8YRS

Crystal structure of human RECQ1 helicase containing a flexible linker in complex with tailed duplex DNA

• PDB DOI: https://doi.org/10.2210/pdb8YRS/pdb
• NAKB: 8YRS

• Classification: DNA BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-03-21 Released: 2024-09-04 
• Deposition Author(s): Das, T., Das, A.K., Ganguly, A.
• Funding Organization(s): Science and Engineering Research Board (SERB)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.43 Å
• R-Value Free: 0.257 
• R-Value Work: 0.237 
• R-Value Observed: 0.239 

Starting Model: experimental

Literature

Crystal structure of human RECQ1 helicase containing a flexible linker in complex with tailed duplex DNA

Das, T., Das, A.K., Ganguly, A.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 159.32 kDa 
• Atom Count: 9,835 
• Modelled Residue Count: 1,129 
• Deposited Residue Count: 1,278 
• Unique protein chains: 1
• Unique nucleic acid chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ATP-dependent DNA helicase Q1	A, B	599	Homo sapiens	Mutation(s): 0  Gene Names: RECQL, RECQ1, RECQL1 EC: 3.6.4.12
UniProt & NIH Common Fund Data Resources
Find proteins for P46063 (Homo sapiens) Explore P46063  Go to UniProtKB:  P46063
PHAROS:  P46063 GTEx:  ENSG00000004700

Entity ID: 2
Molecule	Chains	Length	Organism	Image
DNA (5'-D(*AP*GP*CP*GP*TP*CP*GP*AP*GP*AP*TP*CP*C)-3')	C, E [auth P]	13	Homo sapiens

Entity ID: 3
Molecule	Chains	Length	Organism	Image
DNA (27-MER)	D, F [auth Q]	27	Homo sapiens

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	G [auth A], H [auth B]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.43 Å
• R-Value Free: 0.257 
• R-Value Work: 0.237 
• R-Value Observed: 0.239 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 83.323	α = 90
b = 96.573	β = 106.88
c = 96.806	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
STARANISO	data scaling
Aimless	data scaling
XDS	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-09-04 
Deposition Author(s): Das, T., Das, A.K., Ganguly, A.

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Funding Organization	Location	Grant Number
Science and Engineering Research Board (SERB)	India	CRG/2022/005602

Revision History  

• Version 1.0: 2024-09-04
  Type: Initial release