$/ = '//'; # input record separator
print join( " ", grep { s/^DE\s+// } split /\n/ ), "\n"
    while <DATA>;

[download]

Output: 

AC2-(EC 2.7.00.1) (Adaptor-associated protein 1).
Serine/threonine-protein kinase (EC 2.7.99.1) (Tyrosine binding protei
+n) (p35BP).
Serine/threonine-aaaaaa kinase (Tyrosine kinase 1) (Apoptosis-associat
+ed tyrosine kinase) (AATYK) (Brain binding protein) (p35BP).

[download]

is how I'd do it;)

In reply to Re: swissprot parsing DE by FunkyMonk
in thread swissprot parsing DE by Anonymous Monk

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