6u6y

Human SAMHD1 bound to ribo(CGCCU)-oligonucleotide

Method: X-RAY DIFFRACTION Dmax: 118.7 Å Quality: GOOD

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

Deoxynucleoside triphosphate triphosphohydrolase SAMHD1

Homo sapiens

UniProt Q9Y3Z3

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–RNA Homooligomer Protein × 2 RNA 2 PDB declaration: tetrameric(4) Consistent with all polymer counts Chain A; UniProt 114–626 Chain D; UniProt 114–626 Mutation:D311A RNA CGCCU × 2 ZN ZINC ION × 2 DTP 2'-DEOXYADENOSINE 5'-TRIPHOSPHATE × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;295 K;20% PEG 4000, 0.6 M NaCl, 0.1 M MES:NaOH pH 6.5 Resolution 2.47 Å R-free 0.235
2 Protein–RNA Homooligomer Protein × 2 RNA 2 PDB declaration: tetrameric(4) Consistent with all polymer counts Chain B; UniProt 114–626 Chain C; UniProt 114–626 Mutation:D311A RNA CGCCU × 2 ZN ZINC ION × 2 DTP 2'-DEOXYADENOSINE 5'-TRIPHOSPHATE × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;295 K;20% PEG 4000, 0.6 M NaCl, 0.1 M MES:NaOH pH 6.5 Resolution 2.47 Å R-free 0.235

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.

75 other PDB entries and 104 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name SAMH1_HUMAN
Isoform
PDB entities 1
Chains and sequence ranges Author chain A; PDBConstruct 21–533; UniProt 114–626 Author chain B; PDBConstruct 21–533; UniProt 114–626 Author chain C; PDBConstruct 21–533; UniProt 114–626 Author chain D; PDBConstruct 21–533; UniProt 114–626

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 6u6y

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6u6y
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6u6y
Deposition date deposition_date2019-08-30
Structure title titleHuman SAMHD1 bound to ribo(CGCCU)-oligonucleotide
Keywords keywordsSAMHD1, HIV, restriction factor, innate immunity, dNTPase, ribo-oligonucleotide, hydrolase; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier37.98
Radius of gyration Rg (electron density) rg_electron37.62
Forward intensity I(0) i0630533000.00
Molecular weight molecular_weight205390.0 kDa
Excluded volume excluded_volume256880 ų
Envelope volume envelope_volume329930 ų
Hydration-shell volume shell_volume69230 ų
Envelope diameter envelope_diameter120.6
Shell Rg shell_rg46.72
Envelope Rg envelope_rg37.29
Shape Rg shape_rg37.60
Total Rg total_rg38.21
Total atoms total_atoms14442
Residues n_residues1747
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 dmax118.7
Rg (real space) rg_real37.76
Rg uncertainty (real space) rg_real_error0.57
I(0) (real space) i0_real6.3050e+08
I(0) uncertainty (real space) i0_real_error9.2490e+06
Rg (reciprocal space) rg_reciprocal37.90
I(0) (reciprocal space) i0_reciprocal630600000.0000
Solution quality estimate total_estimate0.8998
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary48.0
Skewness Skewness skewness0.159
Kurtosis Kurtosis kurtosis-0.514
Angular range angular_range— – 0.2100 −1
Current regularization parameter α current_alpha0.0001
Highest regularization parameter α highest_alpha140400000.0000
Real-space data points n_real_points43
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.923; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.979; Smooth: 0.946

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

8. Citations (1)

9. Files and Curves (10)