deerlab.dd_randcoil¶

dd_randcoil = <deerlab.model.Model object>¶

Random-coil model for an unfolded peptide/protein

Parameters:

Returns:

Notes

Parameter List

Name	Lower	Upper	Type	Frozen	Unit	Description
`Nres`	2	1e+03	nonlin	No		Number of residues
`scaling`	0.1	0.4	nonlin	No	nm	Scaling exponent
`length`	0.33	1	nonlin	No		Segment length

Model

$P(r) = \frac{3}{(2\pi\nu_0)^{3/2}}4\pi r^2\exp(-\frac{3 r^2}{\nu_0})$

where $\nu_0 = 3/(12\pi r_0 N \nu)^{3/2}$ , and $N$ is the number of residues, $R_0$ is the segment length, and $\nu$ is the scaling exponent.

Examples

Example of the model evaluated at the start values of the parameters: