Available at:

• http://www.jphilo.mailway.com

SEDNTERP (Sedimentation Utility Software)

The SEDNTERP sedimentation interpretation/database program is a general purpose tool for the interpretation of sedimentation velocity and sedimentation equilibrium experiments. It collects many diverse functions into a single program. The program uses a database of information about amino acids, common salts and buffers, etc., and allows the user to build a second database of information about samples, solvents, experimental results (sigma values from sedimentation equilibrium and raw sedimentation coefficients), and interpreted results (molecular weights, s_20,w, f/f_o, axial ratios, etc.).

SVEDBERG (Sedimentation Velocity Software)

SVEDBERG uses an approach of directly fitting velocity scans. It simultaneously fits up to 100 scans to one of several different approximate solutions of the Lamm equation, to derive both sedimentation and diffusion coefficients (or molecular masses) for up to 4 individual components in a mixture, with error statistics for all derived parameters. A Claverie finite-element velocity simulator is also included.

DCDT+ (Sedimentation Velocity Software)

DCDT+ integrates an implementation of Walter Stafford's DCDT method with non-linear least squares fitting to derive sedimentation and diffusion coefficients (or molecular masses) for up to 5 individual components in a mixture, with error statistics for all derived parameters. A quick test is included for whether too many scans are being used in the analysis. Raw sedimentation coefficients can be internally converted to s_20,w values. For use with interacting systems DCDT+ derives and displays the g^(s*) distribution, and calculates weight-, z-, and z+1-average sedimentation coefficients.

XLGraph (Sedimentation Utility Software)

XLGraph is a Windows* (3.1/95/98) program that is useful for general graphing of XL-A and XL-I data and performing data transformations [ln(c) versus r²/2 plots, conversion of x-axis to sedimentation coefficient, dc/dt plots) and file utility functions (subtracting baselines, averaging scans). It can automatically graph and/or print new scans as they are acquired.

* All trademarks are the property of their respective owners. Where applicable, the PCR process is covered by patents owned by Roche Molecular Systems, Inc., and F. Hoffmann-LaRoche, Ltd.

For Research Use Only; not for use in diagnostic procedures.