منابع مشابه
Photoreceptor Structures
The eyes of three eye mutants of Drosophila melanogaster were fixed and thin sections studied for its structural detail in the electron microscope. Each ommatidium was found to have seven retinula cells with an equal number of rhabdomeres (visual units). The rhabdomeres average 1.2 micro in diameter and 60 micro in length. Each rhabdomere consists of osmium-fixed dense bands averaging 120 A in ...
متن کاملPhotoreceptor Structures. the Retinal Cells of the Cockroach Eye
The retinal structures of the compound eyes of insects are being investigated as par t of a comparative study of the s tructure and biochemistry of visual organs (1 5). T he compound eye of the insect is composed of numerous ommatidia , each of which consists of f rom four to eight re t inula cells. Each re t inula cell contains a differentiated structure, the rhabdomere , a photoreceptor . The...
متن کاملCrystal structures of the AppA BLUF domain photoreceptor provide insights into blue light-mediated signal transduction.
Proteins containing a sensor of blue light using FAD (BLUF) domain control diverse cellular processes, such as gene expression, nucleotide metabolism and motility, by relaying blue light signals to distinct output units. Despite its crucial and widespread functions, the mechanism of BLUF signal transduction has remained elusive. We determined crystal structures of the dark-adapted state and of ...
متن کاملPhotoreceptor Biotechnology
Plant photoreceptors influence or control almost all aspects of plant metabolism, growth and development. Only the extent and timing of this control is variable (see other chapters in this volume). Many agriculturally relevant traits are either heavily influenced or completely controlled by photoreceptors. These include seed germination, circadian timing, seedling architecture, bud dormancy, le...
متن کاملPhotoreceptor engineering
Sensory photoreceptors not only control diverse adaptive responses in Nature, but as light-regulated actuators they also provide the foundation for optogenetics, the non-invasive and spatiotemporally precise manipulation of cellular events by light. Novel photoreceptors have been engineered that establish control by light over manifold biological processes previously inaccessible to optogenetic...
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ژورنال
عنوان ژورنال: The Journal of Biophysical and Biochemical Cytology
سال: 1957
ISSN: 1540-8140,0021-9525
DOI: 10.1083/jcb.3.3.441