?:definition
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Interacting selectively and non-covalently with the MH2 (MAD homology 2) domain of a protein. The MH2 domain is found at the carboxy-terminus of MAD related proteins such as Smads. The MH2 domain mediates interaction with a wide variety of proteins and provides specificity and selectivity to Smad function and also is critical for mediating interactions in Smad oligomers. [GOC:curators]
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