Metamaterials are specifically engineered to produce electromagnetic properties that not available in natural materials. Multiband metamaterial (MM) absorbers achieve great research interest due their applications sensing, filtering, and stealth. These mostly made of multilayered complex geometrical structures. In this work, a single-layered cartwheel-shaped (CWS), polarization-insensitive MM a...

Singlet microtubules and structures that have the morphology and dimensions of the basal body cartwheel complex self-assemble in extracts derived from Tetrahymena basal bodies.

Cartwheel cells are glycinergic auditory interneurons which fire Na(+)- and Ca(2+)-dependent spike bursts, termed complex spikes, and which synapse on both principal cells and one another. The reversal potential for glycine (E(gly)) can be hyperpolarizing or depolarizing in cartwheel cells, and many cells are even excited by glycine. We explored the role of spike activity in determining E(gly) ...

The purpose of this study was to reveal synaptic plasticity within the dorsal cochlear nucleus (DCN) as a result of noise trauma and to determine whether effective antioxidant protection to the cochlea can also impact plasticity changes in the DCN. Expression of synapse activity markers (synaptophysin and precerebellin) and ultrastructure of synapses were examined in the DCN of chinchilla 10 da...

Cilia and flagella are structurally and functionally conserved organelles present in basal as well as higher eukaryotes. The assembly of cilia requires a microtubule based scaffold called a basal body. The ninefold symmetry characteristic of basal bodies and the structurally similar centriole is organized around a hub and spoke structure termed the cartwheel. To date, SAS-6 is one of the two cl...

Understanding gene regulation in detail is a goal of both developmental biology and microbial physiology, yet computational tools for investigating the function of non-coding sequence remain relatively immature. Simple, intuitive, and powerful tools that allow individual bench biologists to explore regulatory function in genomic sequence can dramatically increase experimental productivity by bo...

Sas-6 and Ana2/STIL proteins are required for centriole duplication and the homo-oligomerisation properties of Sas-6 help establish the ninefold symmetry of the central cartwheel that initiates centriole assembly. Ana2/STIL proteins are poorly conserved, but they all contain a predicted Central Coiled-Coil Domain (CCCD). Here we show that the Drosophila Ana2 CCCD forms a tetramer, and we solve ...

The fine structure of mitosis in vegetative cells of the marine protist Labyrinthida was found to involve formation of two approximately spherical, electron-dense aggregates (termed protocentrioles) 200-300 nm in diameter. Spindle microtubules were directly attached to the structures. The aggregates contained centrally located cartwheel structures but no microtubular elements in the form of a c...

We report the Chandra/ACIS-S detection of more than 20 ultraluminous X-ray sources (ULXs, L0.5−10keV > ∼3 × 10 ergs s) in the Cartwheel collisional ring galaxy system, of which over a dozen are located in the outer active star-forming ring. A remarkable hyperluminous X-ray source (HLX, L0.5−10keV > ∼10 ergs s assuming isotropic radiation), which dominates the X-ray emission from the Cartwheel r...