O le mea lea, e mafai ona vaevaeina proteins informally i ni vasega autu se tolu, lea e fesootai ma fausaga masani tertiary: globular proteins, fibrous proteins, ma membrane proteins. toetoe lava o proteins globular uma soluble ma le tele o enzymes. proteins Fibrous e masani ona fausaga, e pei o collagen, o le vaega autu o connective pepa solo, po o keratin, o le vaega porotini o lauulu ma fao. proteins Membrane masani ona avea o receptors po o le tuuina auala mo polar po o molia molecules e ui atu i le membrane feaveai.O se tulaga faapitoa o intramolecular hydrogen sootaga i totonu o proteins, matitiva puipuia mai le osofaʻiga o le vai ma o lea uunaia ai lo latou lava dehydration, ua taʻua o dehydrons.
faaputuga