1y0w Summary

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T-to-THigh quaternary Transitions in Human Hemoglobin: betaV1M deoxy low-salt (10 test sets)

The structure was published by Kavanaugh, J.S., Rogers, P.H., and Arnone, A., in 2005 in a paper entitled "Crystallographic evidence for a new ensemble of ligand-induced allosteric transitions in hemoglobin: the T-to-T(high) quaternary transitions." (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 2.14 Å and deposited in 2004.

The experimental data on which the structure is based was also 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 most likely forms heterotetramers.

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%
C 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%
D 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, C (P69905) Globinssearch Globinssearch PF00042: Globinsearch
B, D (P68871) Globinssearch Globinssearch PF00042: Globinsearch

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

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