Integral outer membrane receptors for iron chelates and vitamin B 12 carry out specific ligand transport against a concentration gradient. Energy for active transport is obtained from the ...

Biochemists found that as active transporters in cell membranes undergo conformational changes to allow their main substrates to pass through through, small molecules like water slip through as well.

(Nanowerk News) Inspired by micro-scale motions of nature, a group of researchers at the Indian Institute of Technology Madras and the Institute of Mathematical Sciences, in Chennai, India, has ...

Inspired by micro-scale motions of nature, a group of researchers has developed a new design for transporting colloidal particles, tiny cargo suspended in substances such as fluids or gels, more ...

Seeking students to contribute to research exploring motor-disease protein complexes and their role in intracellular transport, as they relate to disease initiation and the aging process, and the ...

The cytosolic free calcium concentration of higher plant cells is maintained at about 0.1 μM by the action of membrane calcium transporters. These act to remove calcium from the cytosol and expel it ...

Measurements have been made of the electrical potential difference between the exuding sap of detopped castor-oil plants and a nutrient solution bathing the roots. The initial concentrations of the ...