Food Storage and Transport

Transition-Metal Storage, Transport, and Biomineralization

Transport mechanisms in acetylcholine and monoamine storage.

Sequence-related vesicular acetylcholine transporter (VAChT) and vesicular monoamine transporter (VMAT) transport neurotransmitter substrates into secretory vesicles. This review seeks to identify shared and differentiated aspects of the transport mechanisms. VAChT and VMAT exchange two protons per substrate molecule with very similar initial velocity kinetics and pH dependencies. However, vesi...

Lipid Synthesis, Intracellular Transport, Storage, and Secretion

A time sequence study of intracellular movement of labeled lipid in the liver was carried out on fasted and ethanol-treated rats injected with either palmitate-(3)H or glycerol-(3)H by electron microscopic radioautography. The elimination of water-soluble lipid precursors during specimen preparation was checked and found to be complete. The labeled lipid product in the tissue was identified as ...

Lipid Synthesis, Intracellular Transport, and Storage

Rat hearts pulse-labeled by perfusion in vitro with 9,10-oleic acid-H for 15 or 30 sec were shown to take up the fatty acid extensively. In hearts postperfused with unlabeled medium for 15 sec or more, 90% of the radioactivity was recovered in esterified lipids. The radioautographic reaction was localized initially over elements of the sarcoplasmic reticulum and mitochondria. After longer perio...

Modeling Modes of Hunter-gatherer Food Storage

thinking about the economics of huntergatherer food storage, this critical component of many foraging economies and important factor in the evolution of complex social systems remains poorly understood, leading Kuijt (2009:641) to recently lament that “archaeologists have yet to develop a detailed understanding of the scale of economic contributions of food storage in preagriculturalist communi...