7c2i

Crystal structure of nsp16-nsp10 heterodimer from SARS-CoV-2 in complex with SAM (with additional SAM during crystallization)

Method: X-RAY DIFFRACTION Dmax: 75.9 Å Quality: GOOD

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

2'-O-methyltransferase

Severe acute respiratory syndrome coronavirus 2

UniProt P0DTD1

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 × 2 PDB declaration: dimeric(2) Consistent with protein copy count Chain A; UniProt 6799–7096 Chain B; UniProt 4254–4392 Fragment:nsp16 Fragment:nsp10 SAM S-ADENOSYLMETHIONINE × 1 ZN ZINC ION × 2 X-RAY DIFFRACTION X-ray crystallization conditions:VAPOR DIFFUSION, SITTING DROP;pH 6;291 K;0.4 M Sodium malonate, 0.1 M MES, and 0.5% w/v PEG 10000. Resolution 2.50 Å R-free 0.209

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.

3350 other PDB entries and 4324 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name R1AB_SARS2
Isoform
PDB entities 1, 2
Chains and sequence ranges Author chain A; PDBConstruct 8–305; UniProt 6799–7096 Author chain B; PDBConstruct 6–144; UniProt 4254–4392

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 7c2i

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7c2i
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2. Structure Basics 2. Structure Basics

Entry ID entry_id7c2i
Deposition date deposition_date2020-05-07
Structure title titleCrystal structure of nsp16-nsp10 heterodimer from SARS-CoV-2 in complex with SAM (with additional SAM during crystallization)
Keywords keywords;2'-O-Methylase, VIRAL PROTEIN ;; VIRAL PROTEIN
Experimental Method methodX-RAY DIFFRACTION

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

Radius of gyration Rg (Guinier) rg_guinier23.43
Radius of gyration Rg (electron density) rg_electron22.43
Forward intensity I(0) i036752300.00
Molecular weight molecular_weight46209.0 kDa
Excluded volume excluded_volume57580 ų
Envelope volume envelope_volume68912 ų
Hydration-shell volume shell_volume25507 ų
Envelope diameter envelope_diameter84.1
Shell Rg shell_rg29.60
Envelope Rg envelope_rg23.10
Shape Rg shape_rg22.39
Total Rg total_rg23.42
Total atoms total_atoms3225
Residues n_residues414
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 dmax75.9
Rg (real space) rg_real23.38
Rg uncertainty (real space) rg_real_error0.62
I(0) (real space) i0_real3.6750e+07
I(0) uncertainty (real space) i0_real_error5.5700e+05
Rg (reciprocal space) rg_reciprocal23.39
I(0) (reciprocal space) i0_reciprocal36750000.0000
Solution quality estimate total_estimate0.8164
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary28.0
Skewness Skewness skewness0.307
Kurtosis Kurtosis kurtosis-0.307
Angular range angular_range— – 0.3400 −1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha6086000.0000
Real-space data points n_real_points66
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.871; Stabil: 0.999; Sysdev: 1.000; Positv: 1.000; Valcen: 0.999; Smooth: 0.000

5. Crystallography and Experiment 5. Crystallography & Experiment

6. Entities and Polymers Entities & Polymers (5)

7. Fold Classification (SCOP + CATH) 3 domains

SCOP 2.08 (2 domains)

Domain ID domain_idd7c2ia_
Class classc — Alpha and beta proteins (a/b)
Fold Fold foldc.66 — S-adenosyl-L-methionine-dependent methyltransferases
Superfamily Superfamily superfamilyc.66.1 — S-adenosyl-L-methionine-dependent methyltransferases
Family Family familyc.66.1.25 — mRNA cap methylase
Domain ID domain_idd7c2ib_
Class classg — Small proteins
Fold Fold foldg.86 — Coronavirus NSP10-like
Superfamily Superfamily superfamilyg.86.1 — Coronavirus NSP10-like
Family Family familyg.86.1.1 — Coronavirus NSP10-like

CATH v4.4 (1 domains)

Domain ID domain_id7c2iA00
Class class3 — Alpha Beta
Architecture architecture40 — 3-Layer(aba) Sandwich
Topology topology50 — Rossmann fold
Homologous superfamily homologous superfamily150 — Vaccinia Virus protein VP39

8. Citations (1)

9. Files and Curves (10)