Kalmar "protein mai sauƙi" tana nufin nau'in sunadaran da ke tattare da sarƙoƙi na amino acid kawai, ba tare da wasu rukunin sinadarai ba. Ba ya ƙunshe da ƙungiyoyin da ba su da furotin kamar carbohydrates, lipids ko acid nucleic. Wadannan sunadaran kuma ana kiran su da homoproteins ko albuminoids. Misalan sunadarai masu sauƙi sun haɗa da albumins, globulins, da glutelins.
