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Lipase from Rhizomucor miehei (RML) is a promising biocatalyst used in food industry, fine chemicals, and biodiesel production. Yeast surface display allows direct application of lipase in form of whole-cell biocatalyst, avoiding purification and immobilization process, but the protease of the host cell may affect the activity of displayed lipase. https://www.selleckchem.com/products/dansylcadaverine-monodansyl-cadaverine.html Herein, we used the protease-deficient Pichia pastoris, PichiaPink™ as host to display RML efficiently. RML gene, GCW21 gene and α-factor gene were co-cloned into plasmid pPink LC/HC and transformed into protease-deficient P. pastoris. After inducution expression for 96 h, the lipase activity of displayed RML reached 121.72 U/g in proteinase-A-deficient P. pastoris harboring high-copy plasmid, which exhibited 46.7% higher than recombinant P. pastoris without protease defect. Displayed RML occurred the maximum activity at pH 8.0 and 45 °C and the optimal substrate was p-nitrophenyl octanoate. Metal ions Li+, Na+, K+, and Mg2+ of 1-10 mM had activation towards displayed RML. Displayed RML was effectively improved in PichiaPink™ protease-deficient system, which may promote the further research and development for the industrial application of RML.Breast cancer (BRCA) is the most common malignant tumor in women. The estrogen receptor-positive (ER+) subtype accounts for ∼70% of BRCA cases. Estrogen is a crucial hormone that directly stimulates the growth and development of mammary glands. Recent studies revealed that, as an estrogen cofactor, ATP has an important role in determining the action of estrogen by mediating phase separation. NUDT5 has been recognized as a key factor for ATP production in the nucleus of BRCA cells and, therefore, could represent a novel drug target for ER+ BRCA. Based on a survival analysis of patients with BRCA documented in The Cancer Genome Atlas (TGCA) database, we show that NUDT5 is also a potential prognostic biomarker for ER+ BRCA. To investigate the etiology, progression, and treatment of precocious puberty in 7- to 8-year-old girls with breast development. Additionally, we evaluated the value of diagnostic tests in differentiating rapidly progressive precocious puberty (RP-PP) and slowly progressive precocious puberty (SP-PP) in these girls. Ambispective cohort study. Single-center, pediatric endocrinology unit. Girls with breast development between the ages of 7 and 8years and assessed between July 2016 and July2018. Collected of clinical data and followed-up for 2 to 3years. Girls were divided into RP-PP and SP-PP groups. Described the etiology, rate of progression of puberty, and proportion intervened and compared the results of auxiliary examinations between the groups. A total of 212 girls were enrolled, of which 211 (99.53%) were diagnosed with central precocious puberty (CPP) and 1 with peripheral precocious puberty (PPP). Hypophysis magnetic resonance imaging revealed that none had pathological brain lesions requiring surgical intervention. A total of 95 girls (44.81%) developed RP-PP, and 117 girls (55.19%) developed SP-PP. A total of 31 girls (14.62%) with RP-PP received treatment due to deteriorated predicting adult height. As compared with the SP-PP group, the RP-PP group showed more advanced bone age (BA), a higher level of basal luteinizing hormone (LH), and larger ovarian volume and uterine volumes. Receiver operating characteristic analyses revealed that BA was the best at identifying girls with RP-PP. The majority of girls with breast development between the ages of 7-8years do not need treatment. BA is a useful preliminary test for identifying girls with RP-PP who are more likely to require treatment. The majority of girls with breast development between the ages of 7-8 years do not need treatment. BA is a useful preliminary test for identifying girls with RP-PP who are more likely to require treatment. Provider misconceptions regarding intrauterine device (IUD) safety for adolescents and young women can unnecessarily limit contraceptive options offered; we sought to evaluate rates of Neisseria gonorrhoeae or Chlamydia trachomatis (GC/CT) diagnoses among young women who adopted IUDs. Secondary analysis of a cluster-randomized provider educational trial. Forty US-based reproductive health centers. We followed 1350 participants for 12months aged 18-25years who sought contraceptive care. The parent study assessed the effect of provider training on evidence-based contraceptive counseling. We assessed incidence of GC/CT diagnoses according to IUD use and sexually transmitted infection risk factors using Cox regression modeling and generalized estimating equations. Two hundred four participants had GC/CT history at baseline; 103 received a new GC/CT diagnosis over the 12-month follow-up period. IUDs were initiated by 194 participants. Incidence of GC/CT diagnosis was 10.0 per 100 person-years during .To assess how B cell phenotype analysis correlates with antigen responses in patients with class switch recombination defects (CSRD) we quantified memory B cells by flow-cytometry and immunized CSRD patients with the neoantigen bacteriophage phiX174 (phage). CSRD patients showed uniformly absent or markedly reduced switched memory B cells (IgM-IgD-CD27+). CD40L patients had reduced CD27+ memory B cells (both non-switched and switched). In NEMO patients, results varied depending on the IKKγ gene variant. Three of four AID patients had normal percentages of CD27+ memory B cells while CD27+IgM-IgD- switched memory B cells were markedly reduced in all AID patients. Antibody response to phage was remarkably decreased with lack of memory amplification and class-switching in immunized CD40L, UNG deficient, and NEMO patients. Distinct B-cell phenotype pattern correlated with abnormal antibody responses to a T-cell dependent neoantigen, representing a powerful tool to identify CSRD patients.Opportunistic pathogen Pseudomonas aeruginosa uses a variety of virulence factors to cause acute and chronic infections. We previously found that alternate DNA polymerase gene polB inhibits P. aeruginosa pyocyanin production. We investigated whether polB also affects T3SS expression. polB overexpression significantly reduced T3SS transcription and repressed translation of the master T3SS regulator ExsA, while not affecting exsA mRNA transcript abundance. Further, polB does not act through previously described genetic pathways that post-transcriptionally regulate ExsA. Our results show a novel T3SS regulatory component which may lead to development of future drugs to target this mechanism.
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