1MIF

MACROPHAGE MIGRATION INHIBITORY FACTOR (MIF)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Work: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure at 2.6-A resolution of human macrophage migration inhibitory factor.

Sun, H.W.Bernhagen, J.Bucala, R.Lolis, E.

(1996) Proc.Natl.Acad.Sci.USA 93: 5191-5196


  • PubMed Abstract: 
  • Macrophage migration inhibitory factor (MIF) was the first cytokine to be described, but for 30 years its role in the immune response remained enigmatic. In recent studies, MIF has been found to be a novel pituitary hormone and the first protein iden ...

    Macrophage migration inhibitory factor (MIF) was the first cytokine to be described, but for 30 years its role in the immune response remained enigmatic. In recent studies, MIF has been found to be a novel pituitary hormone and the first protein identified to be released from immune cells on glucocorticoid stimulation. Once secreted, MIF counterregulates the immunosuppressive effects of steroids and thus acts as a critical component of the immune system to control both local and systemic immune responses. We report herein the x-ray crystal structure of human MIF to 2.6 angstrom resolution. The protein is a trimer of identical subunits. Each monomer contains two antiparallel alpha-helices that pack against a four-stranded beta-sheet. The monomer has an additional two beta-strands that interact with the beta-sheets of adjacent subunits to form the interface between monomers. The three beta-sheets are arranged to form a barrel containing a solvent-accessible channel that runs through the center of the protein along a molecular 3-fold axis. Electrostatic potential maps reveal that the channel has a positive potential, suggesting that it binds negatively charged molecules. The elucidated structure for MIF is unique among cytokines or hormonal mediators, and suggests that this counterregulator of glucocorticoid action participates in novel ligand-receptor interactions.


    Related Citations: 
    • The Subunit Structure of Human Migration Inhibitory Factor: Evidence for a Trimer
      Sun, H.-W.,Swope, M.,Cinquina, C.,Bedarkar, S.,Bernhagen, J.,Bucala, R.,Lolis, E.
      () TO BE PUBLISHED --: --


    Organizational Affiliation

    Department of Pharmacology, Yale University, New Haven, CT 06510, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MACROPHAGE MIGRATION INHIBITORY FACTOR
A, B, C
115Homo sapiensGene Names: MIF (GLIF, MMIF)
EC: 5.3.2.1, 5.3.3.12
Find proteins for P14174 (Homo sapiens)
Go to Gene View: MIF
Go to UniProtKB:  P14174
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.6 Å
  • R-Value Work: 0.200 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 96.800α = 90.00
b = 96.800β = 90.00
c = 106.300γ = 120.00
Software Package:
Software NamePurpose
X-PLORphasing
XDSdata reduction
X-PLORrefinement
X-PLORmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1996-01-26 
  • Released Date: 1996-12-07 
  • Deposition Author(s): Sun, H.-W., Lolis, E.

Revision History 

  • Version 1.0: 1996-12-07
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance