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Blumenthal, Donald K.; Trewhella, Jill | Conformationally dynamic C helix of the RIalpha subunit of protein kinase A mediates isoform-specific domain reorganization upon C subunit binding. | Different isoforms of the full-length protein kinase A (PKA) regulatory subunit homodimer (R2) and the catalytic (C) subunit-bound holoenzyme (R2C2) have very different global structures despite similar molecular weights and domain organization within their primary sequences. To date, it has been th... | Protein Isoforms; Global Structures; cAMP | 2005-10-21 |
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Blumenthal, Donald K. | Effects of deletions in the central helix of calmodulin on enzyme activation and peptide binding. | Using site-directed mutagenesis we have expressed in Escherichia coli three engineered calmodulins (CaM) containing deletions in the solvent-exposed region of the central helix. These are CaM delta 84, Glu-84 removed; CaM delta 83-84, Glu-83 and Glu-84 removed; and CaM delta 81-84, Ser-81 through Gl... | Drug Effects; Genetics; Metabolism | 1989-05-15 |