Molecular Regulation of Muscle Growth in Crustacea
| Autor: | A.J. El Haj, N. M. Whiteley |
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| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Journal of the Marine Biological Association of the United Kingdom. 77:95-106 |
| ISSN: | 1469-7769 0025-3154 |
| DOI: | 10.1017/s0025315400033804 |
| Popis: | Tissue growth in Crustacea occurs at specific stages of the moult cycle and is influenced by a number of physical, hormonal and environmental factors. In order to understand the mechanisms responsible for controlling intermittent muscle growth in Crustacea, the effects of various factors on rates of protein synthesis and gene expression for the myofibrillar proteins, have been examined. These studies include the effects of mechanical stretch on muscle fibres; the influence of the moulting hormones, ecdysteroids; and the effect of temperature which is an important environmental variable. Sarcomeric proteins have been cloned and used to measure mRNA levels of actin, myosin HC and tropomyosin in various muscles over the moult cycle. Results from these studies demonstrate that both transcriptional and translational regulation occurs in response to hormonal and mechanical stimulation. Temperature has a direct effect on rates of protein synthesis and transcription in intermoult muscles but overall protein turnover may remain unchanged due to a concomitant increase in protein degradation rates. |
| Databáze: | OpenAIRE |
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