use strict; use warnings; use HTML::TreeBuilder; my $str = 'GAL7

GAL7



Start<-ATG ATG->End

>YBR018C  GAL7  275433  275933
TTTGATATCACTCACAACTATTGCGAAGCGCTTCAGTGAAAAAATCATAA
GGAAAAGTTGTAAATATTATTGGTAGTATTCGTTTGGTAAAGTAGAGGGG
GTAATTTTTCCCCTTTATTTTGTTCATACATTCTTAAATTGCTTTGCCTC
TCCTTTTGGAAAGCTATACTTCGGAGCACTGTTGAGCGAAGGCTCATTAG
ATATATTTTCTGTCATTTTCCTTAACCCAAAAATAAGGGAAAGGGTCCAA
AAAGCGCTCGGACAACTGTTGACCGTGATCCGAAGGACTGGCTATACAGT
GTTCACAAAATAGCCAAGCTGAAAATAATGTGTAGCTATGTTCAGTTAGT
TTGGCTAGCAAAGATATAAAAGCAGGTCGGAAATATTTATGGGCATTATT
ATGCAGAGCATCAACATGATAAAAAAAAACAGTTGAATATTCCCTCAAAA
ATGACTGCTGAAGAATTTGATTTTTCTAGCCATTCCCATAGACGTTACAA
'; my $tree = HTML::TreeBuilder->new; $tree->parse ($str); print $_->as_text () . "\n" for $tree->find ('pre');