The light-harvesting core antenna (LH1) and the reaction centre (RC) of purple photosynthetic bacteria form a supramolecular complex (LH1-RC) to use sunlight energy in a highly efficient manner. Here we report the first near-atomic structure, to our knowledge, of a LH1-RC complex, namely that of a Ca(2+)-bound complex from Thermochromatium tepidum, which… (More)
The guinea pig model of cigarette smoke (CS)-induced lung injury is known to exhibit many pathophysiological similarities to chronic obstructive pulmonary disease (COPD), but the expression profiles of inflammatory mediators in the lung are poorly understood. Quantitative real-time RT-PCR was used in this study to investigate the pulmonary expression… (More)
The decline in olfaction with age is well documented in histological, psychological, and electroencephalographical studies. However, there are few electrophysiological studies on changes in the sensitivity of the peripheral olfactory cells with age. We evaluated the behavior, the amplitude of electro-olfactogram (EOG), and the thickness of the olfactory… (More)
The purpose of this study was to know what quantity and quality of illuminance during the waking period is selected by subjects and to discuss these in terms of circadian rhythm of core temperature. Five females served as subjects. They were instructed to choose the intensity and color temperature of the illumination they preferred every 15 min during… (More)
Scientists in many fields have studied olfaction in dogs, but no simple method exists to study this function. The olfactory ability of dogs is used in many fields. However, the owners of the dogs have a frustrating experience because there is not an easy method to measure olfactory function. The purpose of this study was to examine the characteristics of… (More)
Although avian olfaction has been studied behaviorally and anatomically, few electrophysiological (EEG) studies exist. The purpose of this study is to examine the characteristics of the olfactory function of the fowl with EEG recording. We found that slow waves decreased and the rapid waves increased in response to a variety of odors.
The fine structures of proteins, such as the positions of hydrogen atoms, distributions of valence electrons and orientations of bound waters, are critical factors for determining the dynamic and chemical properties of proteins. Such information cannot be obtained by conventional protein X-ray analyses at 3.0-1.5 Å resolution, in which amino acids are… (More)
Mammalian microsomal cytochrome b5 has multiple electron-transfer partners that function in various electron-transfer reactions. Four crystal structures of the solubilized haem-binding domain of cytochrome b5 from porcine liver were determined at sub-angstrom resolution (0.76-0.95 Å) in two crystal forms for both the oxidized and reduced states. The… (More)