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  • Title: Purification, N-terminal amino acid sequence and properties of hydroxymethylbilane synthase (porphobilinogen deaminase) from Escherichia coli.
    Author: Hart GJ, Abell C, Battersby AR.
    Journal: Biochem J; 1986 Nov 15; 240(1):273-6. PubMed ID: 3548707.
    Abstract:
    Hydroxymethylbilane synthase (porphobilinogen deaminase) was purified to apparent homogeneity from Escherichia coli. The enzyme is a monomer of Mr approx. 40,000. The Km for porphobilinogen and relative Vmax. values have been obtained at various pH values over the range 6.2-8.8, enabling pK values for ionizable groups important for activity to be determined. The N-terminal amino acid sequence is presented.
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