The following code reads the content of a (simulated) file, extracts the two values and tests them. A regex is defined for each field. They are combined into a single regex which describes the rest of the line and specifies that both values should be extracted. If the match is successful, both values are tested. 
use strict;
use warnings;
use Test::Simple tests => 3;
my $fname = \do {
    my $line = "BOGUS PPI3_SYNY3 276 aa contentar BCT 13-NOV-2019\n";
};

open my $FH, '<', $fname or die "Cannot open $fname for input";
my $content = <$FH>;
close $FH;

my $get_bogus = qr/ [A-Z0-9_]+ /x;
my $get_acid  = qr/ [0-9]+\s[a-z]+ /x;

my ( $bogus, $acids )
    = $content =~ / BOGUS \s+ ($get_bogus) \s+ ($get_acid) /x;

if (ok( ( defined($bogus)  and defined($acids) ), 'Match') ) {
    ok( $bogus eq "PPI3_SYNY3" , "extracted '$bogus'");
    ok( $acids eq '276 aa', "extracted '$acids'");
}

[download]

OUTPUT: 

1..3
ok 1 - Match
ok 2 - extracted 'PPI3_SYNY3'
ok 3 - extracted '276 aa'

[download]
Bill

In reply to Re: getting a sequence of numbers and leters by BillKSmith
in thread getting a sequence of numbers and leters by shabird

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