Results 141 to 150 of about 43,983 (296)

Graphene/Hemin Hybrid Material as a Catalyst for Degradation of Alkaline Lignin with Hydrogen Peroxide

BioResources, 2017
A graphene/hemin (H-GN) catalyst for lignin degradation was prepared by a wet-chemistry method with graphene oxide and hemin. Hemin was absorbed onto the graphene surface through π-π interaction.
Suzhuang Yu, Li Chen, Zongcheng Yan
doaj   +1 more source

Regulatory and retrograde signaling networks in the chlorophyll biosynthetic pathway

Journal of Integrative Plant Biology, Volume 67, Issue 4, Page 887-911, April 2025.
This review summarizes the regulatory mechanisms that underlie chlorophyll synthesis, including (1) factors that control the activity and stability of tetrapyrrole biosynthesis enzymes, (2) transcriptional and post‐translational regulation of the tetrapyrrole biosynthesis pathway, and (3) the complex roles of tetrapyrrole‐mediated retrograde signaling ...
Yuhong Li, Tianjun Cao, Yunling Guo, Bernhard Grimm, Xiaobo Li, Deqiang Duanmu, Rongcheng Lin   +6 more
wiley   +1 more source

N‐methylation of histidine to tune tautomeric preferences in histidine‐heme coordination and enzyme‐mimetic catalysis

Smart Molecules
Enzymes with active sites involving histidine selectively utilize either the δ‐ or ε‐nitrogen atom (Nδ or Nε) of the histidine imidazole for catalysis.
Ruikai Du, Yunbo Lv, Haifeng Wu, Baoli Zhang, Yuanxi Liu, Shichao Xu, Shan Li, Zhen‐Gang Wang   +7 more
doaj   +1 more source

High‐Frequency Ultrasound for Detecting Periodontal Inflammation: A Preclinical Diagnostic Accuracy Study

Journal of Periodontal Research, EarlyView.
This preclinical porcine study evaluated the accuracy of ultrasound (US) for estimating dimensions of inflamed periodontium. Seven periodontal parameters were measured and compared between US, cone‐beam computed tomography (CBCT), and histology. US has excellent/good agreement with histology in estimating bone level/thickness, soft tissue height ...
Ankita Samal, Jad Majzoub, Amanda Rodriguez Betancourt, Liana Webber, John Mazzocco, Hom‐Lay Wang, Rogerio Castilho, J. Christopher Fenno, Hsun‐Liang Chan, Oliver D. Kripfgans   +9 more
wiley   +1 more source

PorA of the Type IX Secretion Is a Ligand of the PorXY Two‐Component Regulatory System in Porphyromonas gingivalis

Molecular Microbiology, EarlyView.
Porphyromonas gingivalis exports several virulent proteins, including gingipain proteinases, via the type 9 secretion system. Expression of several T9SS component proteins is regulated by the PorA‐PorY‐PoX‐SigP signaling cascade. This study presents a novel role of PorA in the signaling cascade.
Momoko Ito, Hideharu Yukitake, Paul D. Veith, Dhana G. Gorasia, Takashi Tominaga, Yuko Sasaki, Eric C. Reynolds, Koji Nakayama, Mariko Naito, Mikio Shoji   +9 more
wiley   +1 more source

Converting Blastocrithidia Nonstop, a Trypanosomatid With Non‐Canonical Genetic Code, Into a Genetically‐Tractable Model

Molecular Microbiology, EarlyView.
Blastocrithidia represents a very small group of species, in which all 3 stop codons are reassigned to encode amino acids with only one of them serving a dual role of a sense and a stop codon simultaneously. Here we demonstrated for the first time that B. nonstop can be genetically modified.
Arnau Galan, Natalya Kraeva, Kristína Záhonová, Anzhelika Butenko, Alexei Yu Kostygov, Zdeněk Paris, Jiří Pergner, Claretta Bianchi, Fadel Fakih, Andreu Saura, Julius Lukeš, Vyacheslav Yurchenko   +11 more
wiley   +1 more source

RESPIRATORY SYSTEMS IN THE HEMIN-REQUIRING HAEMOPHILUS SPECIES [PDF]

, 1963
David C. White
openalex   +1 more source

Resolving the effects of albumin glycation using the quartz crystal microbalance

MATEC Web of Conferences, 2013
Both lysine and arginine residues are particularly important at receptor sites for binding anionic ligands. These receptor sites may become compromised via non-enzymatic glycation.
Heller G.T., Zwang T.J., Sazinsky M.H., Johal M.S.   +3 more
doaj   +1 more source

Genome‐Wide Analysis of DtxR and HrrA Regulons Reveals Novel Targets and a High Level of Interconnectivity Between Iron and Heme Regulatory Networks in Corynebacterium glutamicum

Molecular Microbiology, EarlyView.
Iron is essential for life, yet excessive levels can quickly lead to cellular damage via oxidative stress, underscoring the need for global regulators of iron and heme homeostasis. In this study, we present a genome‐wide analysis of the binding patterns of DtxR and HrrA in Corynebacterium glutamicum.
Aileen Krüger, Ulrike Weber, Julia Frunzke   +2 more
wiley   +1 more source

In Vitro Assessment of Salivary Pellicle Disruption and Biofilm Removal on Titanium: Exploring the Role of Surface Hydrophobicity in Chemical Disinfection

Clinical and Experimental Dental Research, Volume 11, Issue 3, June 2025.
ABSTRACT Objectives Peri‐implantitis is mostly caused by a pathological biofilm that forms through complex processes, initiated by the formation of the salivary pellicle on implant surfaces. Understanding the nature of these pellicles and biofilm and how to remove them is important for preventing peri‐implant infections and improving the success of ...
Wenji Cai, Azam Fayezi Sisi, Mohamed‐Nur Abdallah, Ashwaq A. Al‐Hashedi, Juan Daniel Gamonal Sánchez, Enrique Bravo, Hasna H. Kunhipurayil, Rubens Albuquerque, Zahi Badran, Mariano Sanz, Faleh Tamimi   +10 more
wiley   +1 more source