Novel structure of an N-terminal domain that is crucial for the dimeric assembly and DNA-binding of an archaeal DNA polymerase D large subunit from Pyrococcus horikoshii
Archaea-specific D-family DNA polymerase forms a heterotetramer consisting of two large polymerase subunits and two small exonuclease subunits. The N-terminal (1-300) domain structure of the large subunit was determined by X-ray crystallography, although ∼50 N-terminal residues were disordered ...
Archaea-specific D-family DNA polymerase forms a heterotetramer consisting of two large polymerase subunits and two small exonuclease subunits. The N-terminal (1-300) domain structure of the large subunit was determined by X-ray crystallography, although ∼50 N-terminal residues were disordered. The determined structure consists of nine alpha helices and three beta strands. We also identified the DNA-binding ability of the domain by SPR measurement. The N-terminal (1-100) region plays crucial roles in the folding of the large subunit dimer by connecting the ∼50 N-terminal residues with their own catalytic region (792-1163).
Related Citations:
Subunit interaction and regulation of activity through terminal domains of the family D DNA polymerase from Pyrococcus horikoshii Shen, Y., Tang, X.-F., Matsui, I. (2003) J Biol Chem 278: 21247
Organizational Affiliation:
Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan. ik-matsui@aist.go.jp
Download Mendeley
