3ksy

Crystal structure of the Histone domain, DH-PH unit, and catalytic unit of the Ras activator Son of Sevenless (SOS)

Method: X-RAY DIFFRACTION Dmax: 134.7 Å Quality: GOOD

1. Protein Identity and Related Structures Protein Identity & Related Structures

Son of sevenless homolog 1

Homo sapiens

UniProt Q07889

State in the Current Structure

Assembly Oligomeric State Construct Mutations and Modifications Ligands, Ions and Associated Components Method and Experimental Conditions Structure Quality
1 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain A; UniProt 1–1049 Fragment:SOS-HDPC, (UNP residues 1-1049) No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;Crystals of SOS-HDPC (residues 1-1049) were grown at room temperature using hanging-drop vapor diffusion by mixing equal volumes of protein (20 mg/ml) and reservoir solutions (140-190 mM sodium thiocyanate, 14%-16% PEG 3350, and 0.1 M SPG (Succinic acid, Phosphate, Glycine) buffer [pH 6.0 or 6.5]). , VAPOR DIFFUSION, HANGING DROP Resolution 3.18 Å R-free 0.312
2 Protein homooligomer Homooligomer Protein × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 1–1049 Fragment:SOS-HDPC, (UNP residues 1-1049) No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;Crystals of SOS-HDPC (residues 1-1049) were grown at room temperature using hanging-drop vapor diffusion by mixing equal volumes of protein (20 mg/ml) and reservoir solutions (140-190 mM sodium thiocyanate, 14%-16% PEG 3350, and 0.1 M SPG (Succinic acid, Phosphate, Glycine) buffer [pH 6.0 or 6.5]). , VAPOR DIFFUSION, HANGING DROP Resolution 3.18 Å R-free 0.312

Other States of the Same Protein in the Database

Each row is a biological assembly of the same UniProt protein in another PDB entry. The “Difference from current entry” column identifies evidence-level differences; no tag means the currently parsed fields agree.

90 other PDB entries and 114 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name SOS1_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 1–1049; UniProt 1–1049

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

SAXS scattering curve SAXS Profile

SAXS profile for 3ksy

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 3ksy
Download Download

2. Structure Basics 2. Structure Basics

Entry ID entry_id3ksy
Deposition date deposition_date2009-11-24
Structure title titleCrystal structure of the Histone domain, DH-PH unit, and catalytic unit of the Ras activator Son of Sevenless (SOS)
Keywords keywordsRas, SOS, Ras activator, Son of Sevenless, Disease mutation, Guanine-nucleotide releasing factor, SIGNALING PROTEIN; SIGNALING PROTEIN
Experimental Method methodX-RAY DIFFRACTION

3. SAXS Parameters (CRYSOL theoretical calculation) 3. SAXS Parameters (CRYSOL)

Radius of gyration Rg (Guinier) rg_guinier39.62
Radius of gyration Rg (electron density) rg_electron39.53
Forward intensity I(0) i0201587000.00
Molecular weight molecular_weight116870.0 kDa
Excluded volume excluded_volume147230 ų
Envelope volume envelope_volume211710 ų
Hydration-shell volume shell_volume46515 ų
Envelope diameter envelope_diameter142.8
Shell Rg shell_rg43.21
Envelope Rg envelope_rg38.79
Shape Rg shape_rg39.54
Total Rg total_rg39.74
Total atoms total_atoms8234
Residues n_residues1007
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 −1
Data points n_points101
Shell type shell_typedirectional
Solvent electron density solvent_density0.3340 e/ų
Shell contrast contrast_shell0.0300 e/ų
CRYSOL version crysol_version4.1.3

4. P(r) Distance Distribution (GNOM inversion) 4. P(r) Analysis (GNOM)

Maximum dimension Dmax dmax134.7
Rg (real space) rg_real39.88
Rg uncertainty (real space) rg_real_error1.30
I(0) (real space) i0_real2.0160e+08
I(0) uncertainty (real space) i0_real_error3.5180e+06
Rg (reciprocal space) rg_reciprocal39.73
I(0) (reciprocal space) i0_reciprocal201600000.0000
Solution quality estimate total_estimate0.8643
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary40.4
Skewness Skewness skewness0.442
Kurtosis Kurtosis kurtosis-0.416
Angular range angular_range— – 0.2000 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha30200000.0000
Real-space data points n_real_points41
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.843; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.903; Smooth: 0.798

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (1)

7. Fold Classification (SCOP + CATH) 6 domains

CATH v4.4 (6 domains)

Domain ID domain_id3ksyA01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology20 — Histone, subunit A
Homologous superfamily homologous superfamily10 — Histone, subunit A
Domain ID domain_id3ksyA02
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology900 — Dbl Homology Domain; Chain A
Homologous superfamily homologous superfamily10 — Dbl homology (DH) domain
Domain ID domain_id3ksyA03
Class class2 — Mainly Beta
Architecture architecture30 — Roll
Topology topology29 — PH-domain like
Homologous superfamily homologous superfamily30 — Pleckstrin-homology domain (PH domain)/Phosphotyrosine-binding domain (PTB)
Domain ID domain_id3ksyA04
Class class6 — Special
Architecture architecture10 — Helix non-globular
Topology topology250 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily3060
Domain ID domain_id3ksyA05
Class class1 — Mainly Alpha
Architecture architecture20 — Up-down Bundle
Topology topology870 — Son of sevenless (SoS) protein; Chain S, domain 1
Homologous superfamily homologous superfamily10 — Son of sevenless (SoS) protein Chain: S domain 1
Domain ID domain_id3ksyA06
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology840 — Son of Sevenless (SoS) protein; Chain S, domain 2
Homologous superfamily homologous superfamily10 — Ras guanine-nucleotide exchange factors catalytic domain

8. Citations (1)

9. Files and Curves (10)