Ck2+ vs hip9/6/2023 The α subunits do not require the β regulatory subunits to function, this allows dimers to form of the catalytic domains independent of β subunit transcription. It is worth noting that other β isoforms have been found in other organisms but not in humans. The catalytic α domains appear as an α or α’ variant and can either be formed in a homodimer (α & α, or α’ & α’) formation or heterodimer formation (α & α’). The β regulatory domain only has one isoform and therefore within the tetramer will have two β subunits. Ribbon structure of CK2 tetramer containing two α and two β subunitsĬK2 typically appears as a tetramer of two α subunits α being 42 kDa and α’ being 38 kDa, and two β subunits, each weighing in at 28 kDa.
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