Skip Navigation

American Zoologist 1971 11(3):467-471; doi:10.1093/icb/11.3.467
© 1971 by The Society for Integrative and Comparative Biology
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Request Permissions
Google Scholar
Right arrow Articles by MOON, T. W.
Right arrow Articles by HOCHACHKA, A. P. W.
Right arrow Search for Related Content
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Effects of Hydrostatic Pressure on Catalysis by Epaxial Muscle Phosphofructokinase from an Abyssal Fish

THOMAS W. MOON, TARIQ MUSTAFA and AND PETER W. HOCHACHKA
Department of Zoology, University of British Columbia Vancouver 8, B. C, Canada

SYNOPSIS: Phosphofructokinase (PFK) extracted from muscle of abyssal Coryphaenoides fishes common in the deep waters around the Galápagos Archipelago is extremely unstable upon decompression and extraction and can be recovered only in low activities. Preliminary studies indicate that the pressure responses of the enzyme are complex: At low pressures, the enzyme is activated; at moderate pressures, activity passes through a pressure optimum; at high pressures, maximum catalytic activity is decelerated. At low pressures, the volume change of activation is about –11 cm3/mole at 3°C and increases to about –46 cm3/mole at 28°C. The homologous enzyme from a surface species (Oligoplites mundus) appears to be more pressure sensitive at low temperatures.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.