[EMBOSS] question using 'matpatmotifs'

[Jean Mao]

Hi, 

I used 'swissprot:hair_drome' as input sequence and run 'matpatmotifs' in
EMBOSS and got 0 hits. However, when I used the same input sequnce on
interproscan, the result
(http://www.ebi.ac.uk/cgi-bin/iprscan/iprscan?tool=iprscan&jobid=iprscan-200
70118-14025926) show that it contains basic Helix-loop-helix motif which is
ID PS50888 in prosite database. Is this a bug or did I do something wrong? I
also run the same sequence against the 'motifs' program in GCG package.
Again no hit was found. 

Thank you.

Jean Mao