As we all know, ceramic materials are inorganic, non-metallic, solid, and inert
materials. Things are made from them by the action of heat and subsequent cooling,
which may be crystalline or partly crystalline. The definition of ceramic is often
restricted to inorganic crystalline materials, as opposed to the noncrystalline glasses,
which involve several steps of the ceramic process, and their mechanical properties
behave similarly to ceramic materials.
A 6A,6A¢-dicyclohexylamine-6B,6B¢-diselenide-bis-b-cyclodextrin (6-CySeCD)
was designed and synthesized to imitate the antioxidant enzyme glutathione
peroxidase (GPX). In this novel GPX model,b-cyclodextrin provided a
hydrophobic environment for substrate binding within its cavity, and a
cyclohexylamine group was incorporated into cyclodextrin in proximity to
the catalytic selenium in order to increase the stability of the nucleophilic
Retinoid-binding proteins are indispensable for visual cycles
in both vertebrate and invertebrate retinas. These proteins
stabilize and transport hydrophobic retinoids in the hydro-philic environment of plasma and cytoplasm, and allow
regeneration of visual pigments. Here, we identified a novel
retinol-binding protein in the eye of a butterfly, Papilio
xuthus. The protein that we term Papilioretinol-binding
protein (PapilioRBP) is a major component of retinal
soluble proteins and exclusively binds 3-hydroxyretinol, and
emits fluorescencepeakingat 480 nmunder ultraviolet (UV)
Smart polymers are macromolecules capable of undergoing rapid, reversible
phase transitions from a hydrophilic to a hydrophobic microstructure. These
transitions are triggered by small shifts in the local environment, such as
slight variations in temperature, pH, ionic strength, or the concentration of
specific substances like sugars.
Smart polymers have an extensive range of applications, but this book
focuses solely on their roles within the fields of bioseparation and biomedicine.
Until recently, polymers were considered to be passive participants
within these fields.
Serum- and glucocorticoid-induced protein kinase-1 (SGK-1) plays a crit-ical role in regulation of the epithelial sodium channel, ENaC. SGK-1 also
shares significant catalytic domain homology with protein kinase B
(PKB⁄AKT-1) and is a downstream effector of antiapoptotic phosphoinos-itide 3-kinase signaling.