Nucleosid diphosphate kinase

Nucleoside-diphosphate kinases are enzymes that catalyze the exchange of phosphate groups between different nucleotides. The overall effect of NDKs is to transfer a phosphate group from a nucleoside triphosphate to a nucleoside diphosphate. Starting with ATP and UDP, the activity of NDK produces ADP and UTP.

Chemical equation

$ATP + UDP \leftrightarrow ADP + UTP$

Rate equation

Random order Bi-Bi rate law is used

\frac{ \frac{V_{max}}{K_m^{ATP}K_m^{UDP}}\left( [ATP][UDP] - \frac{[ADP][UTP]}{K_{eq}} \right) } {1}