The directed movement of betaine, the N-trimethyl derivative of an amino acid, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.

The directed movement of choline into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. Choline (2-hydroxyethyltrimethylammonium) is an amino alcohol that occurs widely in living organisms as a constituent of certain types of phospholipids and in the neurotransmitter acetylcholine.

The chemical reactions and pathways resulting in the breakdown of glycine betaine, N-trimethylglycine.

The directed movement of glycine betaine, N-trimethylglycine, into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.

The chemical reactions and pathways resulting in the breakdown of choline (2-hydroxyethyltrimethylammonium), an amino alcohol that occurs widely in living organisms as a constituent of certain types of phospholipids and in the neurotransmitter acetylcholine.

The directed movement of carnitine across a membrane.

A complex for the transport of metabolites into and out of the cell, typically comprised of four domains; two membrane-associated domains and two ATP-binding domains at the intracellular face of the membrane, that form a central pore through the plasma membrane. Each of the four core domains may be encoded as a separate polypeptide or the domains can be fused in any one of a number of ways into multidomain polypeptides. In Bacteria and Archaebacteria, ABC transporters also include substrate binding proteins to bind substrate external to the cytoplasm and deliver it to the transporter.