Download e-book for kindle: Beginning Perl for Bioinformatics by James Tisdall

By James Tisdall

ISBN-10: 0596000804

ISBN-13: 9780596000806

With its hugely built skill to become aware of styles in facts, Perl has turn into essentially the most well known languages for organic information research. but when you're a biologist with very little programming event, beginning out in Perl could be a problem. Beginning Perl for Bioinformatics is designed to get you quick over the Perl language barrier via forthcoming programming as a major new laboratory ability, revealing Perl courses and methods which are instantly priceless within the lab. each one bankruptcy makes a speciality of fixing a specific bioinformatics challenge or category of difficulties, beginning with the easiest and extending in complexity because the e-book progresses. each one bankruptcy comprises programming routines. by way of the tip of the publication you'll have a great knowing of Perl fundamentals, a suite of courses for such projects as parsing BLAST and GenBank, and the abilities to tackle extra complex bioinformatics programming.

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Extra info for Beginning Perl for Bioinformatics

Example text

The substitution operator is an example of the use of regular expressions. Regular expressions are the key to text manipulation, one of the most powerful features of Perl as you'll see in later chapters. 5 Using the Perl Documentation A Perl programmer's most important resource is the Perl documentation. It should be installed on your computer, and it may also be found on the Internet at the Perl site. The Perl documentation may come in slightly different forms on your computer system, but the web version is the same for everybody.

The details of how to run a program depend on the type of computer you have (see Chapter 2). Let's say the program is on your computer in a file called example4-1. As you recall from Chapter 2, if you are running this program on Unix or Linux, you type the following in a shell window: perl example4-1 On a Mac, open the file with the MacPerl application and save it as a droplet, then just double-click on the droplet. On Windows, type the following in an MS-DOS command window: perl example4 -1 If you've successfully run the program, you'll see the output printed on your computer screen.

4] We're ignoring the mechanism of the splicing out of introns, obviously. The T stands for thymine; the U stands for uracil. IT-SC 51 Example 4-3. /usr/bin/perl -w # Transcribing DNA into RNA # The DNA $DNA = 'ACGGGAGGACGGGAAAATTACTACGGCATTAGC'; # Print the DNA onto the screen print "Here is the starting DNA:\n\n"; print "$DNA\n\n"; # Transcribe the DNA to RNA by substituting all T's with U's. $RNA = $DNA; $RNA =~ s/T/U/g; # Print the RNA onto the screen print "Here is the result of transcribing the DNA to RNA:\n\n"; print "$RNA\n"; # Exit the program.

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Beginning Perl for Bioinformatics by James Tisdall

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