5il1

X-ray diffraction
1.71Å resolution

Crystal structure of SAM-bound METTL3-METTL14 complex

Released:

Function and Biology Details

Reactions catalysed:
S-adenosyl-L-methionine + adenine in mRNA = S-adenosyl-L-homocysteine + N(6)-methyladenine in mRNA
S-adenosyl-L-methionine + a 5-(N(7)-methyl 5-triphosphoguanosine)-2'-O-methyladenosine-[mRNA] = S-adenosyl-L-homocysteine + a 5-(N(7)-methyl 5-triphosphoguanosine)-N(6),2'-O-dimethyladenosine-[mRNA]
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
PDBe Complex ID:
PDB-CPX-183176 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
N6-adenosine-methyltransferase catalytic subunit Chain: A
Molecule details ›
Chain: A
Length: 212 amino acids
Theoretical weight: 24.43 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q86U44 (Residues: 369-580; Coverage: 37%)
Gene names: METTL3, MTA70
Sequence domains: MT-A70
N6-adenosine-methyltransferase non-catalytic subunit Chain: B
Molecule details ›
Chain: B
Length: 300 amino acids
Theoretical weight: 34.79 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q9HCE5 (Residues: 109-408; Coverage: 66%)
Gene names: KIAA1627, METTL14
Sequence domains: MT-A70

Ligands and Environments


Cofactor: Ligand SAM 1 x SAM
1 bound ligand:
1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRF BEAMLINE BL19U1
Spacegroup: P41212
Unit cell:
a: 102.344Å b: 102.344Å c: 116.72Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.181 0.18 0.207
Expression system: Escherichia coli BL21(DE3)