- EMDB-23301: The negative stain EM structure of full-length DNA Ligase III in ... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-23301
タイトル
The negative stain EM structure of full-length DNA Ligase III in complex with TDP1
マップデータ
Full-length DNA LigIII in complex with TDP1
試料
複合体: Full-length DNA LigIII in complex with TDP1
タンパク質・ペプチド: LigIII-alpha nuclear
タンパク質・ペプチド: Tyrosyl-DNA phosphodiesterase 1
キーワード
DNA repair / protein-protein interactions / DNA BINDING PROTEIN
機能・相同性
機能・相同性情報
DNA ligase III-XRCC1 complex / negative regulation of mitochondrial DNA replication / 3'-tyrosyl-DNA phosphodiesterase activity / DNA ligase activity / DNA ligase (ATP) / Strand-asynchronous mitochondrial DNA replication / DNA ligase (ATP) activity / 加水分解酵素; エステル加水分解酵素; リン酸ジエステル加水分解酵素 / single strand break repair / double-strand break repair via alternative nonhomologous end joining ...DNA ligase III-XRCC1 complex / negative regulation of mitochondrial DNA replication / 3'-tyrosyl-DNA phosphodiesterase activity / DNA ligase activity / DNA ligase (ATP) / Strand-asynchronous mitochondrial DNA replication / DNA ligase (ATP) activity / 加水分解酵素; エステル加水分解酵素; リン酸ジエステル加水分解酵素 / single strand break repair / double-strand break repair via alternative nonhomologous end joining / lagging strand elongation / HDR through MMEJ (alt-NHEJ) / exonuclease activity / Resolution of AP sites via the single-nucleotide replacement pathway / mitochondrial DNA repair / DNA biosynthetic process / APEX1-Independent Resolution of AP Sites via the Single Nucleotide Replacement Pathway / base-excision repair, gap-filling / Gap-filling DNA repair synthesis and ligation in GG-NER / mitochondrion organization / Nonhomologous End-Joining (NHEJ) / double-strand break repair via homologous recombination / base-excision repair / Gap-filling DNA repair synthesis and ligation in TC-NER / double-strand break repair / single-stranded DNA binding / double-stranded DNA binding / cell division / DNA repair / intracellular membrane-bounded organelle / mitochondrion / DNA binding / zinc ion binding / nucleoplasm / ATP binding / nucleus / plasma membrane / cytoplasm 類似検索 - 分子機能
DNA ligase 3, BRCT domain / DNA ligase 3 BRCT domain / : / Tyrosyl-DNA phosphodiesterase I / Tyrosyl-DNA phosphodiesterase / DNA ligase, ATP-dependent / DNA ligase, ATP-dependent, N-terminal / DNA ligase, ATP-dependent, N-terminal domain superfamily / DNA ligase N terminus / ATP-dependent DNA ligase AMP-binding site. ...DNA ligase 3, BRCT domain / DNA ligase 3 BRCT domain / : / Tyrosyl-DNA phosphodiesterase I / Tyrosyl-DNA phosphodiesterase / DNA ligase, ATP-dependent / DNA ligase, ATP-dependent, N-terminal / DNA ligase, ATP-dependent, N-terminal domain superfamily / DNA ligase N terminus / ATP-dependent DNA ligase AMP-binding site. / ATP-dependent DNA ligase signature 2. / DNA ligase, ATP-dependent, C-terminal / ATP dependent DNA ligase C terminal region / DNA ligase, ATP-dependent, conserved site / Zinc finger poly(ADP-ribose) polymerase (PARP)-type signature. / ATP-dependent DNA ligase family profile. / Zinc finger, PARP-type superfamily / Poly(ADP-ribose) polymerase and DNA-Ligase Zn-finger region / Zinc finger poly(ADP-ribose) polymerase (PARP)-type profile. / Poly(ADP-ribose) polymerase and DNA-Ligase Zn-finger region / Zinc finger, PARP-type / DNA ligase, ATP-dependent, central / ATP dependent DNA ligase domain / breast cancer carboxy-terminal domain / BRCT domain profile. / BRCT domain / BRCT domain superfamily / Nucleic acid-binding, OB-fold 類似検索 - ドメイン・相同性
DNA ligase 3 / Tyrosyl-DNA phosphodiesterase 1 類似検索 - 構成要素
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01 ES012512
米国
National Institutes of Health/National Cancer Institute (NIH/NCI)
R35 CA22043
米国
Natural Sciences and Engineering Research Council (NSERC, Canada)
RGPIN-2015-05776
カナダ
Other government
P01 CA92584
米国
Other government
DE-AC02-05BH11231
米国
引用
ジャーナル: J Biol Chem / 年: 2021 タイトル: Direct interaction of DNA repair protein tyrosyl DNA phosphodiesterase 1 and the DNA ligase III catalytic domain is regulated by phosphorylation of its flexible N-terminus. 著者: Ishtiaque Rashid / Michal Hammel / Aleksandr Sverzhinsky / Miaw-Sheue Tsai / John M Pascal / John A Tainer / Alan E Tomkinson / 要旨: Tyrosyl DNA phosphodiesterase 1 (TDP1) and DNA Ligase IIIα (LigIIIα) are key enzymes in single-strand break (SSB) repair. TDP1 removes 3'-tyrosine residues remaining after degradation of DNA ...Tyrosyl DNA phosphodiesterase 1 (TDP1) and DNA Ligase IIIα (LigIIIα) are key enzymes in single-strand break (SSB) repair. TDP1 removes 3'-tyrosine residues remaining after degradation of DNA topoisomerase (TOP) 1 cleavage complexes trapped by either DNA lesions or TOP1 inhibitors. It is not known how TDP1 is linked to subsequent processing and LigIIIα-catalyzed joining of the SSB. Here we define a direct interaction between the TDP1 catalytic domain and the LigIII DNA-binding domain (DBD) regulated by conformational changes in the unstructured TDP1 N-terminal region induced by phosphorylation and/or alterations in amino acid sequence. Full-length and N-terminally truncated TDP1 are more effective at correcting SSB repair defects in TDP1 null cells compared with full-length TDP1 with amino acid substitutions of an N-terminal serine residue phosphorylated in response to DNA damage. TDP1 forms a stable complex with LigIII, as well as full-length LigIIIα alone or in complex with the DNA repair scaffold protein XRCC1. Small-angle X-ray scattering and negative stain electron microscopy combined with mapping of the interacting regions identified a TDP1/LigIIIα compact dimer of heterodimers in which the two LigIII catalytic cores are positioned in the center, whereas the two TDP1 molecules are located at the edges of the core complex flanked by highly flexible regions that can interact with other repair proteins and SSBs. As TDP1and LigIIIα together repair adducts caused by TOP1 cancer chemotherapy inhibitors, the defined interaction architecture and regulation of this enzyme complex provide insights into a key repair pathway in nonmalignant and cancer cells.