Study of suppressive effect of ATPon denaturation offish muscle protein

生理浓度的ATP对鱼肌蛋白（肌原蛋白、肌球蛋白s-1、肌浆网和肌红蛋白）在冷冻、加热和酸性pH条件下的变性有较强的抑制作用。ATP的存在抑制了金枪鱼肌红蛋白的自氧化速率。结果表明，ATP具有能量货币和蛋白质稳定剂两种功能。鱼类肌肉中剩余的三磷酸腺苷在冷冻储存过程中起着冷冻保护剂的作用。

ATP with physiological concentration showed strong suppressiveeffect on denaturation by the treatment of frozen, heat and acidic pH of fish muscle proteins which are myofibrillar protein, myosin s-1, sarcoplasmic reticulum and myoglobin. The autoxidation rate of tuna myoglobin was suppressed in the presence of ATP. The results indicate ATP has two functions, which are currency of energy and protein stabilizer. The ATP remaining in fish muscle works as a cryoprotectant during frozen storage.