1y01 Summary

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Crystal structure of AHSP bound to Fe(II) alpha-hemoglobin

The structure was published by Feng, L., Gell, D.A., Zhou, S., et al., Weiss, M.J., Mackay, J.P., and Shi, Y., in 2004 in a paper entitled "Molecular mechanism of AHSP-mediated stabilization of alpha-hemoglobin." (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 2.8 Å and deposited in 2004.

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

This PDB entry contains a complex of 2 biomacromolecules, namely Alpha-hemoglobin stabilizing protein and Hemoglobin alpha 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 heterodimers.

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 Alpha-hemoglobin stabilizing protein Q9NZD4 (1-102) (AHSP_HUMAN)search Homo sapienssearch 90% 102 87%
B Hemoglobin alpha chain P69905 (1-142) (HBA_HUMAN)search Homo sapienssearch 98% 142 88%


This entry contains 2 unique UniProt proteins:

UniProt accession Name Organism PDB
Q9NZD4 (1 - 102) Alpha-hemoglobin stabilizing protein Homo sapiens
P69905 (1 - 142) Hemoglobin alpha chain Homo sapiens

Chain Structural classification (SCOP) Structural classification (CATH) Sequence family (Pfam)
A (Q9NZD4) Alpha-hemoglobin stabilizing protein AHSPsearch Alpha-hemoglobin stabilizing proteinsearch PF09236: Alpha-haemoglobin stabilising proteinsearch
B (P69905) Globinssearch Globinssearch PF00042: Globinsearch

Chain ID Molecular function (GO) Cellular component (GO) Biological process (GO)
A (Q9NZD4) hemoglobin bindingsearch unfolded protein bindingsearch hemoglobin complexsearch cytoplasmsearch hemoglobin metabolic processsearch hemopoiesissearch protein foldingsearch protein stabilizationsearch
B (P69905) heme bindingsearch iron ion bindingsearch oxygen bindingsearch protein bindingsearch metal ion bindingsearch oxygen transporter activitysearch haptoglobin bindingsearch peroxidase activitysearch hemoglobin complexsearch cytosolsearch extracellular vesicular exosomesearch extracellular regionsearch membranesearch haptoglobin-hemoglobin complexsearch endocytic vesicle lumensearch blood microparticlesearch cytosolic small ribosomal subunitsearch oxygen transportsearch positive regulation of cell deathsearch protein heterooligomerizationsearch response to hydrogen peroxidesearch transportsearch bicarbonate transportsearch small molecule metabolic processsearch hydrogen peroxide catabolic processsearch oxidation-reduction processsearch

Chain InterPro annotation
A Alpha-haemoglobin stabilising proteinsearch
B Globinsearch Haemoglobin, alphasearch Haemoglobin, pisearch Globin-likesearch Globin, structural domainsearch