Allostery in the nitric oxide dioxygenase mechanism of flavohemoglobin

AM Gardner, PR Gardner - Journal of Biological Chemistry, 2021 - ASBMB
… activate the NO dioxygenase function of Escherichia coli flavohemoglobin. Steady-state and
E and F-helices and switches an electron transfer gate formed by LysF7, GlnE7, and water. …

Dioxygen and glucose force motion of the electron-transfer switch in the iron (III) flavohemoglobin-type nitric oxide dioxygenase

AM Gardner, PR Gardner - Journal of Inorganic Biochemistry, 2023 - Elsevier
… of the Escherichia coli flavoHb-NOD [8,9]. However, in the resting state, the Fe(III)-flavoHb
binds … and the bound ‘Coulomb blockade’ water molecule poised between the FAD C8M and …

The dual function of flavodiiron proteins: oxygen and/or nitric oxide reductases

CV Romão, JB Vicente, PT Borges, C Frazão… - JBIC Journal of …, 2016 - Springer
… Glyoxalases and persulfide dioxygenases are examples of … a Diiron centre region of the
NO reducing Escherichia coli … enzyme is the cytoplasmatic flavohaemoglobin, having as the …

Ordered Motions in the Nitric-Oxide Dioxygenase Mechanism of Flavohemoglobin and Assorted Globins with Tightly Coupled Reductases

PR Gardner - Protein Reviews: Volume 23, 2022 - Springer
… -detoxifying NO metabolic activity with the flavoHb in Escherichia coli (Gardner et al. 1998a;
… modeled on the E. coli ferric flavoHb with a bridging Coulomb blockade water molecule (W) …

Expressed Soybean Leghemoglobin: Effect on Escherichia coli at Oxidative and Nitrosative Stress

OV Kosmachevskaya, EI Nasybullina, KB Shumaev… - Molecules, 2021 - mdpi.com
… , NO-dioxygenase, and peroxynitrite isomerase can play a pivotal role in the overall … the
synthesis of flavohemoglobin which plays a key role in protecting bacterial cells against NO [74]. …

Structure of Escherichia coli flavodiiron nitric oxide reductase

…, PT Borges, BL Victor, P Lamosa, E Silva… - Journal of Molecular …, 2016 - Elsevier
Escherichia coli, different detoxification systems have been identified: flavohaemoglobin (Hmp)
NO denitrosylase/dioxygenase [… layers of waters surrounding a protein core. Additionally, …

[HTML][HTML] Flavohaemoglobin: The pre-eminent nitric oxide–detoxifying machine of microorganisms

RK Poole - F1000Research, 2020 - ncbi.nlm.nih.gov
… It is soluble in water (approximately 1.6 mM at 37 C and 1.94 … to the NO dioxygenase
activities of flavohaemoglobin 12 . … Thus, for example, the Escherichia coli flavohaemoglobin (…

[HTML][HTML] New Insights Into the Function of Flavohemoglobin in Mycobacterium tuberculosis: Role as a NADPH-Dependent Disulfide Reductase and D-Lactate …

N Thakur, AN Sharma, MD Hade, A Chhaya… - Frontiers in Cellular …, 2022 - frontiersin.org
Mycobacterium tuberculosis (Mtb) produces an unconventional flavohemoglobin (MtbFHb)
that carries a FAD-binding site similar to D-lactate dehydrogenases (D-LDH) and oxidizes D-…

Molecular characterization and expression profiling of two flavohemoglobin genes play essential roles in dissolved oxygen and NO stress in Saitozyma podzolica …

Q Yang, Y Ran, S Guo, F Li, D Xiang, Y Cao… - International Journal of …, 2023 - Elsevier
… Hence, the Fhb, also known as NO-dioxygenase, can … in an ice bath and a boiling water bath
three times for 10 min. … washed twice with 1 mL of distilled water, and re-suspended in 1 mL …

Giardia duodenalis: Flavohemoglobin is involved in drug biotransformation and resistance to albendazole

…, R Argüello-García, C Vázquez, E Saavedra… - PLoS …, 2022 - journals.plos.org
… Trophozoites were harvested by chilling the tubes in an iced water bath for 1 h. Detached …
electron shuttles, and one flavohemoglobin (gFlHb) with nitric oxide dioxygenase activity [14,33…