Results 271 to 280 of about 606,927 (312)
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Modulation of Cellular Signals by Calpain
Annals of the New York Academy of Sciences, 1992Calpain, an inactive proenzyme, translocates from the cytosol to the membrane upon binding calcium, and is activated at the membrane in the presence of calcium and PIP2. Activated calpain is very unstable and presumably used only once. Thus the primary targets of calpain are considered to be membrane or membrane-associated proteins.
K, Suzuki, T C, Saido, S, Hirai
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Glucocorticoid modulation of cytokine signaling
Tissue Antigens, 2006Abstract Cytokine signaling is essential for intercellular communication and affects cell proliferation, differentiation, and survival. In the immune system, cytokines coordinate the activities of many cell types ultimately leading to both innate and adaptive immune responses.
I, Rogatsky, L B, Ivashkiv
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Modulators of the hedgehog signaling pathway
Bioorganic & Medicinal Chemistry, 2010Since its discovery by C. Nüsslein-Volhard and E. F. Wieschaus, hedgehog (hh) signaling has come a long way. Today it is regarded as a key regulator in embryogenesis where it governs processes like cell proliferation, differentiation, and tissue patterning. Furthermore, in adults it is involved in the maintenance of stem cells, and in tissue repair and
Philipp, Heretsch +2 more
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Delta Modulation of Data Signals
IEEE Transactions on Communications, 1974This paper is an analytical study to determine the performance of single-integration delta-modulation (\DeltaM) encoders with inputs which are various voice-band data signals. Signal-to-quantizing noise ratios S/N are calculated for \DeltaM bit rates from 16 to 96 K bits/s.
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Modulation of BMP signalling by integrins
Biochemical Society Transactions, 2016The bone morphogenetic protein (BMP) pathway is a major conserved signalling pathway with diverse roles in development and homeostasis. Given that cells exist in three-dimensional environments, one important area is to understand how the BMP pathway operates within such complex cellular environments.
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A micro signal processing module
ACM SIGMICRO Newsletter, 1978A small, high-speed programmable digital signal processing module utilizing bit slice microprocessor techniques is described. The processor is designed to provide low-cost, modular implementations of digital signal processing tasks, such as fast Fourier transforms, data compression, digital filtering, etc.
David M. Bell, Larry E. Hand
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Pitch of Frequency-Modulated Signals
The Journal of the Acoustical Society of America, 1964This study deals with measurements carried out to determine the pitch of a quasi frequency-modulated signal consisting of only three frequency components. Such a signal was generated by modulating a sinusoid of center frequency f with a second sinusoid of frequency g and shifting the phase of the center-frequency component over 90 deg.
Ritsma, R.J., Engel, F.L.
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The ASICs: Signaling molecules? Modulators?
Trends in Neurosciences, 2003Acid-sensing ionic channels (ASICs) are almost ubiquitous in the mammalian nervous system, both at the periphery and in the brain. Strong evidence for the physiological function of these molecules has come from recent knockout experiments. Now it is clear that ASICs are important for certain sensory modalities (mechanoreception and nociception) at the ...
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Modulation of TRAIL Signaling Complex
2004Publisher Summary TRAIL is a recently identified member of the tumor necrosis factor (TNF) family, which consists of 281 (human TRAIL) or 291 (murine TRAIL) amino acids. The human TRAIL gene is located on chromosome 3 at position 3q26 and the human TRAIL protein has a calculated molecular mass of 32.5 kDa and isoelectric point of 7.63.
Chunhai, Hao +3 more
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