SMTL ID : 3qob.1

Mechanical Coupling Controls Cooperative Ligand Binding in a Homodimeric Hemoglobin

Coordinates

PDB Format

Method

X-RAY DIFFRACTION 1.60 Å

Oligo State

homo-dimer

Ligands

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

HEM.1: 16 residues within 4Å: Chain A: Y.50, F.51, R.53, H.69, L.73, A.76, L.77, F.97, H.101, R.104, I.106, F.111, I.114 Chain B: K.96, N.100 Ligands: CMO.2 17 PLIP interactions: 14 interactions with chain A, 3 interactions with chain B, Hydrophobic interactions: A:F.51, A:F.51, A:L.73, A:F.97, A:I.106, A:F.111, A:F.111, A:I.114, A:I.114 Hydrogen bonds: A:N.100, B:N.100 Salt bridges: A:R.53, A:R.104, A:R.104, B:K.96, B:K.96 Metal complexes: A:H.101 HEM.3: 17 residues within 4Å: Chain A: K.96, N.100 Chain B: Y.50, F.51, R.53, H.69, L.73, A.76, L.77, F.97, N.100, H.101, R.104, E.110, F.111, I.114 Ligands: CMO.4 14 PLIP interactions: 3 interactions with chain A, 11 interactions with chain B, Hydrogen bonds: A:N.100 Salt bridges: A:K.96, A:K.96, B:R.53, B:R.104, B:R.104 Hydrophobic interactions: B:Y.50, B:F.51, B:F.97, B:F.111, B:F.111, B:I.114, B:I.114 Metal complexes: B:H.101

2 x CMO: CARBON MONOXIDE(Non-functional Binders)

CMO.2: 6 residues within 4Å: Chain A: M.37, L.40, F.51, H.69, L.73 Ligands: HEM.1 No protein-ligand interaction detected (PLIP) CMO.4: 7 residues within 4Å: Chain B: M.37, L.40, F.51, H.69, L.73, I.114 Ligands: HEM.3 No protein-ligand interaction detected (PLIP)

Links

RCSB   PDBe   PDBe-KB   PDBj   PDBsum   CATH   PLIP

Citation

Ren, Z. et al., Cooperative macromolecular device revealed by meta-analysis of static and time-resolved structures. Proc.Natl.Acad.Sci.USA (2012)

Release Date

2020-06-03

Peptides

Globin-1: AB

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

Globin-1

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