6dw5

SAMHD1 Bound to Gemcitabine-TP in the Catalytic Pocket

Method: X-RAY DIFFRACTION Dmax: 108.8 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 homooligomer Homooligomer Protein × 4 PDB declaration: tetrameric(4) Consistent with protein copy count Chain A; UniProt 113–626 Chain B; UniProt 113–626 Chain C; UniProt 113–626 Chain D; UniProt 113–626 Mutation:H206R, D207N GTF 2'-deoxy-2',2'-difluorocytidine 5'-(tetrahydrogen triphosphate) × 4 GTP GUANOSINE-5'-TRIPHOSPHATE × 4 DTP 2'-DEOXYADENOSINE 5'-TRIPHOSPHATE × 4 MG MAGNESIUM ION × 10 NA SODIUM ION × 4 NI NICKEL (II) ION × 1 X-RAY DIFFRACTION X-ray crystallization conditions:MICROBATCH;298 K;100 MM BIS-TRIS PH 6.7 AND 25% (W/V) PEG1500 Resolution 1.93 Å R-free 0.205

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 37–550; UniProt 113–626 Author chain B; PDBConstruct 37–550; UniProt 113–626 Author chain C; PDBConstruct 37–550; UniProt 113–626 Author chain D; PDBConstruct 37–550; UniProt 113–626

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 6dw5

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 6dw5
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2. Structure Basics 2. Structure Basics

Entry ID entry_id6dw5
Deposition date deposition_date2018-06-26
Structure title titleSAMHD1 Bound to Gemcitabine-TP in the Catalytic Pocket
Keywords keywords;Complex, deoxynucleoside triphosphate triphosphohydrolase, dNTPase, nucleotide analogue, Gemcitabine-TP, HYDROLASE, hydrolase-hydrolase inhibitor complex ;; hydrolase/hydrolase inhibitor
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier35.97
Radius of gyration Rg (electron density) rg_electron35.54
Forward intensity I(0) i0800546000.00
Molecular weight molecular_weight228020.0 kDa
Excluded volume excluded_volume283960 ų
Envelope volume envelope_volume347670 ų
Hydration-shell volume shell_volume74903 ų
Envelope diameter envelope_diameter112.1
Shell Rg shell_rg45.98
Envelope Rg envelope_rg35.70
Shape Rg shape_rg35.52
Total Rg total_rg36.19
Total atoms total_atoms15999
Residues n_residues1910
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 dmax108.8
Rg (real space) rg_real35.70
Rg uncertainty (real space) rg_real_error0.56
I(0) (real space) i0_real8.0050e+08
I(0) uncertainty (real space) i0_real_error1.2430e+07
Rg (reciprocal space) rg_reciprocal35.87
I(0) (reciprocal space) i0_reciprocal800700000.0000
Solution quality estimate total_estimate0.8244
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks1
Primary peak position r_peak_primary47.0
Skewness Skewness skewness0.090
Kurtosis Kurtosis kurtosis-0.508
Angular range angular_range— – 0.2200 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha523800000.0000
Real-space data points n_real_points45
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.917; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.962; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (8)

8. Citations (1)

9. Files and Curves (10)