- EMDB-8565: Cryo-EM structure of bacteriphage T7 replisome -
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データベース: EMDB / ID: EMD-8565
タイトル
Cryo-EM structure of bacteriphage T7 replisome
マップデータ
Cryo-EM structure of bacteriophage T7 replisome
試料
複合体: Bacteriophage T7 replisome. A complex of DNA primase-helicase with two molecules of DNA polymerase
機能・相同性
機能・相同性情報
DNA synthesis involved in DNA replication / DNA exonuclease activity / DNA replication, synthesis of primer / viral DNA genome replication / 加水分解酵素; エステル加水分解酵素; 5'-リン酸モノエステル産生エンドデオキシリボヌクレアーゼ / 3'-5' exonuclease activity / DNA helicase activity / DNA-templated DNA replication / 転移酵素; リンを含む基を移すもの; 核酸を移すもの / DNA-directed RNA polymerase activity ...DNA synthesis involved in DNA replication / DNA exonuclease activity / DNA replication, synthesis of primer / viral DNA genome replication / 加水分解酵素; エステル加水分解酵素; 5'-リン酸モノエステル産生エンドデオキシリボヌクレアーゼ / 3'-5' exonuclease activity / DNA helicase activity / DNA-templated DNA replication / 転移酵素; リンを含む基を移すもの; 核酸を移すもの / DNA-directed RNA polymerase activity / double-strand break repair / single-stranded DNA binding / 5'-3' DNA helicase activity / DNA helicase / DNA-directed DNA polymerase / DNA-directed DNA polymerase activity / nucleotide binding / ATP hydrolysis activity / DNA binding / zinc ion binding / ATP binding / metal ion binding / identical protein binding 類似検索 - 分子機能
Bacteriophage T7 DNA helicase/primase / : / Bacteriophage T7 DNA helicase/primase, N-terminal a+b fold / Bacteriophage T7, Gp4, DNA primase/helicase, N-terminal / Zinc-binding domain of primase-helicase / Zinc-binding domain of primase-helicase / DNA-directed DNA polymerase T7 / Twinkle-like protein / Archaeal primase DnaG/twinkle-like, TOPRIM domain / Toprim-like ...Bacteriophage T7 DNA helicase/primase / : / Bacteriophage T7 DNA helicase/primase, N-terminal a+b fold / Bacteriophage T7, Gp4, DNA primase/helicase, N-terminal / Zinc-binding domain of primase-helicase / Zinc-binding domain of primase-helicase / DNA-directed DNA polymerase T7 / Twinkle-like protein / Archaeal primase DnaG/twinkle-like, TOPRIM domain / Toprim-like / DnaB-like helicase C terminal domain / DNA helicase, DnaB-like, C-terminal / Superfamily 4 helicase domain profile. / TOPRIM / DNA polymerase A / DNA polymerase family A / DNA-directed DNA polymerase, family A, conserved site / DNA polymerase family A signature. / DNA-directed DNA polymerase, family A, palm domain / DNA polymerase A domain / Toprim domain profile. / TOPRIM domain / Ribonuclease H superfamily / Ribonuclease H-like superfamily / DNA/RNA polymerase superfamily / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
DNA-directed DNA polymerase / DNA helicase/primase 類似検索 - 構成要素
ジャーナル: Proc Natl Acad Sci U S A / 年: 2017 タイトル: Cryo-EM structure of the replisome reveals multiple interactions coordinating DNA synthesis. 著者: Arkadiusz W Kulczyk / Arne Moeller / Peter Meyer / Piotr Sliz / Charles C Richardson / 要旨: We present a structure of the ∼650-kDa functional replisome of bacteriophage T7 assembled on DNA resembling a replication fork. A structure of the complex consisting of six domains of DNA helicase, ...We present a structure of the ∼650-kDa functional replisome of bacteriophage T7 assembled on DNA resembling a replication fork. A structure of the complex consisting of six domains of DNA helicase, five domains of RNA primase, two DNA polymerases, and two thioredoxin (processivity factor) molecules was determined by single-particle cryo-electron microscopy. The two molecules of DNA polymerase adopt a different spatial arrangement at the replication fork, reflecting their roles in leading- and lagging-strand synthesis. The structure, in combination with biochemical data, reveals molecular mechanisms for coordination of leading- and lagging-strand synthesis. Because mechanisms of DNA replication are highly conserved, the observations are relevant to other replication systems.