In the first chapter, studies on substrate recognition and enzymatic activity of GGDEF domains are presented. Many proteins containing GGDEF domains are diguanylate cyclases (DGCs, EC 2.7.7.65), enzymes that catalyze the conversion of 2 GTP molecules into the second messenger c-di-GMP in prokaryotes. Thi...
Análisis de Secuencia,
Bacillus pumilus/clasificación,
Caulobacter crescentus/química,
Cianuros/efectos adversos,
Cinética,
Clonación de Organismos/instrumentación,
Concentración de Iones de Hidrógeno,
Especificidad por Sustrato,
Estilo de Vida,
Genoma Bacteriano,
Aislamiento de Pacientes,
Mutación Puntual
La contaminación por plásticos petroquímicos es una grave amenaza para el medio ambiente que requiere im-plementar alternativas como los bioplásticos para lograr un desarrollo sostenible. Los polihidroxialcanoatos (PHA) son polímeros utilizados para la producción de plásticos biodegradables y que ...
Plásticos Biodegradables/química,
Polihidroxialcanoatos/análisis,
Alcaligenes faecalis/química,
Pseudomonas/química,
Residuos Industriales/efectos adversos,
Staphylococcus capitis,
Fermentación,
Exiguobacterium/química,
Halomonas,
Bacillus megaterium/química,
Guatemala,
Laguna Costera
Nos últimos anos, houve um aumento na frequência dos casos de tumores de cabeça e pescoço apesar da diminuição do consumo do tabaco e álcool, e isso tem sido atribuído, em parte, à infecção pelo Papilomavírus Humano HPV. Por apresentar baixa sobrevida em 5 anos e ter alta morbidade, tem se bu...
Ji, Yanzhao;
Zhou, Weidong;
Tan, Wei;
Chen, Zewei;
Lu, Hanqi;
You, Yanting;
Tian, Chunyang;
Zhou, Xinghong;
Zhou, Lin;
Luo, Ren;
Zhao, Xiaoshan.
Purpose:
To evaluate the protective effect of Cuscuta chinensis Lam. polysaccharides (PCCL) on 5-fluorouracil-(5-FU)-induced intestinal mucositis (IM) in mice.
Methods:
PCCL was orally administered at a dose of 20 mg·kg–1 for 7 days and its protective effect on 5-FU-induced IM (5-FU, 50 mg·kg–1 fo...
Meng, Di;
Yang, Yinhe;
Li, Longxing;
Qian, Xiaoli;
Wang, Qi;
Xu, Jinglei;
Zhao, Hairong;
Liu, Heng;
Xiao, Huai;
Ding, Zhongtao.
Purpose:
To explore the potential immunomodulatory effects of total extract and different polar parts from Blaps rynchopetera Fairmaire.
Methods:
Phagocytic activity was evaluated by neutral red assay, and the effect of the immune function was investigated by normal and immunocompromised mice models.
R...
Seed germination is a complex process controlled by many factors, in which physical and biochemical mechanisms are involved and the mobilization of reserves is crucial for this process to occur. Although, seed reserve mobilization is usually thought to be a post-germination process, seed reserve proteins...
Crop residues decomposition are controlled by chemical tissue components. This study evaluated changes on plant tissue components, separated by the Van Soest partitioning method, during cover crop decomposition. The Van Soest soluble fraction was the first to be released from the crop residues, followed ...
The present study investigated the chemical profiles and evaluated the inhibitory effect against 5-Lipoxygenase (5-Lox) activity for extracts of ginger rhizome, callus, and callus treated with the elicitors; yeast extract (100, 300 and 500 mg/L), glycine (100, 200 and 300 mg/L) and salicylic acid (100 an...
A comparative study was perfomed with conventional and ultrasound assisted extraction on tomato processing waste. Ultrasound extraction exhibited slightly higher phenolic and flavonoids content, as well as higher ABTS + radical scavenging capacity (4.63 mg GAE.g-1, 0.96 mg RUE.g-1 and 27.90 μmol TE.g -1...
This research valorized Pachira aquatica Aubl.’s fruit shells (PAS) through its energetic characterization and flash pyrolysis for biofuels or chemicals production. The characterization was performed through proximate and ultimate analysis, bulk density, higher heating value (HHV), hemicellulose, cellu...
