Synthesis and Characterization of Three-Dimensional 3d−3d and 3d−4f Heterometallic Coordination Polymers with High Thermal Stability

Using 1,2-bis(4-pyridyl)ethane (bpe) and benzene-1,3-biscarboxylic acid (H2bba) as ligands, two novel heterometallic three-dimensional coordination polymers {[Zn3Mn1.5(bpe)(bba)4(Hbba)]·bpe}n (Mn−Zn) and {[Zn2Pr(bpe)(bba)3(Hbba)]·H2O}n (Pr−Zn) were isolated under hydrothermal conditions. Both complexes are constructed via 3d−3d and 3d−4f clusters as secondary building units, respectively, which represent the first template synthesis for 3D heterometallic MOFs

Synthesis and Characterization of Three-Dimensional 3d−3d and 3d−4f Heterometallic Coordination Polymers with High Thermal Stability

Using 1,2-bis(4-pyridyl)ethane (bpe) and benzene-1,3-biscarboxylic acid (H2bba) as ligands, two novel heterometallic three-dimensional coordination polymers {[Zn3Mn1.5(bpe)(bba)4(Hbba)]·bpe}n (Mn−Zn) and {[Zn2Pr(bpe)(bba)3(Hbba)]·H2O}n (Pr−Zn) were isolated under hydrothermal conditions. Both complexes are constructed via 3d−3d and 3d−4f clusters as secondary building units, respectively, which represent the first template synthesis for 3D heterometallic MOFs

Synthesis and Characterization of Three-Dimensional 3d−3d and 3d−4f Heterometallic Coordination Polymers with High Thermal Stability

Using 1,2-bis(4-pyridyl)ethane (bpe) and benzene-1,3-biscarboxylic acid (H2bba) as ligands, two novel heterometallic three-dimensional coordination polymers {[Zn3Mn1.5(bpe)(bba)4(Hbba)]·bpe}n (Mn−Zn) and {[Zn2Pr(bpe)(bba)3(Hbba)]·H2O}n (Pr−Zn) were isolated under hydrothermal conditions. Both complexes are constructed via 3d−3d and 3d−4f clusters as secondary building units, respectively, which represent the first template synthesis for 3D heterometallic MOFs

Data_Sheet_1_In silico Analysis of Peptide-Based Biomarkers for the Diagnosis and Prevention of Latent Tuberculosis Infection.zip

BackgroundLatent tuberculosis infection (LTBI) is the primary source of active tuberculosis (ATB), but there are no specific methods for diagnosing and preventing LTBI.MethodsDominant T and B cell epitopes predicted from five antigens related to LTBI and Mycobacterium tuberculosis region of difference (LTBI-RD) were used to construct a novel polypeptide molecule (PPM). Then, the physicochemical properties, secondary structure, tertiary structure of the PPM, and its binding ability to toll-like receptor 2 (TLR2) and TLR4 were analyzed by bioinformatics tools. Finally, immune stimulation and expression optimization of the PPM were carried out.ResultsFour helper T lymphocytes (HTL) epitopes, five cytotoxic T lymphocytes (CTL) epitopes, and three B cell epitopes were predicted and screened from five LTBI-RD related antigens. These epitopes were connected in series with linkers and adjuvants to construct a novel PPM termed C543P. The results indicated that antigenicity and immunogenicity scores of the C543P candidate were 0.936399 and 1.36469, respectively. The structural analysis results showed that the C543P candidate had good stability. Its secondary structure contained 43.6% α-helix, the Z-score after tertiary structure optimization was −7.9, and the Ramachandran diagram showed that 88.77% amino acid residues of the C543P candidate were in the allowable region. Furthermore, the C543P candidate showed an excellent affinity to TLR2 (−1091.7kcal/mol) and TLR4 (−1102.7kcal/mol). In addition, we also analyzed the immunological characteristics of the C543P candidate. Immune stimulation prediction showed that the C543P candidate could effectively activate T and B lymphocytes and produce high levels of Th1 cytokines such as IFN-γ and IL-2.ConclusionWe constructed a novel PPM with acceptable antigenicity, immunogenicity, stability, and ability to induce robust immune responses. This study provides a new diagnostic biomarker or peptides-based vaccine for LTBI diagnosis and prevention.</p

A Local Desymmetrization Approach to Piperidinyl Acetic Acid γ‑Secretase Modulators

A desymmetrization-based approach for the synthesis of piperidinyl acetic acid γ-secretase modulators has been developed. The synthetic sequence features the use of N-tert-butanesulfinyl imine reduction and a diastereoselective lactam formation to set up the chiral centers. The synthetic utility is demonstrated by the concise asymmetric synthesis of γ-secretase modulator GSM-1

Noncontact Method for Calibration of Lateral Forces in Scanning Force Microscopy

This paper describes a noncontact calibration procedure for lateral force microscopy in air and liquids. The procedure is based on the observation that the sensitivity of a force microscope may be calibrated using the raw thermal noise spectrum of the cantilever and its known spring constant, which can be found from the same uncalibrated thermal noise spectrum using Sader’s method (Rev. Sci. Instrum. 1999, 70, 3967−3969). In addition to the power spectrum of the cantilever thermal noise, this noncontact calibration method only requires knowledge of the plan view dimensions of the cantilever that could be measured using an optical microscope. This method is suitable for in situ force calibration even in viscous fluids through a two-step calibration procedure, where the cantilever thermal spectra are captured both in air and in the desired liquid. The lateral calibration performed with the thermal noise technique agrees well with sensitivity values obtained by the wedge calibration procedure. The approach examined in this paper allows for complete calibration of normal and lateral forces without contacting the surface, eliminating the possibility for any tip damage or contamination during calibration

Compilation and evaluation of diffusivities from Compilation and evaluation of gas phase diffusion coefficients of halogenated organic compounds

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Conversion between transactional database and bit-vectors.

<p>Conversion between transactional database and bit-vectors.</p

Total Synthesis of (+)-Gilbertine: A Cyclopentanone-Based Approach

From methyl jasmonate, the concise asymmetric total synthesis of uleine alkaloid gilbertine was reported. The synthesis demonstrated the power of a cyclopentanone-based approach involving the coupling of 2-aminobenzaldehyde and diazo-cyclopentanone for the rapid assembly of the hydrocarbazole natural product

Table_1_Comprehensive Analysis of Circular RNAs to Decipher the Potential Roles in Blind-Side Hypermelanosis in Chinese Tongue Sole (Cynoglossus semilaevis).xlsx

Blind-side hypermelanosis is an emerging concern across the flatfish aquaculture industry including Chinese tongue sole (Cynoglossus semilaevis). Circular RNAs (circRNAs) as endogenous non-coding RNAs have been acknowledged to play important roles in various biological processes. However, the underlying regulatory mechanisms of circRNAs involved in flatfish blind-side hypermelanosis remain unclear. In this study, to profile the circRNA expression pattern and circRNA-microRNA-messenger RNA (mRNA) network, high-throughput sequencing was performed by using blind-side normal and hypermelanotic skins of tongue sole. A total of 73 differentially expressed circRNAs were identified, and the competing endogenous RNA (ceRNA) network was constructed. Furthermore, circRNA host genes and mRNAs involved in ceRNA network were subjected to Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes enrichment analyses. Several GO terms and pathways of biological significance were identified and well addressed the generation of blind-side hypermelanosis to some extent. These interesting results extend the understanding of the functional profile of circRNAs and yield valuable insights into the molecular regulatory mechanisms of hypermelanosis in flatfish.</p