1ird Summary

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Crystal Structure of Human Carbonmonoxy-Haemoglobin at 1.25 A Resolution

A publication describing this structure is not available. The depositing authors are Park, S.-Y.search; Tame, J.R.H.search

This crystal structure was determined using X-ray diffraction at a resolution of 1.25 Å and deposited in 2001.

The experimental data on which the structure is based was not deposited.

This PDB entry contains a complex of 2 biomacromolecules, namely Hemoglobin alpha chain and Hemoglobin beta chain.

It also contains one or more heterogenic compounds (e.g., ligands, co-factors, ions, modified amino acids, etc.); see here for a complete list.

The molecule has more than one probable quaternary state observed. For more details see the quaternary structure page.

The following tables show cross-reference information to other databases (to obtain a list of all PDB entries sharing the same property or classification, click on the magnifying glass icon):


Chain Name UniProt Name of source organism % of UniProt sequence present in the sample Residues in the sample molecules % of residues observed
A Hemoglobin alpha chain P69905 (2-142) (HBA_HUMAN)search Homo sapienssearch 98% 141 100%
B Hemoglobin beta chain P68871 (2-147) (HBB_HUMAN)search Homo sapienssearch 98% 146 100%


This entry contains 2 unique UniProt proteins:

UniProt accession Name Organism PDB
P69905 (2 - 142) Hemoglobin alpha chain Homo sapiens
P68871 (2 - 147) Hemoglobin beta chain Homo sapiens

Chain Structural classification (SCOP) Structural classification (CATH) Sequence family (Pfam)
A (P69905) Globinssearch Globinssearch PF00042: Globinsearch
B (P68871) Globinssearch Globinssearch PF00042: Globinsearch

Chain ID Molecular function (GO) Cellular component (GO) Biological process (GO)
A (P69905) iron ion bindingsearch protein bindingsearch haptoglobin bindingsearch peroxidase activitysearch metal ion bindingsearch oxygen transporter activitysearch heme bindingsearch oxygen bindingsearch hemoglobin complexsearch extracellular vesicular exosomesearch membranesearch extracellular regionsearch endocytic vesicle lumensearch cytosolsearch cytosolic small ribosomal subunitsearch haptoglobin-hemoglobin complexsearch blood microparticlesearch oxidation-reduction processsearch oxygen transportsearch bicarbonate transportsearch positive regulation of cell deathsearch response to hydrogen peroxidesearch hydrogen peroxide catabolic processsearch transportsearch small molecule metabolic processsearch protein heterooligomerizationsearch
B (P68871) oxygen transporter activitysearch protein bindingsearch peroxidase activitysearch haptoglobin bindingsearch hemoglobin bindingsearch heme bindingsearch oxygen bindingsearch metal ion bindingsearch iron ion bindingsearch haptoglobin-hemoglobin complexsearch extracellular vesicular exosomesearch cytosolsearch blood microparticlesearch hemoglobin complexsearch extracellular regionsearch endocytic vesicle lumensearch oxygen transportsearch response to hydrogen peroxidesearch bicarbonate transportsearch hydrogen peroxide catabolic processsearch transportsearch positive regulation of cell deathsearch renal absorptionsearch oxidation-reduction processsearch nitric oxide transportsearch small molecule metabolic processsearch blood coagulationsearch platelet aggregationsearch regulation of blood pressuresearch positive regulation of nitric oxide biosynthetic processsearch protein heterooligomerizationsearch regulation of blood vessel sizesearch

Chain InterPro annotation
A Globinsearch Haemoglobin, alphasearch Haemoglobin, pisearch Globin-likesearch Globin, structural domainsearch
B Globinsearch Haemoglobin, betasearch Globin-likesearch Globin, structural domainsearch