- EMDB-21405: Structure of the human clamp loader (Replication Factor C, RFC) b... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-21405
タイトル
Structure of the human clamp loader (Replication Factor C, RFC) bound to the sliding clamp (Proliferating Cell Nuclear Antigen, PCNA)
マップデータ
Structure of the human clamp loader RFC bound to the sliding clamp Proliferating Cell Nuclear Antigen (PCNA)
試料
複合体: Human Replication factor C (RFC) complex bound to the sliding clamp Proliferating cell nuclear antigen (PCNA)
タンパク質・ペプチド: Replication factor C subunit 1
タンパク質・ペプチド: Replication factor C subunit 2
タンパク質・ペプチド: Replication factor C subunit 5
タンパク質・ペプチド: Replication factor C subunit 4
タンパク質・ペプチド: Replication factor C subunit 3
タンパク質・ペプチド: Proliferating cell nuclear antigen
リガンド: MAGNESIUM ION
リガンド: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
リガンド: ADENOSINE-5'-DIPHOSPHATE
キーワード
sliding clamp / DNA replication / AAA+ / ATPase / clamp loader / DNA BINDING PROTEIN / REPLICATION
機能・相同性
機能・相同性情報
DNA clamp unloader activity / Elg1 RFC-like complex / DNA replication factor C complex / Ctf18 RFC-like complex / positive regulation of deoxyribonuclease activity / dinucleotide insertion or deletion binding / PCNA-p21 complex / mitotic telomere maintenance via semi-conservative replication / purine-specific mismatch base pair DNA N-glycosylase activity / nuclear lamina ...DNA clamp unloader activity / Elg1 RFC-like complex / DNA replication factor C complex / Ctf18 RFC-like complex / positive regulation of deoxyribonuclease activity / dinucleotide insertion or deletion binding / PCNA-p21 complex / mitotic telomere maintenance via semi-conservative replication / purine-specific mismatch base pair DNA N-glycosylase activity / nuclear lamina / positive regulation of DNA-directed DNA polymerase activity / Polymerase switching / DNA clamp loader activity / Telomere C-strand (Lagging Strand) Synthesis / MutLalpha complex binding / Processive synthesis on the lagging strand / PCNA complex / Removal of the Flap Intermediate / Processive synthesis on the C-strand of the telomere / Polymerase switching on the C-strand of the telomere / Removal of the Flap Intermediate from the C-strand / Mismatch repair (MMR) directed by MSH2:MSH3 (MutSbeta) / Mismatch repair (MMR) directed by MSH2:MSH6 (MutSalpha) / Transcription of E2F targets under negative control by DREAM complex / replisome / HDR through Single Strand Annealing (SSA) / response to L-glutamate / Impaired BRCA2 binding to RAD51 / DNA synthesis involved in DNA repair / DNA strand elongation involved in DNA replication / histone acetyltransferase binding / DNA polymerase processivity factor activity / leading strand elongation / G1/S-Specific Transcription / response to dexamethasone / replication fork processing / nuclear replication fork / Presynaptic phase of homologous DNA pairing and strand exchange / SUMOylation of DNA replication proteins / PCNA-Dependent Long Patch Base Excision Repair / ATP-dependent activity, acting on DNA / telomere maintenance via telomerase / translesion synthesis / mismatch repair / Activation of ATR in response to replication stress / response to cadmium ion / estrous cycle / cyclin-dependent protein kinase holoenzyme complex / base-excision repair, gap-filling / DNA polymerase binding / epithelial cell differentiation / male germ cell nucleus / positive regulation of DNA repair / TP53 Regulates Transcription of Genes Involved in G2 Cell Cycle Arrest / enzyme activator activity / Translesion synthesis by REV1 / Translesion synthesis by POLK / liver regeneration / Translesion synthesis by POLI / replication fork / Gap-filling DNA repair synthesis and ligation in GG-NER / positive regulation of DNA replication / nuclear estrogen receptor binding / Termination of translesion DNA synthesis / Recognition of DNA damage by PCNA-containing replication complex / Translesion Synthesis by POLH / G2/M DNA damage checkpoint / receptor tyrosine kinase binding / HDR through Homologous Recombination (HRR) / Dual Incision in GG-NER / cellular response to hydrogen peroxide / DNA-templated DNA replication / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / cellular response to UV / cellular response to xenobiotic stimulus / E3 ubiquitin ligases ubiquitinate target proteins / response to estradiol / heart development / Processing of DNA double-strand break ends / double-stranded DNA binding / DNA-binding transcription factor binding / Regulation of TP53 Activity through Phosphorylation / sequence-specific DNA binding / damaged DNA binding / chromosome, telomeric region / DNA replication / nuclear body / protein domain specific binding / DNA repair / centrosome / chromatin binding / protein-containing complex binding / chromatin / positive regulation of DNA-templated transcription / enzyme binding / negative regulation of transcription by RNA polymerase II / ATP hydrolysis activity / DNA binding / extracellular exosome 類似検索 - 分子機能
Replication factor C subunit 1 / DNA replication factor RFC1, C-terminal / Replication factor RFC1 C terminal domain / Replication factor C subunit 3, C-terminal domain / RCF1/5-like, AAA+ ATPase lid domain / Replication factor C, C-terminal / Replication factor C C-terminal domain / : / DNA polymerase III, delta subunit / : ...Replication factor C subunit 1 / DNA replication factor RFC1, C-terminal / Replication factor RFC1 C terminal domain / Replication factor C subunit 3, C-terminal domain / RCF1/5-like, AAA+ ATPase lid domain / Replication factor C, C-terminal / Replication factor C C-terminal domain / : / DNA polymerase III, delta subunit / : / DNA polymerase III, clamp loader complex, gamma/delta/delta subunit, C-terminal / Proliferating cell nuclear antigen signature 2. / 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 / BRCA1 C Terminus (BRCT) domain / : / breast cancer carboxy-terminal domain / BRCT domain profile. / BRCT domain / BRCT domain superfamily / ATPase family associated with various cellular activities (AAA) / ATPase, AAA-type, core / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
Proliferating cell nuclear antigen / Replication factor C subunit 4 / Replication factor C subunit 2 / Replication factor C subunit 1 / Replication factor C subunit 5 / Replication factor C subunit 3 類似検索 - 構成要素
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01-GM127776
米国
Swiss National Science Foundation
177859
スイス
引用
ジャーナル: Proc Natl Acad Sci U S A / 年: 2020 タイトル: Structure of the human clamp loader reveals an autoinhibited conformation of a substrate-bound AAA+ switch. 著者: Christl Gaubitz / Xingchen Liu / Joseph Magrino / Nicholas P Stone / Jacob Landeck / Mark Hedglin / Brian A Kelch / 要旨: DNA replication requires the sliding clamp, a ring-shaped protein complex that encircles DNA, where it acts as an essential cofactor for DNA polymerases and other proteins. The sliding clamp needs to ...DNA replication requires the sliding clamp, a ring-shaped protein complex that encircles DNA, where it acts as an essential cofactor for DNA polymerases and other proteins. The sliding clamp needs to be opened and installed onto DNA by a clamp loader ATPase of the AAA+ family. The human clamp loader replication factor C (RFC) and sliding clamp proliferating cell nuclear antigen (PCNA) are both essential and play critical roles in several diseases. Despite decades of study, no structure of human RFC has been resolved. Here, we report the structure of human RFC bound to PCNA by cryogenic electron microscopy to an overall resolution of ∼3.4 Å. The active sites of RFC are fully bound to adenosine 5'-triphosphate (ATP) analogs, which is expected to induce opening of the sliding clamp. However, we observe the complex in a conformation before PCNA opening, with the clamp loader ATPase modules forming an overtwisted spiral that is incapable of binding DNA or hydrolyzing ATP. The autoinhibited conformation observed here has many similarities to a previous yeast RFC:PCNA crystal structure, suggesting that eukaryotic clamp loaders adopt a similar autoinhibited state early on in clamp loading. Our results point to a "limited change/induced fit" mechanism in which the clamp first opens, followed by DNA binding, inducing opening of the loader to release autoinhibition. The proposed change from an overtwisted to an active conformation reveals an additional regulatory mechanism for AAA+ ATPases. Finally, our structural analysis of disease mutations leads to a mechanistic explanation for the role of RFC in human health.
全体 : Human Replication factor C (RFC) complex bound to the sliding cla...
全体
名称: Human Replication factor C (RFC) complex bound to the sliding clamp Proliferating cell nuclear antigen (PCNA)
要素
複合体: Human Replication factor C (RFC) complex bound to the sliding clamp Proliferating cell nuclear antigen (PCNA)
タンパク質・ペプチド: Replication factor C subunit 1
タンパク質・ペプチド: Replication factor C subunit 2
タンパク質・ペプチド: Replication factor C subunit 5
タンパク質・ペプチド: Replication factor C subunit 4
タンパク質・ペプチド: Replication factor C subunit 3
タンパク質・ペプチド: Proliferating cell nuclear antigen
リガンド: MAGNESIUM ION
リガンド: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
リガンド: ADENOSINE-5'-DIPHOSPHATE
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超分子 #1: Human Replication factor C (RFC) complex bound to the sliding cla...
超分子
名称: Human Replication factor C (RFC) complex bound to the sliding clamp Proliferating cell nuclear antigen (PCNA) タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#6 詳細: hRFC construct with a truncation of the A subunit's N-terminal region (missing residues 1-555)