Structure of PDB 4x0l Chain B

Receptor sequence
>4x0lB (length=144) Species: 9606 (Homo sapiens) [Search protein sequence]
HLTPEEKSAVTALWGKVNVDEVGGEALGRLLVVYPWTQRFFESFGDLSTP
DAVMGNPKVKAHGKKVLGAFSDGLAHLDNLKGTFATLSELHCDKLHVDPE
NFRLLGNVLVCVLAHHFGKEFTPPVQAAYQKVVAGVANALAHKY
3D structure
PDB4x0l Structural basis for ligand and innate immunity factor uptake by the trypanosome haptoglobin-haemoglobin receptor.
ChainB
Resolution2.05 Å
3D
structure
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Enzymatic activity
Enzyme Commision number ?
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 HEM B T39 F42 F43 H64 K67 V68 F72 H93 L97 V99 N103 L107 L142 T37 F40 F41 H62 K65 V66 F70 H91 L95 V97 N101 L105 L140
BS02 OXY B H64 V68 H62 V66
Gene Ontology
Molecular Function
GO:0004601 peroxidase activity
GO:0005344 oxygen carrier activity
GO:0005515 protein binding
GO:0019825 oxygen binding
GO:0020037 heme binding
GO:0030492 hemoglobin binding
GO:0031720 haptoglobin binding
GO:0031721 hemoglobin alpha binding
GO:0043177 organic acid binding
GO:0046872 metal ion binding
Biological Process
GO:0008217 regulation of blood pressure
GO:0015670 carbon dioxide transport
GO:0015671 oxygen transport
GO:0030185 nitric oxide transport
GO:0042542 response to hydrogen peroxide
GO:0042744 hydrogen peroxide catabolic process
GO:0045429 positive regulation of nitric oxide biosynthetic process
GO:0070293 renal absorption
GO:0070527 platelet aggregation
GO:0097746 blood vessel diameter maintenance
GO:0098869 cellular oxidant detoxification
Cellular Component
GO:0005576 extracellular region
GO:0005615 extracellular space
GO:0005829 cytosol
GO:0005833 hemoglobin complex
GO:0031838 haptoglobin-hemoglobin complex
GO:0070062 extracellular exosome
GO:0071682 endocytic vesicle lumen
GO:0072562 blood microparticle
GO:1904724 tertiary granule lumen
GO:1904813 ficolin-1-rich granule lumen

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:4x0l, PDBe:4x0l, PDBj:4x0l
PDBsum4x0l
PubMed25497229
UniProtP68871|HBB_HUMAN Hemoglobin subunit beta (Gene Name=HBB)

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