$ perl -E '
> $str = q{G_I1E2_GTGGAG^303CTGgacgCCCTGC_I2E3_TACA};
> say for
>    map { tr{[ACGT]}{}cd; $_ }
>    split m{[a-z]+}, $str;'
GGTGGAGCTG
CCCTGCTACA
$

[download]

Cheers,

JohnGG

In reply to Re: extract only uppercases from string by johngg
in thread extract only uppercases from string by losher

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