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  • Title: Evidence for indole-3-acetic acid binding site in plant peroxidases. Structural similarity between peroxidases and auxin-binding proteins.
    Author: Savitsky PA, Rojkova AM, Tishkov VI, Ouporov IV, Rudenskaya GN, Gazaryan IG.
    Journal: Biochemistry (Mosc); 1998 Jun; 63(6):629-33. PubMed ID: 9668202.
    Abstract:
    Application of computer methods allowed us to demonstrate that plant peroxidases and auxin-binding proteins contain structurally similar fragments. The mapping of the fragments was done using a model structure of horseradish peroxidase. Five of six structurally similar fragments belong to the distal domain and form a subdomain in plant peroxidases that includes the distal heme-coordinating sequence, LHFHDC (amino acid residues 39-44 in horseradish peroxidase). The existence of a substrate-binding site for indole-3-acetic acid in the distal subdomain comprising helices A (whole), B (middle), C (beginning), and D (whole) and the loop between helices D and D' is discussed.
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