Any of a class of proteins found extensively in blood plasma, milk, muscle, and plant seeds that are insoluble in pure water, soluble in dilute salt solution, and coagulable by heat.

• 球蛋白一类蛋白，广泛见于血浆、奶、肌肉和植物种子中，不溶于纯水，溶于稀盐溶液，受热凝聚