支链氨基酸

白氨酸

异白氨酸

缬氨酸

支链氨基酸（branched-chain amino acid，BCAA）是指白氨酸、异白氨酸和缬氨酸三种分子结构中侧链具有分支结构的氨基酸。在运动界常作为增强肌肉力量的补充剂。

深入阅读

• Karlsson HK, Nilsson PA, Nilsson J, Chibalin AV, Zierath JR, Blomstrand E. Branched-chain amino acids increase p70S6k phosphorylation in human skeletal muscle after resistance exercise. Am. J. Physiol. Endocrinol. Metab. 2004, 287 (1): E1–7. PMID 14998784. doi:10.1152/ajpendo.00430.2003. 
• Blomstrand E, Eliasson J, Karlsson HK, Köhnke R. Branched-chain amino acids activate key enzymes in protein synthesis after physical exercise. J. Nutr. 2006, 136 (1 Suppl): 269S–73S. PMID 16365096. 
• Norton LE, Layman DK. Leucine regulates translation initiation of protein synthesis in skeletal muscle after exercise. J. Nutr. 2006, 136 (2): 533S–537S. PMID 16424142. 

外部链接

• 医学主题词表（MeSH）：Branched-chain+amino+acids
• branched-chain amino acid degradation pathway