1. a protein in a cell membrane that transports two or more different substances across the membrane simultaneously, often in the same direction.
Usage: technical; biology; biochemistry

Examples

• The sodium-glucose cotransporter helps absorb glucose in the small intestine.
• Cotransporters are essential for nutrient uptake in many cell types.
• The SGLT1 cotransporter moves sodium and glucose together across the intestinal epithelium.
• Mutations in cotransporter genes can lead to metabolic disorders.
• Researchers study cotransporters to understand how cells regulate ion and nutrient balance.