7KQX

MIF Y99C homotrimeric mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.153 
  • R-Value Observed: 0.154 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

A Cysteine Variant at an Allosteric Site Alters MIF Dynamics and Biological Function in Homo- and Heterotrimeric Assemblies.

Skeens, E.Pantouris, G.Shah, D.Manjula, R.Ombrello, M.J.Maluf, N.K.Bhandari, V.Lisi, G.P.Lolis, E.J.

(2022) Front Mol Biosci 9: 783669-783669

  • DOI: https://doi.org/10.3389/fmolb.2022.783669
  • Primary Citation of Related Structures:  
    7KQX

  • PubMed Abstract: 

    Macrophage migration inhibitory factor (MIF) is an inflammatory protein with various non-overlapping functions. It is not only conserved in mammals, but it is found in parasites, fish, and plants. Human MIF is a homotrimer with an enzymatic cavity between two subunits with Pro1 as a catalytic base, activates the receptors CD74, CXCR2, and CXCR4, has functional interactions in the cytosol, and is reported to be a nuclease. There is a solvent channel down its 3-fold axis with a recently identified gating residue as an allosteric site important for regulating, to different extents, the enzymatic activity and CD74 binding and signaling. In this study we explore the consequence of converting the allosteric residue Tyr99 to cysteine (Y99C) and characterize its crystallographic structure, NMR dynamics, stability, CD74 function, and enzymatic activity. In addition to the homotrimeric variant, we develop strategies for expressing and purifying a heterotrimeric variant consisting of mixed wild type and Y99C for characterization of the allosteric site to provide more insight.


  • Organizational Affiliation

    Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI, United States.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Macrophage migration inhibitory factor
A, B, C
114Homo sapiensMutation(s): 1 
Gene Names: MIFGLIFMMIF
EC: 5.3.2.1 (PDB Primary Data), 5.3.3.12 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P14174 (Homo sapiens)
Explore P14174 
Go to UniProtKB:  P14174
PHAROS:  P14174
GTEx:  ENSG00000240972 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP14174
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
SO4 (Subject of Investigation/LOI)
Query on SO4

Download Ideal Coordinates CCD File 
D [auth A],
M [auth B],
U [auth C]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL (Subject of Investigation/LOI)
Query on GOL

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
G [auth A]
H [auth A]
N [auth B]
E [auth A],
F [auth A],
G [auth A],
H [auth A],
N [auth B],
O [auth B],
P [auth B],
Q [auth B],
R [auth B],
S [auth B],
V [auth C],
W [auth C],
X [auth C],
Y [auth C],
Z [auth C]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
IPA (Subject of Investigation/LOI)
Query on IPA

Download Ideal Coordinates CCD File 
I [auth A],
J [auth A],
K [auth A],
L [auth A],
T [auth B]
ISOPROPYL ALCOHOL
C3 H8 O
KFZMGEQAYNKOFK-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.60 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.153 
  • R-Value Observed: 0.154 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.984α = 90
b = 68.062β = 90
c = 86.737γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
SCALEPACKdata scaling
PHASERphasing
PDB_EXTRACTdata extraction
HKL-2000data reduction

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2022-01-19
    Type: Initial release
  • Version 1.1: 2023-02-01
    Changes: Database references
  • Version 1.2: 2023-10-25
    Changes: Data collection, Refinement description