List the functions of proteins

-cell structure-molecular identity (HLA, Blood group)- morphology of organisms (skin and eye color) -physiological processes as DNA replication, translation and transcription-storage and transportation of particles (electrons/mitochonderion-ions/pumps-macromolecules/cytoskeleton)- intercellular communication- hormones- immune system (antibodies)- cell cycle and mitosis- muscles- energy converter for movement- senses- can be used as energy source.