5ao0

Crystal structure of human SAMHD1 (amino acid residues 41-583) bound to ddGTP

Method: X-RAY DIFFRACTION Dmax: 92.6 Å Quality: EXCELLENT

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 homooligomer Homooligomer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 41–583 Chain B; UniProt 41–583 Fragment:RESIDUES 41-583 FE FE (III) ION × 4 DG3 2'-3'-DIDEOXYGUANOSINE-5'-TRIPHOSPHATE × 8 MG MAGNESIUM ION × 4 X-RAY DIFFRACTION X-ray crystallization conditions:160 MM SUCCINIC ACID, 11% PEG 3350, PH 7 Resolution 3.73 Å R-free 0.268

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 105 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 23–565; UniProt 41–583 Author chain B; PDBConstruct 23–565; UniProt 41–583

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 5ao0

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 5ao0
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2. Structure Basics 2. Structure Basics

Entry ID entry_id5ao0
Deposition date deposition_date2015-09-09
Structure title titleCrystal structure of human SAMHD1 (amino acid residues 41-583) bound to ddGTP
Keywords keywordsHYDROLASE, DEOXYNUCLEOSIDE, DEOXYNUCLEOSIDE TRIPHOSPHATE TRIPHOSPHOHYDROLASE, HIV RESTRICTION FACTOR; HYDROLASE
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier29.40
Radius of gyration Rg (electron density) rg_electron28.63
Forward intensity I(0) i0158302000.00
Molecular weight molecular_weight98093.0 kDa
Excluded volume excluded_volume121650 ų
Envelope volume envelope_volume147910 ų
Hydration-shell volume shell_volume41610 ų
Envelope diameter envelope_diameter100.9
Shell Rg shell_rg37.16
Envelope Rg envelope_rg29.16
Shape Rg shape_rg28.64
Total Rg total_rg29.34
Total atoms total_atoms6903
Residues n_residues874
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 dmax92.6
Rg (real space) rg_real29.28
Rg uncertainty (real space) rg_real_error0.43
I(0) (real space) i0_real1.5830e+08
I(0) uncertainty (real space) i0_real_error2.4160e+06
Rg (reciprocal space) rg_reciprocal29.34
I(0) (reciprocal space) i0_reciprocal158300000.0000
Solution quality estimate total_estimate0.9036
Solution quality rating solution_quality EXCELLENT a EXCELLENT solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary36.0
Skewness Skewness skewness0.212
Kurtosis Kurtosis kurtosis-0.464
Angular range angular_range— – 0.2700 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha39730000.0000
Real-space data points n_real_points55
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.920; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.992; Smooth: 0.991

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 2 domains

CATH v4.4 (2 domains)

Domain ID domain_id5ao0A01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology3210 — Hypothetical protein af1432
Homologous superfamily homologous superfamily10 — Hypothetical protein af1432
Domain ID domain_id5ao0B01
Class class1 — Mainly Alpha
Architecture architecture10 — Orthogonal Bundle
Topology topology3210 — Hypothetical protein af1432
Homologous superfamily homologous superfamily10 — Hypothetical protein af1432

8. Citations (1)

9. Files and Curves (10)