7sa7

Crystal structure of the apo SH2 domains of Syk

Method: X-RAY DIFFRACTION Dmax: 130.3 Å Quality: REASONABLE

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

Tyrosine-protein kinase SYK

Homo sapiens

UniProt P43405

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 6–269 Not recorded No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;293 K;Protein- 35mg/mL in 10mM HEPES pH 7.0, 50mM NaCl, 5% glycerol and 1mM TCEP Crystal conditions-0.2M sodium nitrate and 10% w/v PEG 3350 Cryoprotectant-0.2M sodium nitrate, 20% PEG 3350, and 20% glycerol Resolution 3.20 Å R-free 0.304
2 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain B; UniProt 6–269 Not recorded No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;293 K;Protein- 35mg/mL in 10mM HEPES pH 7.0, 50mM NaCl, 5% glycerol and 1mM TCEP Crystal conditions-0.2M sodium nitrate and 10% w/v PEG 3350 Cryoprotectant-0.2M sodium nitrate, 20% PEG 3350, and 20% glycerol Resolution 3.20 Å R-free 0.304
3 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain C; UniProt 6–269 Not recorded No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;293 K;Protein- 35mg/mL in 10mM HEPES pH 7.0, 50mM NaCl, 5% glycerol and 1mM TCEP Crystal conditions-0.2M sodium nitrate and 10% w/v PEG 3350 Cryoprotectant-0.2M sodium nitrate, 20% PEG 3350, and 20% glycerol Resolution 3.20 Å R-free 0.304
4 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain D; UniProt 6–269 Not recorded No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;293 K;Protein- 35mg/mL in 10mM HEPES pH 7.0, 50mM NaCl, 5% glycerol and 1mM TCEP Crystal conditions-0.2M sodium nitrate and 10% w/v PEG 3350 Cryoprotectant-0.2M sodium nitrate, 20% PEG 3350, and 20% glycerol Resolution 3.20 Å R-free 0.304
5 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain E; UniProt 6–269 Not recorded No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;293 K;Protein- 35mg/mL in 10mM HEPES pH 7.0, 50mM NaCl, 5% glycerol and 1mM TCEP Crystal conditions-0.2M sodium nitrate and 10% w/v PEG 3350 Cryoprotectant-0.2M sodium nitrate, 20% PEG 3350, and 20% glycerol Resolution 3.20 Å R-free 0.304
6 Protein monomer Monomer Protein × 1 PDB declaration: monomeric(1) Consistent with protein copy count Chain F; UniProt 6–269 Not recorded No other associated polymer X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, HANGING DROP;pH 7;293 K;Protein- 35mg/mL in 10mM HEPES pH 7.0, 50mM NaCl, 5% glycerol and 1mM TCEP Crystal conditions-0.2M sodium nitrate and 10% w/v PEG 3350 Cryoprotectant-0.2M sodium nitrate, 20% PEG 3350, and 20% glycerol Resolution 3.20 Å R-free 0.304

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.

92 other PDB entries and 129 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name KSYK_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 4–267; UniProt 6–269 Author chain B; PDBConstruct 4–267; UniProt 6–269 Author chain C; PDBConstruct 4–267; UniProt 6–269 Author chain D; PDBConstruct 4–267; UniProt 6–269 Author chain E; PDBConstruct 4–267; UniProt 6–269 Author chain F; PDBConstruct 4–267; UniProt 6–269

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 7sa7

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7sa7
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7sa7
Deposition date deposition_date2021-09-22
Structure title titleCrystal structure of the apo SH2 domains of Syk
Keywords keywordskinase, SH2 domain, TRANSFERASE; TRANSFERASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier42.08
Radius of gyration Rg (electron density) rg_electron41.76
Forward intensity I(0) i0388291000.00
Molecular weight molecular_weight159920.0 kDa
Excluded volume excluded_volume200080 ų
Envelope volume envelope_volume312000 ų
Hydration-shell volume shell_volume62969 ų
Envelope diameter envelope_diameter139.3
Shell Rg shell_rg47.36
Envelope Rg envelope_rg39.61
Shape Rg shape_rg41.73
Total Rg total_rg42.20
Total atoms total_atoms11296
Residues n_residues1427
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 dmax130.3
Rg (real space) rg_real41.83
Rg uncertainty (real space) rg_real_error0.98
I(0) (real space) i0_real3.8830e+08
I(0) uncertainty (real space) i0_real_error6.5930e+06
Rg (reciprocal space) rg_reciprocal42.08
I(0) (reciprocal space) i0_reciprocal388400000.0000
Solution quality estimate total_estimate0.6684
Solution quality rating solution_quality REASONABLE a REASONABLE solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary54.9
Skewness Skewness skewness0.047
Kurtosis Kurtosis kurtosis-0.425
Angular range angular_range— – 0.1900 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha17400000.0000
Real-space data points n_real_points39
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.891; Stabil: 1.000; Sysdev: 0.046; Positv: 1.000; Valcen: 0.966; Smooth: 0.908

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (2)

7. Fold Classification (SCOP + CATH) 3 domains

CATH v4.4 (3 domains)

Domain ID domain_id7sa7D01
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology505 — SHC Adaptor Protein
Homologous superfamily homologous superfamily10 — SH2 domain
Domain ID domain_id7sa7E01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology930 — Syk Kinase; Chain A, domain 2
Homologous superfamily homologous superfamily10 — Syk Kinase; Chain A, domain 2
Domain ID domain_id7sa7E02
Class class3 — Alpha Beta
Architecture architecture30 — 2-Layer Sandwich
Topology topology505 — SHC Adaptor Protein
Homologous superfamily homologous superfamily10 — SH2 domain

8. Citations (2)

9. Files and Curves (10)