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SMTL ID : 9s4i.1

Human carboxyhemoglobin bound to Staphylococcus aureus IsdH-N2N3 - 2IsdH:Hbdim complex - 3DVA component 0 left tail

Coordinates

PDB Format Compare

Method

ELECTRON MICROSCOPY 4.00 Å

Oligo State

hetero-1-1-2-mer

Ligands

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

HEM.1:

18 residues within 4Å:

Chain A: T.38, Y.41, F.42, H.44, H.57, K.60, V.61, A.64, L.65, L.82, L.85, H.86, L.90, F.97, L.100, L.135
Chain C: Y.318, Y.322

18 PLIP interactions:

17 interactions with chain A, 1 interactions with chain C,

Hydrophobic interactions: A:T.38, A:Y.41, A:F.42, A:F.42, A:F.42, A:K.60, A:V.61, A:L.82, A:L.85, A:L.90, A:F.97, A:L.100, A:L.135
Salt bridges: A:H.44, A:K.60
pi-Stacking: A:H.57
Metal complexes: A:H.86
Hydrogen bonds: C:Y.322

HEM.2:

16 residues within 4Å:

Chain B: F.41, F.42, H.63, K.66, V.67, A.70, F.71, L.88, L.91, H.92, L.96, V.98, N.102, F.103, L.106, L.141

17 PLIP interactions:

17 interactions with chain B,

Hydrophobic interactions: B:F.41, B:F.42, B:F.42, B:K.66, B:F.71, B:F.71, B:L.88, B:L.91, B:L.96, B:L.96, B:V.98, B:F.103, B:F.103, B:L.106, B:L.141
Salt bridges: B:K.66
Metal complexes: B:H.92

Links

RCSB PDBe PDBe-KB PDBj PDBsum CATH PLIP

Citation

Comani, V.B. et al., Hemoglobin receptor redundancy in Staphylococcus aureus: molecular flexibility as a determinant of divergent hemophore activity. J Struct Biol X (2025)

Release Date

2025-11-12

Peptides

Hemoglobin subunit alpha: A
Hemoglobin subunit beta: B
Iron-regulated surface determinant protein H: CD

SMTL:PDB

SMTL Chain Id:
PDB Chain Id:

A
A

B
B

C
C

D
D

Export Alignment

Secondary Structure
NoneDSSPPSIPREDSSpro

Colour Scheme

Fade MismatchesEnhance Mismatches

ChainUnique ChainRainbow2° StructureBfactorBfactor RangeSOAEntropyClustalHydrophobicSizeChargedPolarProlineSer/ThrCysteineAliphaticAromaticNo Colour

Background

3D Viewer
NGLPV2D

Hemoglobin subunit alpha

Hemoglobin subunit beta

Iron-regulated surface determinant protein H

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