Results 31 to 40 of about 17,772 (214)

Quorum Sensing Activity of Mesorhizobium sp. F7 Isolated from Potable Water

The Scientific World Journal, 2014
We isolated a bacterial isolate (F7) from potable water. The strain was identified as Mesorhizobium sp. by 16S rDNA gene phylogenetic analysis and screened for N-acyl homoserine lactone (AHL) production by an AHL biosensor. The AHL profile of the isolate
Pei-Ling Yong, Kok-Gan Chan
doaj   +1 more source

Quorum Sensing Activity of Enterobacter asburiae Isolated from Lettuce Leaves

Sensors, 2013
Bacterial communication or quorum sensing (QS) is achieved via sensing of QS signaling molecules consisting of oligopeptides in Gram-positive bacteria and N-acyl homoserine lactones (AHL) in most Gram-negative bacteria.
Kok-Gan Chan, Jian Woon Chen, Wai-Fong Yin, Yin Yin Lau, Joanita Sulaiman   +4 more
doaj   +1 more source

Homoserine and quorum‐sensing acyl homoserine lactones as alternative sources of threonine: a potential role for homoserine kinase in insect‐stage Trypanosoma brucei

Molecular Microbiology, 2014
SummaryDe novo synthesis of threonine from aspartate occurs via the β‐aspartyl phosphate pathway in plants, bacteria and fungi. However, the Trypanosoma brucei genome encodes only the last two steps in this pathway: homoserine kinase (HSK) and threonine synthase.
Ong, Han B., Lee, Wai S., Patterson, Stephen, Wyllie, Susan, Fairlamb, Alan H.   +4 more
openaire   +4 more sources

Durable Bio‐Based Nanocomposite Coating on Urinary Catheters Prevents Early‐Stage CAUTI‐Associated Pathogenicity

Advanced Materials Interfaces, EarlyView.
A stable bio‐based nanocomposite coating for urinary catheters is developed using a simple, environmentally‐friendly sonochemical process. The coating, integrating antimicrobial, antibiofilm, and antioxidant properties, effectively tackled multiple early‐stage pathogenic factors associated with catheter‐associated urinary tract infections.
Antonio Puertas‐Segura, Kristina Ivanova, Leonardo Martín Pérez, Bzazou El Ouazzani Zine El Abidine, Aleksandra Ivanova, Barış Gökalsın, Gianluca Ciardelli, Tzanko Tzanov   +7 more
wiley   +1 more source

Late-Stage Amination of Peptides on the Solid Phase. [PDF]

Chemistry
The introduction of amines into peptides via an on‐resin iodination‐substitution reaction sequence provides access to a wide variety of modifications, including amine‐based metal ligands. Primary, secondary, and aromatic amines, as well as heteroaromatic N‐nucleophiles, have been successfully incorporated into the reaction sequence.
Brinkhofer J, Werner M, Kokollari A, Pan SY, Klein C, Pham TL, Thomas F.   +6 more
europepmc   +2 more sources

The crystal structure of homoserine dehydrogenase complexed withl-homoserine and NADPH in a closed form

The Journal of Biochemistry, 2018
Homoserine dehydrogenase from Thermus thermophilus (TtHSD) is a key enzyme in the aspartate pathway that catalyses the reversible conversion of l-aspartate-β-semialdehyde to l-homoserine (l-Hse) with NAD(P)H. We determined the crystal structures of unliganded TtHSD, TtHSD complexed with l-Hse and NADPH, and Lys99Ala and Lys195Ala mutant TtHSDs, which ...
Shota Akai, Taiki Sawai, Hiroko Ikushiro, Takato Yano, Ikuko Miyahara, Nobuo Kamiya   +5 more
openaire   +2 more sources

JA‐Mediated Regulation of Amino Acid Homeostasis Adjusts Metabolic Flux and Enhances Spider Mite Tolerance via the SlJAZ8‐SlWRKY57‐SlAVT6s Module in Tomato

Advanced Science, EarlyView.
This study elucidates a novel SlJAZ8‐SlWRKY57‐SlAVT6A/SlAVT6B module that effectively channels metabolic flux from primary to secondary metabolism, impacting plant growth, development, and resistance. Two novel vacuolar amino acid exporters, SlAVT6A and SlAVT6B, fine‐tunes trichomes, terpenes, and gibberellins, bolstering spider mite resistance.
Yingchen Hao, Xiaolong Wang, Langchen Guo, Lijun Xiang, Enxi Luo, Peng Cao, Penghui Liu, Yue Zhong, Chun Li, Jun Lai, Jun Yang, Shouchuang Wang   +11 more
wiley   +1 more source

Tandem Mass Spectrometry Detection of Quorum Sensing Activity in Multidrug Resistant Clinical Isolate Acinetobacter baumannii

The Scientific World Journal, 2014
Many Proteobacteria communicate via production followed by response of quorum sensing molecules, namely, N-acyl homoserine lactones (AHLs). These molecules consist of a lactone moiety with N-acyl side chain with various chain lengths and degrees of ...
Kok-Gan Chan, Huey Jia Cheng, Jian Woon Chen, Wai-Fong Yin, Yun Fong Ngeow   +4 more
doaj   +1 more source

The Role of Transamination in the Synthesis of Homoserine in Peas [PDF]

Plant Physiology, 1986
Incubation of intact pea plants (Pisum sativum), or detached shoots, in continuous light caused a substantial increase (up to 4-fold in 2 days) in levels of homoserine. Amino acids supplied to leaves in the transpiration stream enhanced the accumulation, with glutamate, aspartate, and asparagine causing similar enhancement.
Kenneth W. Joy, Chander Prabha
openaire   +3 more sources

A hepatoprotective experiment on taro vegetable (Colocasia esculenta (L.) Schott) flower employing animal models by mitigating oxidative stress

Animal Models and Experimental Medicine, EarlyView.
The antioxidant efficacy of Colocasia esculenta flower’s methanolic extract was assessed using 2,2′‐azino‐bis‐(3‐ethylbenzothiazoline‐6‐sulfonic) (ABTS) and 2,2‐diphenyl‐1‐picrylhydrazyl (DPPH) scavenging assay. The hepatoprotective effect was investigated by assessing liver injury indicators (amino transferase [ALT], aspartate amino transferase [AST],
Mahathir Mohammad, Fahmida Tasnim Richi, Rabiul Hossain, Md. Arafat, Pair Ahmed Jiko, Nazim Uddin Emon, Sayed Al Hossain Rabbi, Tirtha Khastagir, Md. Hemayet Hossain, Safaet Alam   +9 more
wiley   +1 more source