“Whoa! It’s like Spotify but for academic articles.”

Instant Access to Thousands of Journals for just $40/month

Try 2 weeks free now

Energy Coupling for Membrane Transport

PRIMARY AND SECONDARY TRANSPORT PROCESSES Metabolic energy may be supplied to membrane transport processes either directly, by mechanisms which couple the "uphill" movement of, for instance, Na+ or H+ with a chemical reaction such as the hydrolysis of ATP, or indirectly, by mecha­ nisms which couple the transport of other substances to the back-fluxes H+ down their electrochemical gradients (cf 124). Recent research has attempted to define more precisely the primary metabolic transport processes, and at the same time has revealed the great extent and importance of the secondary mechanisms of cotransport and countertransport [symport and antiport in the terminology of Mitchell (122, 123)]. Because the primary and secondary transport processes fre­ quently interact with each other via the membrane potential, increasing attention is being paid to the role of the potential in energy coupling and to whether a given t ransport process is electrogenic, i.e. whether it contributes directly to the potential by transporting a net electric charge across the membrane. In this review we will consider the nature and role of electrogenic H+ efflux and other primary transport processes at the plasmalemma and, where possible, at the tonoplast of plant cells, and will discuss the mode http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annual Review of Plant Biology Annual Reviews
Loading next page...

You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy unlimited access and
personalized recommendations from
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $40/month

Try 2 weeks free now

Explore the DeepDyve Library

How DeepDyve Works

Spend time researching, not time worrying you’re buying articles that might not be useful.

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from Springer, Elsevier, Nature, IEEE, Wiley-Blackwell and more.

All the latest content is available, no embargo periods.

See the journals in your area

Simple and Affordable Pricing

14-day free trial. Cancel anytime, with a 30-day money-back guarantee.

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Best Deal — 25% off

Annual Plan

  • All the features of the Professional Plan, but for 25% off!
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

billed annually