Results 151 to 160 of about 24,553 (259)

Characterization of the Orphan Cytochrome P450 CYP107J1 From Bacillus subtilis Through Peroxygenase Activity Engineering

open access: yesMicrobial Biotechnology, Volume 19, Issue 5, May 2026.
The orphan cytochrome P450 CYP107J1 with unknown redox partners was rationally modified into H2O2‐driven form. The QE (E251Q/T252E) mutant produced valuable chemicals by simply mixing the enzyme with substrate and H2O2. ABSTRACT Cytochrome P450 monooxygenases (P450s) not only play many physiological roles in oxidative metabolism but are also promising ...
Hideki Kato   +5 more
wiley   +1 more source

The Hemoprotein Hhy1 Promotes Heme‐Dependent Catalase Activity of Ctt1

open access: yesMolecular Microbiology, Volume 125, Issue 5, Page 389-411, May 2026.
A Schizosaccharomyces pombe strain deficient in heme (hem1Δ) and siderophore (Fc) biosynthesis, as well as high‐affinity iron (Fe) uptake (blue), was used to uncover the hemoprotein Hhy1 that promotes the heme‐dependent activity of the catalase Ctt1. In contrast, hhy1Δ cells exhibit reduced Ctt1 activity and increased sensitivity to oxidative stress ...
Tobias Vahsen   +3 more
wiley   +1 more source

Zwitterionic Mn(III)‐Tetraphenyl Porphyrins: Water‐Soluble MRI Contrast Agents with High Relaxivity

open access: yesChemMedChem, Volume 21, Issue 8, 28 April 2026.
Mn(III)‐based contrast agents (MBCAs) are promising and potentially safer alternatives to the Gd(III)‐based contrast agents (GBCAs) currently used in MRI. This study reports the synthesis, physicochemical characterization and first in vivo application of novel Mn(III)‐tetraphenylporphyrin chelates, bearing zwitterionic sulfobetaine or N‐oxide groups ...
Darius Ludolfs   +10 more
wiley   +1 more source

Porphyrin‐Geländer–Helical Conjugated Banister Type Porphyrin Dyads

open access: yesChemistry – A European Journal, Volume 32, Issue 15, 22 April 2026.
Porphyrin arrays go chiral–A porphyrin Geländer macrocycle represents the intriguing prototype architecture of helically chiral butadiyne‐linked porphyrin arrays. This study combines synthetic, spectroscopic, and computational methods to shed light on its structure, chiroptical properties, and tunability, highlighting its promise for advancing ...
Joël F. Keller   +2 more
wiley   +1 more source

Soret-Effect Induced Phase-Change in a Chromium Nitride Semiconductor Film. [PDF]

open access: yesACS Nano
Shuang Y   +9 more
europepmc   +1 more source

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