Component Manual for the Xray-Tracing Package McXtrace, version 3.8.6

12.23  The SAXSPDB McXtrace Component

Release: McXtrace 1.0

A sample describing a thin solution of proteins. This components must be compiled with the -lgsl and -lgslcblas flags (and possibly linked to the appropriate libraries).

Identification

Description

This components expands the formfactor amplitude of the protein on spherical harmonics and computes the scattering profile using these. The expansion is done on amino-acid level and does not take hydration layer into account. The component must have a valid .pdb-file as an argument.

This component is very slow. You should rather use the SAXSPDBFast sample component.

Input parameters

Parameters in boldface are required; the others are optional.

Name

Unit

Description

Default

RhoSolvent

Å

Scattering length density of the buffer.

9.4e-14

Concentration

mM

Concentration of sample.

0.01

AbsorptionCrosssection

1/m

Absorption cross section of the sample.

0.0

xwidth

m

Dimension of component in the x-direction.

yheight

m

Dimension of component in the y-direction.

zdepth

m

Dimension of component in the z-direction.

SampleToDetectorDistance

m

Distance from sample to detector (for focusing the scattered x-rays).

DetectorRadius

m

Radius of the detector (for focusing the scattered x-rays).

PDBFilepath

Path to the file describing the high resolution structure of the protein.

”PDBfile.pdb”

Links