Ionic atmosphere effect on the absorption spectrum of a flavoprotein: a reminder to consider solution ions

BD Dratch, Y Orozco-Gonzalez, G Gadda… - The Journal of …, 2021 - ACS Publications
This study utilizes the FMN-dependent NADH: quinone oxidoreductase from Pseudomonas
aeruginosa PAO1 to investigate the effect of introducing an active site negative charge on …

The 4-α-Glucanotransferase AcbQ Is Involved in Acarbose Modification in Actinoplanes sp. SE50/110

S Nölting, C März, L Jacob, M Persicke… - Microorganisms, 2023 - mdpi.com
The pseudo-tetrasaccharide acarbose, produced by Actinoplanes sp. SE50/110, is a α-
glucosidase inhibitor used for treatment of type 2 diabetes patients. In industrial production …

Kinetic solvent viscosity effects uncover an internal isomerization of the enzyme-substrate complex in Pseudomonas aeruginosa PAO1 NADH: quinone …

JA Quaye, J Ball, G Gadda - Archives of Biochemistry and Biophysics, 2022 - Elsevier
Abstract NAD (P) H: quinone oxidoreductases (NQOs) play an essential protective role as
antioxidants in the detoxification of quinones in both Prokaryotes and Eukaryotes. NQO from …

Mutation of a distal gating residue modulates NADH binding in NADH: Quinone oxidoreductase from Pseudomonas aeruginosa PAO1

BM Moni, JA Quaye, G Gadda - Journal of Biological Chemistry, 2023 - ASBMB
Enzymes require flexible regions to adopt multiple conformations during catalysis. The
mobile regions of enzymes include gates that modulate the passage of molecules in and out …

Modifying Corynebacterium glutamicum by metabolic engineering for efficient synthesis of l-lysine

Z Liu, J Liu, F Zhang, W Zhang - Systems Microbiology and …, 2024 - Springer
This study described that a low-producing mutagenic strain was transformed to a l-lysine
high-producing recombinant strain by optimizing the l-lysine metabolic pathway of …

On the use of noncompetitive kinetic isotope effects to investigate flavoenzyme mechanism

K Francis, G Gadda - Methods in Enzymology, 2019 - Elsevier
This account describes the application of kinetic isotope effects (KIEs) to investigate the
mechanistic properties of flavin dependent enzymes. Assays can be conducted during …

Mechanistic investigation of a non-catalytic gating residue in NADH: Quinone oxidoreductase from Pseudomonas aeruginosa PA01

BM Moni - 2022 - scholarworks.gsu.edu
NADH: quinone oxidoreductase from Pseudomonas aeruginosa PAO1 (NQO, PA1024, EC
1.6. 5.9) is a recently reclassified flavin-dependent enzyme that catalyzes the two-electron …

Kinetic Investigation of a Presumed Nitronate Monooxygenase from Pseudomonas aeruginosa PAO1 Establishes a New Class of NAD(P)H:Quinone Reductases

RAG Reis, F Salvi, I Williams, G Gadda - Biochemistry, 2019 - ACS Publications
PA0660 from Pseudomonas aeruginosa PAO1 is currently classified as a hypothetical
nitronate monooxygenase (NMO), but no evidence at the transcript or protein level has been …

The Ionic Atmosphere Effect on the Absorption Spectrum of a Flavoprotein: A Reminder to Consider the Importance of Solution Ions

B Dratch, Y Orozco-Gonzalez, G Gadda, S Gozem - 2021 - chemrxiv.org
Ionizable residues and monoatomic ions in solution modulate enzyme catalysis and the
structural stability of proteins; however, the delicate interplay between these short-range …

Functional Importance of Non-Catalytic Residues in the Active Site of NADH: Quinone Oxidoreductase From Pseudomonas aeruginosa PA01

B Dratch, G Gadda - 2021 - scholarworks.gsu.edu
NADH: quinone oxidoreductase (NQO) from Pseudomonas aeruginosa PA01 is an FMN-
dependent enzyme that utilizes NADH to catalyze the two-electron reduction of a wide …