← Back to search
7ezg

The structure of the human METTL6 enzyme in complex with SAH

Method: X-RAY DIFFRACTION Dmax: 63.7 Å Quality: GOOD
▼

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

tRNA N(3)-methylcytidine methyltransferase METTL6

Homo sapiens

UniProt Q8TCB7

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 monomer Monomer Protein × 1 PDB declaration: monomeric（1） Consistent with protein copy count Chain A； UniProt 1–284 Not recorded SAH S-ADENOSYL-L-HOMOCYSTEINE × 1 X-RAY DIFFRACTION X-ray crystallization conditions：VAPOR DIFFUSION, SITTING DROP；pH 9；298 K；PEGRX F7?25% PEG1500?0.1M BIS-Tris pH9.0?0.1M NaCl Resolution 1.90 Å R-free 0.201

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.

Other PDB Difference from Current Entry 7EZG Assembly / Oligomeric State Construct Mutations and Modifications Ligands, Ions and Non-polymers Method and Experimental Conditions Structure Quality
7F1E Structure of METTL6 bound with SAM Deposited 2021-06-09 Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 1–284（284 aa）
Not recorded SAM S-ADENOSYLMETHIONINE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；291 K；0.1M Sodium acetate pH5.2, 2.0M sodium formate
Resolution 2.59 Å R-free 0.227
7F1E Structure of METTL6 bound with SAM Deposited 2021-06-09 Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 1–284（284 aa）
Not recorded SAM S-ADENOSYLMETHIONINE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；291 K；0.1M Sodium acetate pH5.2, 2.0M sodium formate
Resolution 2.59 Å R-free 0.227
8OWX Crystal Structure of METTL6 bound to SAH Deposited 2023-04-28 Different construct Different ligand/ion Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 1–271（271 aa）
Not recorded SAH S-ADENOSYL-L-HOMOCYSTEINE × 1 B3P 2-[3-(2-HYDROXY-1,1-DIHYDROXYMETHYL-ETHYLAMINO)-PROPYLAMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；293.15 K；0.1 M BisTRIS propane pH 6.5, 0.2 M sodium sulfate, 20 % PEG3350
Resolution 2.60 Å R-free 0.250
8OWX Crystal Structure of METTL6 bound to SAH Deposited 2023-04-28 Different construct Different experimental conditions Different structure-quality metrics Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 1–271（271 aa）
Not recorded SAH S-ADENOSYL-L-HOMOCYSTEINE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, HANGING DROP；pH 6.5；293.15 K；0.1 M BisTRIS propane pH 6.5, 0.2 M sodium sulfate, 20 % PEG3350
Resolution 2.60 Å R-free 0.250
8OWY Crystal structure of METTL6 mutant 40-269 bound to SAH Deposited 2023-04-28 Different construct Different experimental conditions Different structure-quality metrics Assembly 1 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain A 40–269（230 aa）
Not recorded SAH S-ADENOSYL-L-HOMOCYSTEINE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；0.1 M BisTRIS, 0.2 M ammonium sulfate and 25% PEG3350
Resolution 3.20 Å R-free 0.300
8OWY Crystal structure of METTL6 mutant 40-269 bound to SAH Deposited 2023-04-28 Different construct Different experimental conditions Different structure-quality metrics Assembly 2 Protein monomer Monomer；Protein × 1 PDB declaration: monomeric
Chain B 40–269（230 aa）
Not recorded SAH S-ADENOSYL-L-HOMOCYSTEINE × 1 X-RAY DIFFRACTION
X-ray crystallization conditions VAPOR DIFFUSION, SITTING DROP；293.15 K；0.1 M BisTRIS, 0.2 M ammonium sulfate and 25% PEG3350
Resolution 3.20 Å R-free 0.300
8P7B CryoEM structure of METTL6 tRNA SerRS complex in a 1:2:2 stoichiometry Deposited 2023-05-30 Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein–RNA Heteromer；Protein × 3 PDB declaration: pentameric
Chain A 1–284（284 aa）
Not recorded SAH S-ADENOSYL-L-HOMOCYSTEINE × 1 MG MAGNESIUM ION × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 2.42 Å
8P7C CryoEM structure of METTL6 tRNA SerRS complex in a 2:2:2 stoichiometry Deposited 2023-05-30 Different construct Different mutation/modification Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein–RNA Heteromer；Protein × 4 PDB declaration: hexameric
Chain A 1–284（284 aa）
Chain C 1–284（284 aa）
Not recorded SAH S-ADENOSYL-L-HOMOCYSTEINE × 2 MG MAGNESIUM ION × 6 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 3.70 Å
8P7D CryoEM structure of METTL6 tRNA SerRS complex in a 1:1:2 stoichiometry Deposited 2023-05-30 Different oligomeric state Different ligand/ion Different experimental method Different experimental conditions Different structure-quality metrics Assembly 1 Protein–RNA Heteromer；Protein × 3 PDB declaration: tetrameric
Chain A 1–284（284 aa）
Not recorded SAH S-ADENOSYL-L-HOMOCYSTEINE × 1 MG MAGNESIUM ION × 3 ELECTRON MICROSCOPY
cryo-EM buffer pH 7.5
cryo-EM vitrification conditions Cryogen ETHANE
Resolution 4.20 Å

6 other PDB entries and 9 assemblies. Open the comparison page and filter oligomeric states

View Construct and Data Evidence
UniProt name METL6_HUMAN
Isoform —
PDB entities 1
Chains and sequence ranges Author chain A； PDBConstruct 22–305； UniProt 1–284

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 7ezg

P(r) Distance Distribution P(r) Distribution

P(r) distribution for 7ezg
Download Download
▼

2. Structure Basics 2. Structure Basics

Entry ID entry_id7ezg
Deposition date deposition_date2021-06-01
Structure title titleThe structure of the human METTL6 enzyme in complex with SAH
Keywords keywordsM3C, tRNA modifications, cocrystal, METTL6, TOXIN, Methyltransferase; Methyltransferase
Experimental Method methodX-RAY DIFFRACTION
▼

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

Radius of gyration Rg (Guinier) rg_guinier20.03 Å
Radius of gyration Rg (electron density) rg_electron18.85 Å
Forward intensity I(0) i017174600.00
Molecular weight molecular_weight31700.0 kDa
Excluded volume excluded_volume39754 ų
Envelope volume envelope_volume47079 ų
Hydration-shell volume shell_volume20573 ų
Envelope diameter envelope_diameter64.2 Å
Shell Rg shell_rg25.57 Å
Envelope Rg envelope_rg19.22 Å
Shape Rg shape_rg18.85 Å
Total Rg total_rg19.81 Å
Total atoms total_atoms2237
Residues n_residues275
Spherical-harmonic order n_harmonics20
q range q_range— – 0.5000 Å−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 dmax63.7 Å
Rg (real space) rg_real19.93 Å
Rg uncertainty (real space) rg_real_error0.32 Å
I(0) (real space) i0_real1.7170e+07
I(0) uncertainty (real space) i0_real_error2.0580e+05
Rg (reciprocal space) rg_reciprocal19.95 Å
I(0) (reciprocal space) i0_reciprocal17170000.0000
Solution quality estimate total_estimate0.8943
Solution quality rating solution_quality GOOD a GOOD solution
P(r) peaks n_peaks2
Primary peak position r_peak_primary25.5 Å
Skewness Skewness skewness0.182
Kurtosis Kurtosis kurtosis-0.397
Angular range angular_range— – 0.3950 Å−1
Current regularization parameter α current_alpha0.0000
Highest regularization parameter α highest_alpha3969000.0000
Real-space data points n_real_points71
GNOM version gnom_version4.1.3
Quality Criteria quality_criteria AN1: 0.000; Oscil: 0.883; Stabil: 1.000; Sysdev: 1.000; Positv: 1.000; Valcen: 0.991; Smooth: 0.982
▶

5. Crystallography and Experiment 5. Crystallography & Experiment

▶

6. Entities and Polymers Entities & Polymers (3)

▶

8. Citations (1)

▶

9. Files and Curves (10)