Naslov
Enzymes involved in osmolyte transport processes in the Adriatic lobster Homarus gammarus

Autori
Pavičić-Hamer, Dijana ; Devescovi, Massimo ; Lucu, Čedomil

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Rapport du 36e Congres de la CIESM / Briand, Frederic - Monte Carlo : Commission Internationale pour l'Exploration Scientifique de la Mer Mediterranee, 2001, 204-204

Skup
36th CIESM Congress

Mjesto i datum
Monte Carlo, Monako, 24.09.2001. - 28.09.2001

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
lobster; Homarus gammarus; branchiostegite; antennal gland; Na; K-ATPase Carbonic anhydrase

Sažetak
Trasport related enzymes Na, K- ATPase and carbonic anhydrase (CA) were studied in the branchiostegite and antennal gland of the commercially important Adriatic lobster Homarus gammarus acclimated to seawater (SW, 38ppt) and dilute seawater (DSW, 20ppt).In homogenates of branchiostegite from DSW-acclimated lobsters, specific activity of Na, K- ATPase was about 2-fold higher of the native (3.2 mmol Pi/h/mg protein) and saponin treatede homogenates (6.6 mmolPi/h/mg protein) than those of the SW-acclimate lobsters. In DSW acclimated lobsters , CA activity of branchiostegite homogenates was 5.6 -fold of activities reported in SW (4.42 U per mg proteins). In DSW specific activity of the Na, K-ATPase in antennal gland native homogenates was 2-fold increased of the SW lobsters (3.2 mmol Pi/h/mg protein). However, the CA in antennal gland was not activated in DSW keeping the same values as in SW. The result suggest different strategies of the enzyme fitting in the studied osmoregulatory tissues.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

POVEZANOST RADA