A solute binding protein ofStreptococcus pneumoniaeiron transport

Solute-binding protein-dependent ABC transporters are responsible for solute efflux in addition to solute uptake.

The ATP-binding cassette (ABC) transporter superfamily is one of the most widespread of all gene families and currently has in excess of 1100 members in organisms ranging from the Archaea to manQ1. The movement of the diverse solutes of ABC transporters has been accepted as being strictly unidirectional, with recent models indicating that they are irreversible. However, contrary to this paradig...

Evolution of an enzyme from a solute-binding protein

15 Much of the functional diversity observed in modern enzyme superfamilies originates from 16 molecular tinkering with existing enzymes. New enzymes frequently evolve from enzymes 17 with latent, promiscuous activities, and often inherit key features of the ancestral enzyme, 18 retaining conserved catalytic groups and stabilizing analogous intermediates or transition 19 states. While experimen...

Extraction of model parameters for reactive solute transport

In the present study, tried to examine the reactive solute relationships for transport and degradation processes through the rockfill media. By applying the analytical solution of reactive transport, the 1st to 3rd theoretical temporal moments have been extracted then, by using two methods of curve fitting and temporal moment matching, the coefficients of dispersion and degradation have been ex...

Active Solute Transport across Frog

Solute Transport Plant Plasma Membrane

The plasma membrane proton pump (H+-ATPase) energizes solute uptake by secondary transporters. Wild-type Arabidopsis plasma membrane H+-ATPase (AHA2) and truncated H+-ATPases lacking 38, 51, 61, 66, 77, 92, 96, and 104 C-terminal amino acids were produced in yeast. All AHAS species were correctly targeted to the yeast plasma membrane and, in addition, accumulated in interna1 membranes. Removal ...