SMTL ID : 5zle.1

Human duodenal cytochrome b (Dcytb) in substrate free form

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 2.60 Å

Oligo State

homo-dimer

Ligands

4 x HEM: PROTOPORPHYRIN IX CONTAINING FE(Non-covalent)

HEM.1: 24 residues within 4Å: Chain A: W.30, F.47, H.50, P.51, M.54, F.58, V.104, F.105, H.108, N.115, M.116, Y.117, S.118, H.120, S.121, G.124, L.125, V.170, T.173, A.174, G.177, L.178, E.180, K.181 21 PLIP interactions: 21 interactions with chain A, Hydrophobic interactions: A:W.30, A:F.47, A:P.51, A:F.58, A:F.105, A:V.170, A:T.173, A:A.174, A:L.178, A:K.181 Hydrogen bonds: A:V.104, A:M.116, A:S.118, A:E.180 Salt bridges: A:H.108, A:H.108 pi-Stacking: A:H.50, A:H.120 pi-Cation interactions: A:H.50 Metal complexes: A:H.50, A:H.120 HEM.2: 21 residues within 4Å: Chain A: I.66, Y.69, R.70, K.79, K.83, H.86, A.87, N.90, Y.131, Q.134, L.135, G.138, F.139, F.142, L.143, M.156, H.159, V.160, G.163, V.219, K.225 20 PLIP interactions: 20 interactions with chain A, Hydrophobic interactions: A:I.66, A:Y.69, A:Y.69, A:K.83, A:A.87, A:N.90, A:Y.131, A:Q.134, A:F.142, A:L.143, A:V.160, A:V.219 Hydrogen bonds: A:I.66 Salt bridges: A:R.70, A:K.79, A:K.225, A:K.225 pi-Stacking: A:H.86 Metal complexes: A:H.86, A:H.159 HEM.3: 24 residues within 4Å: Chain B: W.30, F.47, H.50, P.51, M.54, F.58, V.104, F.105, H.108, N.115, M.116, Y.117, S.118, H.120, S.121, G.124, L.125, V.170, T.173, A.174, G.177, L.178, E.180, K.181 21 PLIP interactions: 21 interactions with chain B, Hydrophobic interactions: B:W.30, B:F.47, B:P.51, B:F.58, B:F.105, B:V.170, B:T.173, B:A.174, B:L.178, B:K.181 Hydrogen bonds: B:V.104, B:M.116, B:S.118, B:E.180 Salt bridges: B:H.108, B:H.108 pi-Stacking: B:H.50, B:H.120 pi-Cation interactions: B:H.50 Metal complexes: B:H.50, B:H.120 HEM.4: 21 residues within 4Å: Chain B: I.66, Y.69, R.70, K.79, K.83, H.86, A.87, N.90, Y.131, Q.134, L.135, G.138, F.139, F.142, L.143, M.156, H.159, V.160, G.163, V.219, K.225 20 PLIP interactions: 20 interactions with chain B, Hydrophobic interactions: B:I.66, B:Y.69, B:Y.69, B:K.83, B:A.87, B:N.90, B:Y.131, B:Q.134, B:F.142, B:L.143, B:V.160, B:V.219 Hydrogen bonds: B:I.66 Salt bridges: B:R.70, B:K.79, B:K.225, B:K.225 pi-Stacking: B:H.86 Metal complexes: B:H.86, B:H.159

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Ganasen, M. et al., Structural basis for promotion of duodenal iron absorption by enteric ferric reductase with ascorbate. Commun Biol (2018)

Release Date

2018-10-31

Peptides

Cytochrome b reductase 1: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
A

Membrane

We predict this structure to be a membrane protein.
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Cytochrome b reductase 1

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