8tdw

ssRNA bound SAMHD1 T open

Method: ELECTRON MICROSCOPY Dmax: 121.8 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–RNA Homooligomer Protein × 4 RNA 2 PDB declaration: hexameric(6) Consistent with all polymer counts Chain A; UniProt 1–626 Chain B; UniProt 1–626 Chain E; UniProt 1–626 Chain F; UniProt 1–626 Not recorded ;RNA (5'-R(P*CP*CP*GP*GP*CP*C)-3') ; × 1 ;RNA (5'-R(P*CP*CP*GP*AP*CP*C)-3') ; × 1 FE FE (III) ION × 2 ELECTRON MICROSCOPY cryo-EM buffer:pH 7.5 cryo-EM vitrification conditions:Cryogen ETHANE Resolution 3.04 Å

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 1–626; UniProt 1–626 Author chain B; PDBConstruct 1–626; UniProt 1–626 Author chain E; PDBConstruct 1–626; UniProt 1–626 Author chain F; PDBConstruct 1–626; UniProt 1–626

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 8tdw

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 8tdw
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2. Structure Basics 2. Structure Basics

Entry ID entry_id8tdw
Deposition date deposition_date2023-07-05
Structure title titlessRNA bound SAMHD1 T open
Keywords keywordsDeoxynucleoside triphosphate triphosphohydrolase, HYDROLASE; HYDROLASE
Experimental Method methodELECTRON MICROSCOPY

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

Radius of gyration Rg (Guinier) rg_guinier40.59
Radius of gyration Rg (electron density) rg_electron39.77
Forward intensity I(0) i0487095000.00
Molecular weight molecular_weight160270.0 kDa
Excluded volume excluded_volume191560 ų
Envelope volume envelope_volume328110 ų
Hydration-shell volume shell_volume66135 ų
Envelope diameter envelope_diameter123.2
Shell Rg shell_rg47.81
Envelope Rg envelope_rg39.18
Shape Rg shape_rg39.83
Total Rg total_rg40.03
Total atoms total_atoms11359
Residues n_residues1842
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 dmax121.8
Rg (real space) rg_real40.43
Rg uncertainty (real space) rg_real_error0.94
I(0) (real space) i0_real4.8710e+08
I(0) uncertainty (real space) i0_real_error7.7400e+06
Rg (reciprocal space) rg_reciprocal40.59
I(0) (reciprocal space) i0_reciprocal487200000.0000
Solution quality estimate total_estimate0.8934
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary46.9
Skewness Skewness skewness0.127
Kurtosis Kurtosis kurtosis-0.659
Angular range angular_range— – 0.1950 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha74370000.0000
Real-space data points n_real_points40
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.979; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.993; Smooth: 0.684

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (4)

8. Citations (1)

9. Files and Curves (10)