Marine Biology

, Volume 41, Issue 3, pp 259–262 | Cite as

Mantle protein excretion and calcification in the hardshell clam Mercenaria mercenaria. II. Protein synthesis and excretion by the isolated mantle

  • S. D. Young
  • M. A. Crenshaw
  • D. B. King


Sheets of mantle tissue from above the mantle line of Mercenaria mercenaria were incubated for 2, 6 and 20 h at 20°C in 50 μCi 3H-glycine in 50 ml artificial seawater. Incorporation of tritium into soluble proteins excreted by the mantle and into tissue proteins was followed. The excretion of soluble protein continued throughout the experiment; the proportion of incorporated label excreted reached 17% by 20 h. The initiation of excretion of labelled protein seemed to lag 60 to 70 min behind the initiation of protein synthesis. Protein synthesis by the mantle contributed to proteins of the extrapallium and mantle chambers and, thus, may be involved in synthesis and regulation of proteins involved in the shell-formation process.


Protein Synthesis Soluble Protein Tritium Artificial Seawater Tissue Protein 
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Copyright information

© Springer-Verlag 1977

Authors and Affiliations

  • S. D. Young
    • 1
    • 2
  • M. A. Crenshaw
    • 1
  • D. B. King
    • 1
  1. 1.Dental Research Center, School of DentistryUniversity of North CarolinaChapel HillUSA
  2. 2.Department of Biological SciencesSt. John's UniversityJamaicaUSA

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