| |||||
 |
|
|
|||
|
|
How do I select residues in a particular chain? To see other biotech frequently asked questions,
please visit http://biotech.fyicenter.com/faq/
(Continued from previous question...) How do I select residues in a particular chain? The method for selecting a range of residues in a particular chain has improved in RasMol version 2.6. It can now be done using the syntax "select 1-25:a" to select residues 1 to 25 in chain A. Similarly "select 25:a" and "select :a" will select just residue 25 in chain A and all of chain A respectively. In RasMol versions prior to v2.6, you'd have to type an atom expression of the form "select 1-25 and **a" where the final term is a primitive expression. This primitive expression is a wildcarded form of the form "cys37a" where the residue name and number are replaced by the wildcard "*". Note that care has to be made to ensure that RasMol can determine which field is being specified. For example, although "select *a" will select all resiues in chain A, if the chain identifier was a number, "select **1" would have to be used, as "select *1" denotes residue 1. To avoid any ambiguity, an optional colon character is now used to prefix the chain identifier, allowing expressions such as "cys:a", "cys35:1", "*:1" and even just ":1". See also the RasMol Manual.
(Continued on next question...)
Other Frequently Asked Questions
|
||||
|
|
|
|||
