I do wonder why you're trying to scrape HTML from this site when the life sciences community is actually very far ahead of the game when it comes to providing data in machine-readable formats.

Taking one of the proteins from your list...

use 5.010;
use RDF::Trine;
use RDF::QueryX::Lazy;

my $protein  = 'P61177';
my $pr_url   = sprintf 'http://purl.uniprot.org/uniprot/%s', $protein;

my $database = RDF::Trine::Model->new;
RDF::Trine::Parser->parse_url_into_model($pr_url => $database);

my $query = RDF::QueryX::Lazy->new(<<"QUERY");
SELECT *
WHERE {
    <$pr_url> rdfs:seeAlso ?fam_url .
    ?fam_url rdfs:comment ?family .
    FILTER regex(STR(?fam_url), "^http://purl\.uniprot\.org/interpro/"
+)
}
QUERY

my $results = $query->execute($database);
while (my $result = $results->next())
{
    say $result->{family}, q[ ], $result->{fam_url};
}

[download]

Running that produces the following output:

"Ribosomal_L22_bac-type" <http://purl.uniprot.org/interpro/IPR005727>
"Ribosomal_L22/L17_CS" <http://purl.uniprot.org/interpro/IPR018260>
"Ribosomal_L22" <http://purl.uniprot.org/interpro/IPR001063>
perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'

In reply to Re: Reading particular information from Html page and skipping the page that doesn't contain that information by tobyink
in thread Reading particular information from Html page and skipping the page that doesn't contain that information by rmgzsm9

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.