ATP + [alpha/beta-tubulin]-(alpha-L-glutamyl-gamma-L-glutamyl)-L-glutamate + n L-glutamate = [alpha/beta-tubulin]-(gamma-(poly-alpha-L-glutamyl)-L-glutamyl)-L-glutamate + n ADP + n phosphate
n ATP + [alpha/beta-tubulin]-L-glutamate + n L-glutamate = [alpha/beta-tubulin]-(gamma-(poly-alpha-L-glutamyl)-L-glutamyl)-L-glutamate + n ADP + n phosphate
ATP + [alpha/beta-tubulin]-(alpha-L-glutamyl-gamma-L-glutamyl)-L-glutamate + n L-glutamate = [alpha/beta-tubulin]-(gamma-(poly-alpha-L-glutamyl)-L-glutamyl)-L-glutamate + n ADP + n phosphate
n ATP + [alpha/beta-tubulin]-L-glutamate + n L-glutamate = [alpha/beta-tubulin]-(gamma-(poly-alpha-L-glutamyl)-L-glutamyl)-L-glutamate + n ADP + n phosphate