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Structure-Function Analysis of the Biotechnologically Important Cytochrome P450 107 (CYP107) Enzyme Family.

Tiara Padayachee1, David C Lamb2, David R Nelson3

  • 1Department of Biochemistry and Microbiology, Faculty of Science, Agriculture and Engineering, University of Zululand, KwaDlangezwa 3886, South Africa.

Biomolecules
|December 23, 2023
PubMed
Summary
This summary is machine-generated.

Cytochrome P450 (CYP) enzymes, specifically CYP107, exhibit flexible active sites. Amino acid interactions within these sites dictate substrate binding, catalytic activity, and multifunctionality for biotechnological applications.

Keywords:
CYP107P450active siteamino acid dynamicscrystal structureenzymatic reactionpolar and hydrophobic interactionssecondary metabolitessubstrate

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Area of Science:

  • Biochemistry
  • Enzymology
  • Structural Biology

Background:

  • Cytochrome P450 monooxygenases (CYPs) are crucial heme-containing enzymes with broad substrate specificity and oxidative capabilities.
  • CYP107 enzymes are vital for producing valuable secondary metabolites through hydroxylation and epoxidation, yet their structural dynamics remain underexplored.

Purpose of the Study:

  • To investigate the active site cavity dynamics and ligand-interacting amino acids in 44 CYP107 crystal structures.
  • To elucidate the structure-function relationships governing CYP107 catalytic activity and multifunctionality.

Main Methods:

  • Analysis of 44 CYP107 crystal structures.
  • Examination of active site cavity volume changes upon ligand binding.
  • Identification of key polar and hydrophobic interactions between substrates and active site residues.

Main Results:

  • CYP107 active site cavities display significant flexibility, with ligand binding altering cavity volume.
  • Polar interactions form salt bridges and proton shuttling pathways, while hydrophobic interactions anchor substrates.
  • Specific amino acid residues and their dynamics within the binding pocket control substrate orientation, anchoring, and catalytic outcomes.

Conclusions:

  • Active site flexibility and amino acid dynamics are critical determinants of CYP107 enzyme function and multifunctionality.
  • Understanding these structure-function relationships provides a basis for the targeted genetic engineering of CYP107 enzymes.
  • This research facilitates the development of novel molecules with biotechnological potential through enzyme engineering.