Protein Family Models

DNA polymerase III subunit gamma/tau is part of the DNA polymerase III holoenzyme; gamma and tau subunits are isoforms and either one or both may be present in the holoenzyme; gamma interacts with the delta subunit to transfer the beta subunit on the DNA while tau serves as a scaffold to help in the dimerization of the core complex

Date:

2017-09-28

This model represents the well-conserved first ~ 365 amino acids of the translation of the dnaX gene. The full-length product of the dnaX gene in the model bacterium E. coli is the DNA polymerase III tau subunit. A translational frameshift leads to early termination and a truncated protein subunit gamma, about 1/3 shorter than tau and present in roughly equal amounts. This frameshift mechanism is not necessarily universal for species with DNA polymerase III but appears conserved in the exterme thermophile Thermus thermophilis.

Gene:

dnaX

Date:

2024-05-30

Catalyzes the DNA-template-directed extension of the 3'-end of a DNA strand; the tau chain serves as a scaffold to help in the dimerizaton of the alpha,epsilon and theta core complex; the gamma chain seems to interact with the delta and delta' subunits to transfer the beta subunit on the DNA

Gene:

dnaX

Date:

2021-07-28