SMTL ID : 1pjq.1

Structure and function of CysG, the multifunctional methyltransferase/dehydrogenase/ferrochelatase for siroheme synthesis

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.21 Å

Oligo State

homo-dimer

Ligands

3 x ACT: ACETATE ION(Non-functional Binders)

ACT.1: 6 residues within 4Å: Chain A: G.19, G.20, G.21, T.44, T.80, D.81 5 PLIP interactions: 5 interactions with chain A Hydrophobic interactions: A:D.81 Hydrogen bonds: A:G.20 Water bridges: A:L.43, A:T.44, A:T.44 ACT.2: 8 residues within 4Å: Chain A: G.301, G.302, D.303, I.306, F.307, T.331, A.332, Y.381 6 PLIP interactions: 6 interactions with chain A Hydrophobic interactions: A:F.307 Hydrogen bonds: A:D.303, A:D.303, A:F.307, A:A.332, A:Y.381 ACT.4: 5 residues within 4Å: Chain B: K.27, M.113, P.114, S.115, S.128 2 PLIP interactions: 2 interactions with chain B Hydrogen bonds: B:S.115 Salt bridges: B:K.27

1 x PGE: TRIETHYLENE GLYCOL(Non-functional Binders)

PGE.3: 5 residues within 4Å: Chain A: L.135, L.139, K.142 Chain B: Q.240, Q.241 2 PLIP interactions: 1 interactions with chain B, 1 interactions with chain A Water bridges: B:Q.241 Hydrogen bonds: A:K.142

1 x SAH: S-ADENOSYL-L-HOMOCYSTEINE(Non-covalent)

SAH.5: 18 residues within 4Å: Chain B: P.225, L.250, G.301, G.302, D.303, I.306, F.307, T.331, A.332, C.336, Y.381, M.382, V.408, N.410, G.411, P.436, A.437, L.438 13 PLIP interactions: 13 interactions with chain B Hydrophobic interactions: B:Y.381 Hydrogen bonds: B:D.303, B:I.306, B:T.331, B:A.332, B:Y.381, B:M.382, B:G.411, B:G.411 Water bridges: B:F.380, B:A.437, B:A.437, B:I.439

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Stroupe, M.E. et al., CysG structure reveals tetrapyrrole-binding features and novel regulation of siroheme biosynthesis. Nat.Struct.Biol. (2003)

Release Date

2003-12-02

Peptides

Siroheme synthase: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Siroheme synthase

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