The protein part of a holoenzyme is called apoenzyme . The non-protein part of a holoenzyme is called cofactor. Co-factor could be a metal ion or an organic compound.
Holoenzyme is the complete enzyme consisting of an apoenzyme and a cofactor. Select the option that correctly identifies the nature of apoenzyme and cofactor {:("Apoenzyme","Cofactor"),("1) Protein","Non - protein"),("2) Non - protein","Protein"),("3) Protein","Protein"),("4) Non - protein","Non - protein"):}