2I99

Crystal structure of human Mu_crystallin at 2.6 Angstrom


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.213 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history

Literature

Crystal structure of human {micro}-crystallin complexed with NADPH

Cheng, Z.Sun, L.He, J.Gong, W.

(2007) Protein Sci. 16: 329-335

  • DOI: 10.1110/ps.062556907

  • PubMed Abstract: 
  • Human cytosolic 3,5,3'-triiodo-L-thyronine-binding protein, also called mu-crystallin or CRYM, plays important physiological roles in transporting 3,5,3'-triiodo-L-thyronine (T(3)) into nuclei and regulating thyroid-hormone-related gene expression. T ...

    Human cytosolic 3,5,3'-triiodo-L-thyronine-binding protein, also called mu-crystallin or CRYM, plays important physiological roles in transporting 3,5,3'-triiodo-L-thyronine (T(3)) into nuclei and regulating thyroid-hormone-related gene expression. The crystal structure of human CRYM's bacterial homolog Pseudomonas putida ornithine cyclodeaminase and Archaeoglobus fulgidus alanine dehydrogenase have been available, but no CRYM structure has been reported. Here, we report the crystal structure of human CRYM bound with NADPH refined to 2.6 A, and there is one dimer in the asymmetric unit. The structure contains two domains: a Rossmann fold-like NADPH-binding domain and a dimerization domain. Different conformations of the loop Arg83-His92 have been observed in two monomers of human CRYM in the same asymmetric unit. The peptide bond of Val89-Pro90 is a trans-configuration in one monomer but a cis-configuration in the other. A detailed comparison of the human mu-crystallin structure with its structurally characterized homologs including the overall comparison and superposition of active sites was conducted. Finally, a putative T(3)-binding site in human CRYM is proposed based on comparison with structural homologs.


    Organizational Affiliation

    National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, People's Republic of China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mu-crystallin homolog
A, B
312Homo sapiensMutation(s): 0 
Gene Names: CRYM (THBP)
EC: 1.5.1.25
Find proteins for Q14894 (Homo sapiens)
Go to Gene View: CRYM
Go to UniProtKB:  Q14894
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NDP
Query on NDP

Download SDF File 
Download CCD File 
A, B
NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
C21 H30 N7 O17 P3
ACFIXJIJDZMPPO-NNYOXOHSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.213 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 70.980α = 90.00
b = 90.860β = 90.00
c = 101.183γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
SCALEPACKdata scaling
HKL-2000data collection
DENZOdata reduction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-02-27
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2012-05-23
    Type: Other
  • Version 1.4: 2017-10-18
    Type: Advisory, Refinement description
  • Version 1.5: 2018-08-08
    Type: Data collection