Glycogenin-1

Effect of muscle-fiber type on glycogenin-1 gene expression and its relationship with the glycolytic potential and pH of pork

S. - H. Zhang, Zhu, L., Wu, Z. - H., Zhang, Y., Tang, G. - Q., Jiang, Y. - Z., Li, M. - Z., Bai, L., and Li, X. - W., Effect of muscle-fiber type on glycogenin-1 gene expression and its relationship with the glycolytic potential and pH of pork, vol. 12, pp. 3383-3390, 2013.

This study analyzed the effect of muscle-fiber type composition on glycogenin-1 (GYG) gene expression and its impact on pH. The longissimus dorsi (LD) muscle contains more type IIB fibers (75.10%) than does the psoas major (PM) muscle (41.58%), while the PM has more type I (3.65 vs 0.94%), type IIA (34.15 vs 10.63%), and type IIX (20.62 vs 13.33%) fibers. Compared with PM, glycolytic potential (GP), pH45 min, and DpH from 45 min to 24 h post-mortem were all relatively higher in LD.

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