7STB | pdb_00007stb

Closed state of Rad24-RFC:9-1-1 bound to a 5' ss/dsDNA junction


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.72 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Starting Models: experimental
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wwPDB Validation 3D Report Full Report

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This is version 1.3 of the entry. See complete history

Literature

Mechanisms of loading and release of the 9-1-1 checkpoint clamp.

Castaneda, J.C.Schrecker, M.Remus, D.Hite, R.K.

(2022) Nat Struct Mol Biol 29: 369-375

  • DOI: https://doi.org/10.1038/s41594-022-00741-7
  • Primary Citation Related Structures: 
    7ST9, 7STB, 7STE

  • PubMed Abstract: 

    Single-stranded or double-stranded DNA junctions with recessed 5' ends serve as loading sites for the checkpoint clamp, 9-1-1, which mediates activation of the apical checkpoint kinase, ATR Mec1 . However, the basis for 9-1-1's recruitment to 5' junctions is unclear. Here, we present structures of the yeast checkpoint clamp loader, Rad24-replication factor C (RFC), in complex with 9-1-1 and a 5' junction and in a post-ATP-hydrolysis state. Unexpectedly, 9-1-1 adopts both closed and planar open states in the presence of Rad24-RFC and DNA. Moreover, Rad24-RFC associates with the DNA junction in the opposite orientation of processivity clamp loaders with Rad24 exclusively coordinating the double-stranded region. ATP hydrolysis stimulates conformational changes in Rad24-RFC, leading to disengagement of DNA-loaded 9-1-1. Together, these structures explain 9-1-1's recruitment to 5' junctions and reveal new principles of sliding clamp loading.


  • Organizational Affiliation
    • Molecular Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.

Macromolecule Content 

  • Total Structure Weight: 431.36 kDa 
  • Atom Count: 22,814 
  • Modeled Residue Count: 2,789 
  • Deposited Residue Count: 3,658 
  • Unique protein chains: 8
  • Unique nucleic acid chains: 2

Macromolecules


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Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Checkpoint protein RAD24696Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RAD24YER173WSYGP-ORF60
UniProt
Find proteins for P32641 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P32641 
Go to UniProtKB:  P32641
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UniProt GroupP32641
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Reference Sequence
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Entity ID: 2
MoleculeChains  Sequence LengthOrganismDetailsImage
Replication factor C subunit 4323Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RFC4YOL094CO0923
UniProt
Find proteins for P40339 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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UniProt GroupP40339
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Reference Sequence
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Entity ID: 3
MoleculeChains  Sequence LengthOrganismDetailsImage
Replication factor C subunit 3340Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RFC3YNL290WN0533
UniProt
Find proteins for P38629 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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UniProt GroupP38629
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Reference Sequence
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Entity ID: 4
MoleculeChains  Sequence LengthOrganismDetailsImage
Replication factor C subunit 2353Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RFC2YJR068WJ1808
UniProt
Find proteins for P40348 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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Go to UniProtKB:  P40348
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UniProt GroupP40348
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Reference Sequence
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Entity ID: 5
MoleculeChains  Sequence LengthOrganismDetailsImage
Replication factor C subunit 5354Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RFC5YBR087WYBR0810
UniProt
Find proteins for P38251 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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UniProt GroupP38251
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Reference Sequence
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Entity ID: 6
MoleculeChains  Sequence LengthOrganismDetailsImage
DNA damage checkpoint control protein RAD17401Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: RAD17YOR368W
UniProt
Find proteins for P48581 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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UniProt GroupP48581
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Reference Sequence
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Entity ID: 7
MoleculeChains  Sequence LengthOrganismDetailsImage
DNA damage checkpoint protein 1646Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: DDC1YPL194W
UniProt
Find proteins for Q08949 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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UniProt GroupQ08949
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Reference Sequence
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Entity ID: 8
MoleculeChains  Sequence LengthOrganismDetailsImage
DNA damage checkpoint control protein MEC3474Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: MEC3PIP3PSO9YLR288CL8003.15
UniProt
Find proteins for Q02574 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
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UniProt GroupQ02574
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Reference Sequence
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Entity ID: 9
MoleculeChains LengthOrganismImage
DNA (50-MER)I [auth J]50Saccharomyces cerevisiae
Sequence Annotations
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Reference Sequence
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Entity ID: 10
MoleculeChains LengthOrganismImage
DNA (5'-D(P*CP*GP*CP*TP*CP*CP*TP*TP*CP*CP*TP*GP*AP*CP*TP*CP*GP*TP*CP*C)-3')J [auth I]21Saccharomyces cerevisiae
Sequence Annotations
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Reference Sequence

Small Molecules

Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
AGS
(Subject of Investigation/LOI)

Query on AGS



Download:Ideal Coordinates CCD File
K [auth A],
N [auth B],
P [auth C],
R [auth D]
PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
C10 H16 N5 O12 P3 S
NLTUCYMLOPLUHL-KQYNXXCUSA-N
ADP
(Subject of Investigation/LOI)

Query on ADP



Download:Ideal Coordinates CCD File
S [auth E]ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
MG
(Subject of Investigation/LOI)

Query on MG



Download:Ideal Coordinates CCD File
L [auth A],
M [auth B],
O [auth C],
Q [auth D]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.72 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX
RECONSTRUCTIONcryoSPARC

Structure Validation

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Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM107239
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM127428
National Institutes of Health/National Cancer Institute (NIH/NCI)CA008748

Revision History  (Full details and data files)

  • Version 1.0: 2022-03-23
    Type: Initial release
  • Version 1.1: 2022-04-06
    Changes: Database references
  • Version 1.2: 2022-04-27
    Changes: Database references
  • Version 1.3: 2024-06-05
    Changes: Data collection, Refinement description