ISOENZYMATIC PROFILE OF HEXOQUINASE AND ENOLASE IN NEURAL TISSUES

Authors

  • E. G. Delicado
  • M. Torres
  • A. Millaruedo
  • T. Miras-Portugal
Keywords: isoenzymes, hexokinase, enolase

Abstract

Tissues derived from the nueral crest showed a characteristic distribution and activity for each glycolitic isoenzyme. The hexokinase activity in chromaffin tissue, pheochromocytoma and melanoma was associated with the particulate fraction of the homogenate as previously described for brain hexokinase. The experimental values obtained were 1, 2.1 and 1.68 U/g respectively, corresponding to type I isoenzyme (neural isoenzyme). In sprite of the hexokinase, the enolase activity in these tissues was found in the cytosolic fraction. The activities were 13, 25 and 110 U/g for chromaffin tissue, pheochromocytoma and melanoma, respectively, corresponding to the αγ hybrid form. In melanoma some traces of the αα form, a non neural isoenzyme, could be detected.

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Author Biographies

E. G. Delicado

Departamento de Bioquímica Facultad de Biología Universidad de Murcia

M. Torres

Departamento de Bioquímica Facultad de Biología Universidad de Murcia

A. Millaruedo

Departamento de Bioquímica Facultad de Biología Universidad de Murcia

T. Miras-Portugal

Departamento de Bioquímica Facultad de Biología Universidad de Murcia
How to Cite
Delicado, E. G., Torres, M., Millaruedo, A., & Miras-Portugal, T. (1986). ISOENZYMATIC PROFILE OF HEXOQUINASE AND ENOLASE IN NEURAL TISSUES. Anales de Biología, (10), 27–32. Retrieved from https://revistas.um.es/analesbio/article/view/33531
Issue
Section
Biología general