Complex sentence: Tervonen (1998) described a salmon natriuretic peptide, named Salmon cardiac peptide, with similar structure and properties, and dendroaspis natriuretic peptide (DNP) is present in the venom of the green mamba.
Split into simpler sentences: Tervonen (1998) described a salmon natriuretic peptide, named Salmon cardiac peptide, with similar structure and properties. As well, dendroaspis natriuretic peptide (DNP) was discovered in the venom of the green mamba.