Transport proteins are proteins that aid the movement of materials, either across plasma membranes in cells or through the circulatory system. Some transport proteins form channels through the membrane to allow passive flow of a substance down its...

A transmembrane protein that helps a certain substance or class of closely related substances to cross the membrane Transport protein can refer...

Suc represents the major transport form for carbohydrates in plants. Suc is loaded actively against a concentration gradient into sieve elements, which constitute the conduit for assimilate export out of leaves. Three members of the Suc transporter family with different properties were identified: SUT1,...

Nucleosome assembly protein 1 (NAPl) is conserved from yeast to human and facilitates the in vitro assembly of nucleosomes as a histone chaperone. Inconsistent with their proposed function in the nucleus, however, many NAPl proteins had been reported to localize in the cytoplasm. We...