since your pattern is a simple string, you can use index and substr. 

my $str = "ACGTTGGCTATTGGGCCCGCT";
my $pattern = "GTT";
my $offset = index($str,$pattern) + length($pattern) + 3;
$str = substr($str,$offset);
print $str;

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In reply to Re: how to remove characters before and after a search pattern in a string? by thunders
in thread how to remove characters before and after a search pattern in a string? by BhariD

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