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SMTL ID : 5hu6.1

Structure of the T. brucei haptoglobin-haemoglobin receptor bound to human haptolgobin-haemoglobin

Coordinates

PDB Format Compare

Method

X-RAY DIFFRACTION 2.90 Å

Oligo State

hetero-1-1-1-1-mer

Ligands

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

HEM.1:

17 residues within 4Å:

Chain A: Y.42, F.43, H.58, K.61, V.62, A.65, L.83, L.86, H.87, L.91, V.93, N.97, F.98, L.101, V.132, L.136
Ligands: OXY.2

16 PLIP interactions:

16 interactions with chain A,

Hydrophobic interactions: A:Y.42, A:F.43, A:K.61, A:V.62, A:A.65, A:L.83, A:L.91, A:V.93, A:F.98, A:V.132, A:L.136
Salt bridges: A:K.61, A:K.61
pi-Stacking: A:H.58, A:H.58
Metal complexes: A:H.87

HEM.3:

22 residues within 4Å:

Chain B: F.40, F.41, H.62, K.65, V.66, A.69, F.70, L.87, H.91, L.95, V.97, N.101, F.102, L.105, L.140
Chain D: K.19, S.22, I.23, K.127, R.162, Y.163
Ligands: OXY.4

20 PLIP interactions:

15 interactions with chain B, 5 interactions with chain D,

Hydrophobic interactions: B:F.40, B:F.41, B:F.41, B:V.66, B:V.66, B:L.87, B:L.87, B:L.95, B:V.97, B:N.101, B:F.102, B:L.105, B:L.140
Salt bridges: B:K.65, D:K.19, D:K.19, D:K.127, D:R.162
Metal complexes: B:H.91
Hydrogen bonds: D:S.22

2 x OXY: OXYGEN MOLECULE(Non-covalent)

OXY.2:	4 residues within 4Å: Chain A: F.43, H.58, V.62 Ligands: HEM.1 No protein-ligand interaction detected (PLIP)
OXY.4:	4 residues within 4Å: Chain B: F.41, H.62, V.66 Ligands: HEM.3 1 PLIP interactions: 1 interactions with chain B Hydrogen bonds: B:H.62

2 x NAG: 2-acetamido-2-deoxy-beta-D-glucopyranose(Post Translational Modification)

NAG.5:	2 residues within 4Å: Chain C: H.35, N.37 No protein-ligand interaction detected (PLIP)
NAG.6:	4 residues within 4Å: Chain C: H.92, P.93, N.94, W.251 2 PLIP interactions: 2 interactions with chain C Hydrophobic interactions: C:P.93 Hydrogen bonds: C:N.94

Links

RCSB PDBe PDBe-KB PDBj PDBsum CATH PLIP

Citation

Lane-Serff, H. et al., Structural basis for ligand and innate immunity factor uptake by the trypanosome haptoglobin-haemoglobin receptor. Elife (2014)

Release Date

2016-03-02

Peptides

Hemoglobin subunit alpha: A
Hemoglobin subunit beta: B
Haptoglobin: C
Haptoglobin-hemoglobin receptor: D

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

Haptoglobin

Haptoglobin-hemoglobin receptor

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