Albumins	Bacterial proteins	Blood proteins	Bone morphogenetic proteins	Carrier proteins
Contractile proteins	Cytoplasmic or nuclear receptors	Deoxyribonucleic acid (DNA) binding proteins	Dietary proteins	Egg proteins
Globulins	Glycoproteins	Hemeproteins	Interferons	Lectins
Lipoproteins	Membrane proteins	Metalloproteins	Neculeoproteins	Nerve tissue proteins
Peptones	Plant proteins	Prions	Recombinant proteins	Serpins
Transcription factors	Viral proteins