HullRad is an algorithm for calculating hydrodynamic properties of a macromolcule from a structure file.
HullRad uses a convex hull model to estimate the hydrodynamic volume of a macromolecule.
The above images show convex hull models of two proteins, a DNA duplex, and the bacterial 50s ribosomal subunit.
HullRad is FAST!
Try it out - Download the code or upload your protein PDB file to the server by clicking on a link above.
What HullRad Gives You
Molecular Mass of the protein (g/mol)
Partial Specific Volume (mL/g)
Anhydrous Volume Sphere Radius (Å)
Anhydrous Radius of Gyration (Å) (Note: Compare to SANS, not SAXS)
Maximum Dimension (Å)
Axial Ratio (a/b)
Frictional Ratio (f/f0)
Translational Diffusion Coefficient (cm2/s)
Translational Hydrodynamic Radius (Å)
Sedimentation Coefficient (sec)
Intrinsic Viscosity (cm3/g)
Rotational Diffusion Coefficient (s-1)
Rotational Hydrodynamic Radius (Å)
Patrick Fleming Karen Fleming