Information Available from Various Spectroscopic Techniques


--
Techniques
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- Structure
-

-

Dynamics
-
- Energetics
 
IR
*
  Fingerprint
*
  H-D exchange
*
  Ionization states
 
UV/Visible
*
  Quanltative, DNA conformation
*
  Follow reaction
*
  Ligand binding
 
Fluorescence
**
  Pairwise 2-5 nm (solution)
***
  Molecular motion ~ps
**
  Environmental probe, pH
 
NMR
***
  Pairwise 0.2-1 nm (solution)
***
  ms - ps
**
  Ionization states, ligand binding
 
EPR
*
  Fingerprint around one center
**
  Diffusion of spin label
*
  Environmental probe
 
Scattering
**
  Overall shape
**
  Net movement of cells and molecules
*
  Association/dissociation
 
Raman
*
  Fingerprint
*
  H-D exchange
*
  Ionization states
 
Optical Activity
**
  Secondary structure (solution)
*
  conformation changes
*
  Ligand binding
 
Microscopy
****
  ~2nm (solid); ~1mm (solution)
*
  Photobleaching recovery
   
 
Diffraction
****
  0.2 nm (crystals)
*
  Temperature factors
*
  Energy calculation from coordinate


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