Nucleic acid compositions encoding non-aggregating chromofluoroproteins and mutants thereof, as well as the proteins encoded by the same, are provided. The compounds are suitable, for example, for treating metabolic syndrome, insulin resistance, obesity, and diabetes. A method of powering an engine to minimize wear, by burning a fuel containing boron compounds. Each contact element of the first set is electrically connected to the first resistive element. A wind-power plant; the use of a wind-power unit; and a method of generating electric power are described.