Truncation and heme pocket mutations reduce production of functional catalase HPII in Escherichia coli.

Abstract excerpt

The subunit of catalase HPII from Escherichia coli is 753 residues in length and contains a core of approximately 500 residues, with high structural similarity to all other heme catalases. To this core are added extensions of approximately 80 and 180 residues at the N- and C-termini, respectively. The tetrameric structure is made up of a pair of interwoven dimers in which 90 N-terminal residues of each subunit...

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