Cryo-EM Structure of Human Hyaluronidase PH-20.

PH-20 is a specific type of hyaluronidase that plays a critical role in the fertilization process by facilitating the initial binding of sperm to the glycoprotein layer surrounding the oocyte and subsequently breaking down hyaluronic acid polymers in the cumulus cell layer. PH-20 contains an epidermal growth factor (EGF)-like domain, which may be involved in the recognition of the glycoprotein layer in addition to the catalytic domain. Herein, we report the structure of human PH-20 determined by cryogenic electron microscopy.

Combined treatment of surgical extrusion and crown lengthening procedure for severe crown-root fracture of a growing patient: a case report.

Background: Preservation of a healthy periodontium is critical for the long-term success of restored teeth. In cases of extensive caries, tooth fracture, inadequate crown length, and increased esthetic demands, the restorative margins need to be placed apical to the gingival margin. Violation of the biological width due to dental trauma frequently appears in clinical practice.

Urazoles as Heterocyclic Directing Groups in Ru(II)-Catalyzed Annulation of N-H/C-H Bonds with Vinylene Carbonate.

The development of novel directing groups is a valuable strategy to secure the advancement of catalytic C-H functionalization. To illustrate the feasibility of urazoles as heterocyclic directing groups, we herein present the ruthenium(II)-catalyzed annulation of N-H/C-H bonds on -aryl urazoles with vinylene carbonate. This transformation provides the rapid construction of triazolocinnoline derivatives as hemiaminal and dehydrated forms.

Three-dimensional surface lattice plasmon resonance effect from plasmonic inclined nanostructures via one-step stencil lithography.

Plasmonic nanostructures allow the manipulation and confinement of optical fields on the sub-wavelength scale. The local field enhancement and environmentally sensitive resonance characteristics provided by these nanostructures are of high importance for biological and chemical sensing. Recently, surface lattice plasmon resonance (SLR) research has attracted much interest because of its superior quality factor (-factor) compared to that of localized surface plasmon resonances (LSPR), which is facilitated by resonant plasmonic mode coupling between individual nanostructures over a large area.