Cocoonase

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A cocoonase (do inglés cocoon, 'casulo' + ase, terminación dos nomes de encimas) é un encima proteolítico[1] similar á tripsina[2] producido polos vermes da seda (especies dos xéneros Bombyx[3] e Antheraea[4][5]) cando se achegan ás fases finais da súa metamorfose. Prodúcese polas células da probóscide[6] e é exsudada sobre as galeas da maxila.[7] A súa función é debilitar as fibras do casulo, facilitando a saída do insecto adulto.

Foi descuberta por Carroll Williams.[8]

Notas[editar | editar a fonte]

  1. Cocoonase: I. PRELIMINARY CHARACTERIZATION OF A PROTEOLYTIC ENZYME FROM SILK MOTHS Fotis C. Kafatos, Alan M. Tartakoff and John H. Law, Journal of Biological Chemistry vol. 242, 1477-87 (1967)
  2. Cocoonase: III. PURIFICATION, PRELIMINARY CHARACTERIZATION, AND ACTIVATION OF THE ZYMOGEN OF AN INSECT PROTEASE Edward Berger and Fotis C. Kafatos, Ronald L. Felsted and John H. Law; Journal of Biological Chemistry vol. 246, no. 13 (July 10, 1971); pp 4131-4137
  3. Eguchi, M.; Iwamoto, A. (1975). "Rôle of the midgut, crop, and maxillae of Bombyx mori in the production of cocoon-digesting enzyme". Journal of Insect Physiology 21 (7): 1365. doi:10.1016/0022-1910(75)90262-0. 
  4. CARBONIC ANHYDRASE ACTIVITY DURING THE LARVAL-PUPAL TRANSFORMATION OF HYALOPHORA CECROPIA REARED ON FOLIAGE AND SYNTHETIC DIET: EFFECTS OF POTASSIUM AND CHLORIDE ON MIDGUT, FAT BODY AND INTEGUMENTARY ENZYMES, by James W. Johnston and Arthur M. Jungreis, Journal of Experimental Biology vol. 91 (1981), pp 255-269
  5. Cocoonase V. STRUCTURAL STUDIES ON AN INSECT SERINE PROTEASE Arquivado 04 de marzo de 2016 en Wayback Machine. by Karl J. Kramer, Ronald L. Felsted, and John H. Law, Journal of Biological Chemistry vol. 248 (1973) no. 9, pp 3021-3028
  6. Moths of Australia by I. F. B. Common, published January 1990 by CSIRO Publishing, via Google Books
  7. PHYSIOLOGY OF INSECT ECDYSIS I. THE ECLOSION BEHAVIOUR OF SATURNIID MOTHS AND ITS HORMONAL RELEASE, from the Journal of Experimental Biology, by James W. Truman, vol. 54 (1971), pp 805-814
  8. Memorial Minutes on Carroll Williams (FAS) and Aaron Gissen (HMS) and Louis Zetzel (HMS) Arquivado 04 de xuño de 2011 en Wayback Machine., da Harvard Gazette; publicado o 21 de marzo de 1996

Véxase tamén[editar | editar a fonte]

Ligazóns externas[editar | editar a fonte]

Outros artigos[editar | editar a fonte]


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