 264-269

  • DOI: 10.1021/bc9003052
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Protein assemblies have attracted increasing attention for construction of biohybrid materials. Protein crystals can also be regarded as solid protein assemblies. The present work demonstrates that protein crystals can be employed as porous biomaterials by site-specific modifications of the crystals of recombinant sperm whale myoglobin mutants ...

    Protein assemblies have attracted increasing attention for construction of biohybrid materials. Protein crystals can also be regarded as solid protein assemblies. The present work demonstrates that protein crystals can be employed as porous biomaterials by site-specific modifications of the crystals of recombinant sperm whale myoglobin mutants. The myoglobin crystals of space group P6 provide hexagonal pores consisting of the building blocks of six Mb molecules, which form a pore with a diameter of 40 A. On the basis of the lattice structure of the Mb crystals, we have selected appropriate residues located on the surface of the pores for replacement with cysteine. This enables modification of the pore surface via coupling with maleimide derivatives. We have succeeded in crystallizing the modified Mb mutants, retaining the P6 lattice, and consistently aligning nanosized functional molecules such as fluorescein, eosin, and Ru(bpy)(3) into the hexagonal pores of the Mb crystals. Our strategy for site-specific modification of protein crystal pores is applicable to various protein crystals with porous structures. We believe that modified porous protein crystals will provide attractive candidates for novel solid materials in nanotechnology applications.


    Organizational Affiliation

    Institute for Integrated Cell-Material Sciences, Funai Center, Kyoto University Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MyoglobinA154Physeter catodonMutation(s): 1 
Gene Names: MB
Find proteins for P02185 (Physeter macrocephalus)
Explore P02185 
Go to UniProtKB:  P02185
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HEM
Query on HEM

Download CCD File 
A
PROTOPORPHYRIN IX CONTAINING FE
C34 H32 Fe N4 O4
KABFMIBPWCXCRK-RGGAHWMASA-L
 Ligand Interaction
LCY
Query on LCY

Download CCD File 
A
1-methylpyrrolidine-2,5-dione
C5 H7 N O2
KYEACNNYFNZCST-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.179 
  • Space Group: P 6
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 90.409α = 90
b = 90.409β = 90
c = 45.32γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data collection
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-03-02
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance