The gene encoding chitinase from Streptomyces sp. (strain J-13-3) was cloned and its nucleotide structure was analyzed. The chitinase consisted of 298 amino acids containing a signal peptides (29 amino acids) and a mature protein (269 amino acids), and had calculated molecular mass of 31,081Da. The calculated molecular mass (28,229Da) of the mature protein was almost same as that of the native ...

Introduction: This study aims at examining the difference of pharyngeal airways in patients with different occlusion postures, hoping to im‌prove diagnostic methods and provide a stable treatment plan for orthodontic patients. Materials and Methods: The data were ga-thered through CBCT radiographies of patients from a specialized center for radiology. In each occlusion group according to the p...

Two CHI genes from Chitinolyticbacter meiyuanensis SYBC-H1 encoding chitinases were identified and their protein 3D structures were predicted. According to the amino acid sequence alignment, CHI1 gene encoding 166 aa had a structural domain similar to the GH18 type II chitinase, and CHI2 gene encoding 383 aa had the same catalytic domain as the glycoside hydrolase family 19 chitinase. In this s...

background and aims: the indiscriminate use of antibiotics can lead to antibiotic resistance in the treatment of infections caused by bacteria such as pseudomonas aeruginosa. the presence of integrons in pseudomonas is clearly associated with multidrug resistances. therefore, this study aimed at tracking class i, ii and iii integrons of antibiotic-resistant isolates of pseudomonas aeruginosa th...

statement of the problem: achieving a normal soft tissue facial profile is considered to be the main concern of class iii patients and the goal of most class iii treatments. purpose: the purpose of this study was to investigate the effects of facemask treatment on profile with photogrammetric method. materials and method: before (t0) and after (t1) treatment photograms of 40 class iii patients ...

Objectives In borderline class III malocclusions, the patients can be successfully treated by the orthodontic or surgical modalities, however; there is no consensus about the method with the best results regarding functional and esthetic parameters. The present study aimed to assess the treatment plans provided by academic and non-academic surgeons regarding borderline class III patients. Meth...

Streptomyces sp. SJKP9 was isolated from the shore soil sample of Dhanushkodi, TN and evaluated for chitinase production. Maximum chitinase production was observed on day 8 of incubation while, pH 6 and temperature 30°C were found to be optimum. Culture medium with colloidal chitin was found to be suitable for chitinase production. Sucrose and yeast extract, when used as additional carbon and n...

A lectin has been identified in black locust (Robinia pseudoacacia) bark that shares approximately 50% sequence identity with plant class V chitinases but is essentially devoid of chitinase activity. Specificity studies indicated that the black locust chitinase-related agglutinin (RobpsCRA) preferentially binds to high-mannose N-glycans comprising the proximal pentasaccharide core structure. Cl...