Ooh, that is cool! It is indeed an active nucleus (type 1 Seyfert, SDSS spectral type listed as QSO), but apparently in a galaxy which has been so thoroughly shredded by interaction that we don't see much left of it but the nucleus. The big disk galaxy is Markarian 177. As best I can tell from NED, Mkn 177 is itself a starburst galaxy, which fits with the SDSS spectrum.
Hmm - one might look for gas in Mkn 177 ionized by that AGN if it's really passing through the disk.