TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Method: The method further involves providing a solution or suspension containing ions of the metal and the protein comprising the elastic protein; contacting the solution with a reducing agent under conditions to reduce the ions of the metal to zerovalent metal to provide a reduced solution comprising metal nanoparticles dispersed in a protein matrix comprising the elastic protein. The method further involves contacting the reduced solution with an electrically conductive support material under conditions to deposit at least some of the electrocatalyst metal nanoparticles dispersed in the protein matrix comprising the elastic protein on the surface of the support. Preferred Components: The metal is a noble metal. The noble metal is selected from platinum, gold, silver, iridium, palladium, osmium, rhodium, ruthenium and/or their alloys, preferably platinum, gold, and silver. The metal is an electrocatalyst metal. The electrocatalyst metal is selected from platinum, palladium, gold, silver, manganese, iron, magnesium, and compounds and/or their alloys. The electrocatalyst metal is platinum metal and/or a platinum alloy. The electrocatalyst metal is a platinum alloy selected from: Pt/Ru, Pt/Co, Pt/Fe, Pt/Ni, Pt/Mn, Pt/Ti, Pt/Cr, Pt/Cu, Pt/Pd, Pt/Rh, Pt/Ir, Pt/Ag, and Pt/Au. The electrocatalyst metal is palladium metal and/or a palladium alloy. The electrocatalyst metal is a palladium alloy selected from: Pd/Co, Pd/Ni, Pd/Au, Pd/Ru, Pd/Ir, Pd/Mn, Pd/Ti, Pd/Cr, Pd/Cu, Pd/Ag and Pd/Rh. The electrocatalyst metal is manganese and/or its compound or alloy. The electrically conductive support comprises carbon nanotubes, carbon nanobuds, and/or carbon nanofibers. The electrically conductive support comprises multiwalled carbon nanotubes.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The elastic protein is selected from resilin, silk proteins, elastin, titin, fibrillin, lamprin, gliadin, abductin, byssus, spectrin, and/or their homologs or fragments. The elastic protein comprises repeating units comprising tyrosine, serine and/or threonine-containing amino acid residues. The elastic protein or its homolog or fragment is rec-1 resilin or its homolog. The elastic protein or its homolog or fragment is An 16-resilin or its homolog. The elastic protein or its homolog or fragment is silk fibroin, where the silk fibroin is Bombyx mori silk fibroin. EXAMPLE - No suitable example given.