Peptide sequence: ATASPRSDTS NNHSGRLQLQ VTVSSAKLKR KKNWFGTAIY TEVVVDGEIT Sequence homology: Cow: 100%; Dog: 100%; Guinea Pig: 86%; Horse: 93%; Human: 100%; Mouse: 86%; Pig: 93%; Rabbit: 100%; Rat: 100%. WW domain-containing proteins are found in all euka