SOMO SAS: Set Molecular Weight for P(r)

| # Manual

## Set Molecular Weight for P(r):

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Last updated: January 2018

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Synopsis

Since the P(r) vs. r curve can be optionally normalized by the ratio between the area under the P(r) curve and the molecular weight of the structure (or bead model), a value for the molecular weight must be entered when loading P(r) files that do not contain a molecular weight. When a P(r) curve is loaded or computed via an indirect Fourier transformation and the molecular weight is not known, this pop-up window will appear asking for the molecular weight.

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Details

The following options are available:

- Molecular Weight (Daltons): Here you can enter the molecular weight

- Previously recorded MWs If this is enabled, a window will pop up from which you can select known molecular weights. These will be available from previous entries of the molecular weight in this window or from PDB loads in the main somo panel. To clear the known molecular weights, you can Clear remembered molecular weights from the Micellaneous Options of the SAS Options window. Note that known molecular weights are not stored between sessions.

- Do not normalize If this button appears and you do not have a molecular weight, you can use it to skip the P(r) normalization process. The Normalize checkbox of the P(r) section of SAS window will be automatically unchecked.

- Set to last used weight If this button is enabled, you can use it to set the molecular weight to the last used value as shown

- Remember these values ? Default: Checked. If this is checked, the value for the current file will be remembered automatically, skiping further display of this window. If you want to reenter a molecular weight that you have remembered, clear the known molecular weights, by clicking Clear remembered molecular weights from the Micellaneous Options of the SAS Options window. Note that known molecular weights are not stored between sessions.

- Remember for files that contain: ? Default: Unchecked. If this is checked, you can enter text that will be tested (true if the name contains the specified string) against future file names and the entered molecular weight will be used.

- Help Brings up this window

- Close Closes up this window and processing continues. Note: If you have not specified a molecular weight (or, if available, Do not normalize), this window will immediately reappear until you enter one.

www contact: Emre Brookes

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Last modified on January 10, 2018.