SMTL ID : 6j1o.1

Crystal structure of a SAM-dependent methyltransferase LepI from Aspergillus flavus

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.70 Å

Oligo State

homo-dimer

Ligands

2 x SAM: S-ADENOSYLMETHIONINE(Non-covalent)

SAM.1: 14 residues within 4Å: Chain A: L.193, G.227, G.228, G.229, D.252, L.253, V.256, H.274, N.275, F.276, H.277, R.291, L.292, I.293 10 PLIP interactions: 10 interactions with chain A Hydrogen bonds: A:G.227, A:N.275, A:F.276, A:R.291 Water bridges: A:A.233, A:R.291, A:R.291, A:R.291 Salt bridges: A:R.291 pi-Stacking: A:F.276 SAM.3: 14 residues within 4Å: Chain B: L.193, G.227, G.228, G.229, D.252, L.253, V.256, H.274, N.275, F.276, H.277, R.291, L.292, I.293 10 PLIP interactions: 10 interactions with chain B Hydrogen bonds: B:G.227, B:G.228, B:N.275, B:F.276 Water bridges: B:M.230, B:R.291, B:R.291, B:R.291 Salt bridges: B:R.291 pi-Stacking: B:F.276

2 x MTA: 5'-DEOXY-5'-METHYLTHIOADENOSINE(Non-covalent)

MTA.2: 10 residues within 4Å: Chain A: H.133, L.138, T.338, C.341, A.345, L.346 Chain B: V.44, M.45, S.48, L.49 3 PLIP interactions: 1 interactions with chain B, 2 interactions with chain A Water bridges: B:S.48 pi-Stacking: A:H.133 pi-Cation interactions: A:H.133 MTA.4: 7 residues within 4Å: Chain A: L.49 Chain B: H.133, L.138, F.176, F.189, C.341, L.346 2 PLIP interactions: 2 interactions with chain B pi-Cation interactions: B:H.133, B:H.133

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Sun, Q. et al., Deciphering the regulatory and catalytic mechanisms of an unusual SAM-dependent enzyme. Signal Transduct Target Ther (2019)

Release Date

2019-05-01

Peptides

O-methyltransferase lepI: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

O-methyltransferase lepI

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