. Die biologische Bulletin. Biologie; Zoologie; Biologie; Meeresbiologie. 328 L.S. QUACKENBUSH UND L.L. KEI I I N IC ICH vipn^-. • Ablati Probe Proteine (mg) Hepatopancreas llemolymph (rude ich Pellet Supernatanl Stichprobe" ii 04 (1.421 ± 0,05 0,55 ± 0,06 0,045 ± 0,01 ± 0,02 0.401 DPM/MG/Stunde (0,50 ± 0,01 1,014 ± 0,01 (1,390 ± 0,01 Ovarj Hepatopancreas Hemolvmph Roh extrahieren Pellet Überstand 5.611 ± 1.065 865 - 181 2.973 ± 1.20841,560 ± 1,425 2,977 ±755 1.448 3.803 ± 567 ± 123 792 ± 71 778 ± 79 ml Werte sind Mittel ± eine Standardabweichung, n = 12 für alle Fälle, 2 Wiederholungen. C "unhöflich Extrakt ist der

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. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 328 L. S. QUACKENBUSH AND L. L. KEI I I N. Ic I vipn^-. • ablati Sample Proteins (mg) Hepatopancreas llemolymph ("rude I Pellet Supernatanl Sample ' ii 04 (1.421 ±0.05 0.55 ±0.06 0.045 ±0.01 0.401 ±0.02 DPM/MG/Hour 0.50 ±0.01 (1.014 ±0.01 (1.390 ±0.01 Ovarj Hepatopancreas Hemolvmph Crude Extract Pellet Supernatant 5.611 ± 1.065 865 - 181 2.973 ± 1.208 8, 536 ± 1.425 2.977 ± 755 3.803 ± 567 1.448 ± 123 792 ±71 778 ± 79 Ml values are means ± one standard deviation, n = 12 for all cases, 2 replicates. C'rude extract is the initial tissue homogenate, Pellet is the protein precipitated bv the antihod> to vitellogenin, Supernatant is the protein not precipitated bv the antibod>. Recovers of both label and protein was between SO-901; tor these assays. lion from the crude material (traction #29. Rf = 0.48). Fraction -2^ inhibited Vg 14C leucine incorporation. It was specific to Vg proteins. Fraction #29 had no signifi- cant effect on I4C leucine incorporation into proteins other than Vg. represented by the supernatant in the im- munoassay (Table II). Both the crude starting material and material from the column void volume inhibited MC leucine incorporation into both Vg and non-Vg proteins, demonstrating non-specific protein synthesis inhibition (Table II. Fig. 6). Based on the si/e estimate for fraction #29 (3.300 ± 500 daltons) the material in this fraction was biologically active at 1.8 < 10 ".I/protein. Discussion The primary source of crustacean egg yolk proteins was first suggested to be extra-ovarian (Wallace cl V Ganion and Kessel, 1972; Wolin cl til. 1973: Schade and Si ivers, 1980). Direct demonstration of pioiem synthi oanan tissue supported the new view that the • ontribution to overall egg yolk protein svnth mficant. I he relalivclv slow rale M| ovarian prolcm s in isolated ovarian tissue supported the argument >'iat extra-ovarian tissue also contrib

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