Complex sentence: Moreover, its amino acid sequence has no homology with other invertebrate myoglobins or with hemoglobins, but is 35% homologous with human indoleamine dioxygenase (IDO), a vertebrate tryptophan-degrading enzyme.
Split into simpler sentences: Moreover, its amino acid sequence has no homology with other myoglobins in invertebrates or hemoglobins. However, it is 35% homologous with human indoleamine dioxygenase (IDO), a vertebrate tryptophan-degrading enzyme.