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Although intrinsically disordered proteins or protein domains (IDPs or IDD) are less abundant in bacteria than in eukaryotes, their presence in pathogenic bacterial proteins is important for protein‐protein interactions. The protein tyrosine kinase A (PtkA) from Mycobacterium tuberculosis possesses an 80‐residue disordered region (IDDPtkA) of unknown function, located N‐terminally to the well‐folded...
The catalytic subunit of cAMP-dependent protein kinase (PKA) can easily be expressed in Escherichia coli and is catalytically active. Four phosphorylation sites are known in PKA (S10, S139, T197 and S338), and the isolated recombinant protein is a mixture of different phosphorylated forms. Obtaining uniformly phosphorylated protein requires separation of the protein preparation leading to significant...
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