The second stage of glycolysis is an isomerization reaction. In this reaction the glucose-6-phosphate is rearranged into fructose-6-phosphate by the enzyme glucose phosphate isomerase. This is a reversible reaction under normal conditions of the cell.
Kinetochore. A specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape; the centromere is difficult to sequence. Please contribute to this project, if you have more information about this term feel free to edit this page.
The suffix-chore is from the Greek word choros, meaning place. In mammals, when the spindle connects, 15-35 pole-to-chromosome microtubules ( kinetochore microtubules ) attach to each single kinetochore. But the number is smaller in many other organisms. In yeast only a single microtubule connects. Each normal chromatid has one and only one kinetochore. Like other biological structures, kinetochores are composed of protein.