7FG8

H/D exchanged Hen egg-white lysozyme denatured in acidic conditions and refolded in solution

Summary for 7FG8

• Entry DOI: 10.2210/pdb7fg8/pdb
• Related: 7FGU 7FGV
• Descriptor: Lysozyme C, CHLORIDE ION, SODIUM ION, ... (4 entities in total)
• Functional Keywords: h/d exchange, denatured and refolded, hydrolase
• Biological source: Gallus gallus (Chicken)
• Total number of polymer chains: 1
• Total formula weight: 14389.60

Authors

Kita, A.,Morimoto, Y. (deposition date: 2021-07-26, release date: 2022-02-09, Last modification date: 2024-10-09)

Primary citation

Kita, A.,Morimoto, Y.
Hydrogen/Deuterium Exchange Behavior During Denaturing/Refolding Processes Determined in Tetragonal Hen Egg-White Lysozyme Crystals.
Mol Biotechnol., 64:590-597, 2022

PubMed Abstract: The hydrogen/deuterium (H/D) exchange of main-chain amide hydrogens in the protein that denatured and refolded in deuterated solvent is considered to contain the traces of hydrogen bond cleavages or the exposure to solvent of the buried part of the protein during the denaturing and refolding (denaturing/refolding) processes. Here, we report the H/D exchange behaviors in hen egg-white lysozymes denatured under acidic conditions, basic conditions, and thermal conditions and then refolded in deuterated solvents, using crystallographic methods. The results indicate that the space containing the Trp28 side chain was hardly exposed to the solvent in acidic conditions, but exposed under basic or heated conditions. Moreover, the β-bridges between Tyr53 and Ile58 in strands β2 and β3, which are in a highly conserved region, show some tolerance to changes in pD. The results indicate that crystallographic method is one of the powerful tools to analyze the denaturing/refolding processes of proteins.

PubMed: 35028904
DOI: 10.1007/s12033-022-00447-7

Experimental method

NEUTRON DIFFRACTION (2 Å)
X-RAY DIFFRACTION (2 Å)