Family D Polymerase / PCNA / Switch Hook / REPLICATION
機能・相同性
機能・相同性情報
exodeoxyribonuclease I / DNA polymerase complex / single-stranded DNA 3'-5' DNA exonuclease activity / intein-mediated protein splicing / intron homing / DNA catabolic process / DNA strand elongation involved in DNA replication / DNA polymerase processivity factor activity / leading strand elongation / regulation of DNA replication ...exodeoxyribonuclease I / DNA polymerase complex / single-stranded DNA 3'-5' DNA exonuclease activity / intein-mediated protein splicing / intron homing / DNA catabolic process / DNA strand elongation involved in DNA replication / DNA polymerase processivity factor activity / leading strand elongation / regulation of DNA replication / DNA-templated DNA replication / endonuclease activity / DNA-directed DNA polymerase / DNA-directed DNA polymerase activity / DNA binding / identical protein binding 類似検索 - 分子機能
DNA polymerase II large subunit DP2 / DNA polymerase II large subunit DP2, N-terminal / DNA polymerase II large subunit DP2, N-terminal / DNA polymerase II small subunit, archaeal / : / DNA polymerase II small subunit, N-terminal domain / DNA polymerase delta/II small subunit family / LAGLIDADG-like domain / Intein splicing domain / Intein ...DNA polymerase II large subunit DP2 / DNA polymerase II large subunit DP2, N-terminal / DNA polymerase II large subunit DP2, N-terminal / DNA polymerase II small subunit, archaeal / : / DNA polymerase II small subunit, N-terminal domain / DNA polymerase delta/II small subunit family / LAGLIDADG-like domain / Intein splicing domain / Intein / Intein DOD homing endonuclease / Intein DOD-type homing endonuclease domain profile. / DNA polymerase alpha/delta/epsilon, subunit B / DNA polymerase alpha/epsilon subunit B / Homing endonuclease, LAGLIDADG / Intein C-terminal splicing region / Intein C-terminal splicing motif profile. / Hint domain C-terminal / Hint (Hedgehog/Intein) domain C-terminal region / Intein N-terminal splicing region / Intein N-terminal splicing motif profile. / Hint domain N-terminal / Hint (Hedgehog/Intein) domain N-terminal region / Homing endonuclease / Hint domain superfamily / Proliferating cell nuclear antigen, PCNA, conserved site / Proliferating cell nuclear antigen signature 1. / Proliferating cell nuclear antigen, PCNA / Proliferating cell nuclear antigen, PCNA, N-terminal / Proliferating cell nuclear antigen, PCNA, C-terminal / Proliferating cell nuclear antigen, N-terminal domain / Proliferating cell nuclear antigen, C-terminal domain / : / Metallo-dependent phosphatase-like / Nucleic acid-binding, OB-fold 類似検索 - ドメイン・相同性
DNA polymerase II large subunit / DNA polymerase II small subunit / DNA polymerase sliding clamp 1 類似検索 - 構成要素
Ministry of Education, Culture, Sports, Science and Technology (Japan)
18K06089
日本
Ministry of Education, Culture, Sports, Science and Technology (Japan)
17H01818
日本
Japan Agency for Medical Research and Development (AMED)
19am0101069j0003
日本
Ministry of Education, Culture, Sports, Science and Technology (Japan)
18K05442
日本
Ministry of Education, Culture, Sports, Science and Technology (Japan)
26242075
日本
Japan Science and Technology
JPMJPR12L9
日本
Japan Agency for Medical Research and Development (AMED)
JP19am01010720231
日本
引用
ジャーナル: BMC Biol / 年: 2020 タイトル: Two conformations of DNA polymerase D-PCNA-DNA, an archaeal replisome complex, revealed by cryo-electron microscopy. 著者: Kouta Mayanagi / Keisuke Oki / Naoyuki Miyazaki / Sonoko Ishino / Takeshi Yamagami / Kosuke Morikawa / Kenji Iwasaki / Daisuke Kohda / Tsuyoshi Shirai / Yoshizumi Ishino / 要旨: BACKGROUND: DNA polymerase D (PolD) is the representative member of the D family of DNA polymerases. It is an archaea-specific DNA polymerase required for replication and unrelated to other known DNA ...BACKGROUND: DNA polymerase D (PolD) is the representative member of the D family of DNA polymerases. It is an archaea-specific DNA polymerase required for replication and unrelated to other known DNA polymerases. PolD consists of a heterodimer of two subunits, DP1 and DP2, which contain catalytic sites for 3'-5' editing exonuclease and DNA polymerase activities, respectively, with both proteins being mutually required for the full activities of each enzyme. However, the processivity of the replicase holoenzyme has additionally been shown to be enhanced by the clamp molecule proliferating cell nuclear antigen (PCNA), making it crucial to elucidate the interaction between PolD and PCNA on a structural level for a full understanding of its functional relevance. We present here the 3D structure of a PolD-PCNA-DNA complex from Thermococcus kodakarensis using single-particle cryo-electron microscopy (EM). RESULTS: Two distinct forms of the PolD-PCNA-DNA complex were identified by 3D classification analysis. Fitting the reported crystal structures of truncated forms of DP1 and DP2 from Pyrococcus ...RESULTS: Two distinct forms of the PolD-PCNA-DNA complex were identified by 3D classification analysis. Fitting the reported crystal structures of truncated forms of DP1 and DP2 from Pyrococcus abyssi onto our EM map showed the 3D atomic structural model of PolD-PCNA-DNA. In addition to the canonical interaction between PCNA and PolD via PIP (PCNA-interacting protein)-box motif, we found a new contact point consisting of a glutamate residue at position 171 in a β-hairpin of PCNA, which mediates interactions with DP1 and DP2. The DNA synthesis activity of a mutant PolD with disruption of the E171-mediated PCNA interaction was not stimulated by PCNA in vitro. CONCLUSIONS: Based on our analyses, we propose that glutamate residues at position 171 in each subunit of the PCNA homotrimer ring can function as hooks to lock PolD conformation on PCNA for ...CONCLUSIONS: Based on our analyses, we propose that glutamate residues at position 171 in each subunit of the PCNA homotrimer ring can function as hooks to lock PolD conformation on PCNA for conversion of its activity. This hook function of the clamp molecule may be conserved in the three domains of life.