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9s1a

WRN helicase in the absence of nucleotide or DNA

Method: X-RAY DIFFRACTION D_max: 92.8 Å Quality: EXCELLENT

SAXS Profile

P(r) Distribution

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1. Structure Basics

entry_id	9s1a
deposition_date	2025-07-18
last_revision	2026-05-27
title	WRN helicase in the absence of nucleotide or DNA
keywords	Inhibitor, Covalent, Helicase, allosteric, HYDROLASE; HYDROLASE
method	X-RAY DIFFRACTION

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Download Data

SAXS curve (.dat) P(r) distribution (.pr.out) Structure (CIF)

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2. SAXS Parameters (CRYSOL)

rg_guinier	29.91 Å
rg_electron	29.05 Å
i0	134693000.00
molecular_weight	90923.0 kDa
excluded_volume	113540 Å³
envelope_volume	137290 Å³
shell_volume	38917 Å³
envelope_diameter	99.3 Å
shell_rg	36.79 Å
envelope_rg	28.94 Å
shape_rg	29.02 Å
total_rg	29.82 Å
total_atoms	6343
n_residues	790
n_harmonics	20
q_range	— – 0.5000 Å⁻¹
n_points	101
shell_type	directional
solvent_density	0.3340 e/Å³
contrast_shell	0.0300 e/Å³
crysol_version	4.1.3

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3. P(r) Analysis (GNOM)

dmax	92.8 Å
rg_real	29.85 Å
rg_real_error	0.54 Å
i0_real	1.3470e+08
i0_real_error	1.9530e+06
rg_reciprocal	29.88 Å
i0_reciprocal	134700000.0000
total_estimate	0.9038
solution_quality	EXCELLENT a EXCELLENT solution
n_peaks	2
r_peak_primary	33.2 Å
skewness	0.281
kurtosis	-0.486
angular_range	— – 0.2650 Å⁻¹
current_alpha	0.0000
highest_alpha	37380000.0000
n_real_points	54
gnom_version	4.1.3
quality_criteria	AN1: 0.000; Oscil: 0.948; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 1.000; Smooth: 0.902

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4. Crystallography & Experiment

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5. Entities & Polymer Info (7)

Entity 1 polymer

description	;Bifunctional 3'-5' exonuclease/ATP-dependent helicase WRN ;
formula_weight	48597.1 kDa
ec_number	3.1.-.-,5.6.2.4
src_method	man
entity_count	2

Polymer

type	polypeptide(L)
strand_id	A,B
atom_count	6805

GMNEGEEDDDKDFLWPAPNEEQVTCLKMYFGHSSFKPVQWKVIHSVLEERRDNVAVMATGYGKSLCFQYPPVYVGKIGLVISPLISLMEDQVLQLKMSNIPACFLGSAQSENVLTDIKLGKYRIVYVTPEYCSGNMGLLQQLEADIGITLIAVDEAHCISEWGHDFRDSFRKLGSLKTALPMVPIVALTATASSSIREDIVRCLNLRNPQITCTGFDRPNLYLEVRRKTGNILQDLQPFLVKTSSHWEFEGPTIIYCPSRKMTQQVTGELRKLNLSCGTYHAGMSFSTRKDIHHRFVRDEIQCVIATIAFGMGINKADIRQVIHYGAPKDMESYYQEIGRAGRDGLQSSCHVLWAPADINLNRHLLTEIRNEKFRLYKLKMMAKMEKYLHSSRCRRQIILSHFEDKQVQKASLGIMGTEKCCDNCRS

Source

organism	Homo sapiens
common_name	human
ncbi_taxonomy_id	9606
host_organism	Spodoptera frugiperda

Entity 2 non-polymer

description	ZINC ION
formula_weight	65.4 kDa
src_method	syn
entity_count	2

Entity 3 non-polymer

description	SULFATE ION
formula_weight	96.1 kDa
src_method	syn
entity_count	5

Entity 4 non-polymer

description	1,2-ETHANEDIOL
formula_weight	62.1 kDa
src_method	syn
entity_count	8

Entity 5 non-polymer

description	DIMETHYL SULFOXIDE
formula_weight	78.1 kDa
src_method	syn
entity_count	2

Entity 6 non-polymer

description	GLYCEROL
formula_weight	92.1 kDa
src_method	syn
entity_count	2

Entity 7 water

description	water
formula_weight	18.0 kDa
src_method	nat
entity_count	341

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6. Citations (1)

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length_a	70.760 Å
length_b	80.240 Å
length_c	83.090 Å
angle_alpha	90.00 °
angle_beta	90.27 °
angle_gamma	90.00 °
z_pdb	4

space_group	P 1 21 1
int_tables_number	4
crystal_system	—

resolution	1.956 Å
resolution_low	57.720 Å
r_factor	0.2088
r_work	0.2068
r_free	0.2472

fit	/app/data/saxs_computation/s1/9s1a/9s1a.fit
pddf	/app/data/pr_computation/s1/9s1a/9s1a.pr.out
profile	/app/data/saxs_computation/s1/9s1a/9s1a.dat