HBA_EQUZE
ID HBA_EQUZE Reviewed; 142 AA.
AC P01960; Q9TQU0;
DT 21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 2.
DT 03-AUG-2022, entry version 102.
DE RecName: Full=Hemoglobin subunit alpha;
DE AltName: Full=Alpha-globin;
DE AltName: Full=Hemoglobin alpha chain;
DE Contains:
DE RecName: Full=Hemopressin {ECO:0000250|UniProtKB:P01946};
GN Name=HBA;
OS Equus zebra (Mountain zebra).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Laurasiatheria; Perissodactyla; Equidae; Equus.
OX NCBI_TaxID=9791;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=9847419; DOI=10.1007/pl00006436;
RA Oakenfull E.A., Clegg J.B.;
RT "Phylogenetic relationships within the genus Equus and the evolution of
RT alpha and theta globin genes.";
RL J. Mol. Evol. 47:772-783(1998).
RN [2]
RP PROTEIN SEQUENCE OF 2-142.
RX PubMed=7061044; DOI=10.1515/bchm2.1982.363.1.59;
RA Mazur G., Braunitzer G.;
RT "The sequence of hemoglobins from an asiatic wild ass and a mountain
RT zebra.";
RL Hoppe-Seyler's Z. Physiol. Chem. 363:59-71(1982).
RN [3]
RP AMINO-ACID COMPOSITION, AND MAPPING OF PEPTIDES.
RX PubMed=5354968; DOI=10.1016/s0021-9258(18)63495-7;
RA Kitchen H., Easley C.W.;
RT "Structural comparison of the hemoglobins of the genus Equus with those of
RT ruminants.";
RL J. Biol. Chem. 244:6533-6542(1969).
CC -!- FUNCTION: Involved in oxygen transport from the lung to the various
CC peripheral tissues.
CC -!- FUNCTION: [Hemopressin]: Hemopressin acts as an antagonist peptide of
CC the cannabinoid receptor CNR1. Hemopressin-binding efficiently blocks
CC cannabinoid receptor CNR1 and subsequent signaling.
CC {ECO:0000250|UniProtKB:P01946}.
CC -!- SUBUNIT: Heterotetramer of two alpha chains and two beta chains.
CC -!- TISSUE SPECIFICITY: Red blood cells.
CC -!- SIMILARITY: Belongs to the globin family. {ECO:0000255|PROSITE-
CC ProRule:PRU00238}.
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DR EMBL; U70194; AAB93468.1; -; Genomic_DNA.
DR EMBL; U70195; AAB93469.1; -; Genomic_DNA.
DR PIR; B91706; HAHOZ.
DR AlphaFoldDB; P01960; -.
DR SMR; P01960; -.
DR PRIDE; P01960; -.
DR GO; GO:0005833; C:hemoglobin complex; IEA:InterPro.
DR GO; GO:0020037; F:heme binding; IEA:InterPro.
DR GO; GO:0005506; F:iron ion binding; IEA:InterPro.
DR GO; GO:0019825; F:oxygen binding; IEA:InterPro.
DR GO; GO:0005344; F:oxygen carrier activity; IEA:UniProtKB-KW.
DR CDD; cd08927; Hb-alpha-like; 1.
DR Gene3D; 1.10.490.10; -; 1.
DR InterPro; IPR000971; Globin.
DR InterPro; IPR009050; Globin-like_sf.
DR InterPro; IPR012292; Globin/Proto.
DR InterPro; IPR002338; Hemoglobin_a-typ.
DR InterPro; IPR002339; Hemoglobin_pi.
DR Pfam; PF00042; Globin; 1.
DR PRINTS; PR00612; ALPHAHAEM.
DR PRINTS; PR00815; PIHAEM.
DR SUPFAM; SSF46458; SSF46458; 1.
DR PROSITE; PS01033; GLOBIN; 1.
PE 1: Evidence at protein level;
KW Acetylation; Direct protein sequencing; Heme; Iron; Metal-binding;
KW Oxygen transport; Phosphoprotein; Transport.
FT INIT_MET 1
FT /note="Removed"
FT /evidence="ECO:0000269|PubMed:7061044"
FT CHAIN 2..142
FT /note="Hemoglobin subunit alpha"
FT /id="PRO_0000052630"
FT PEPTIDE 96..104
FT /note="Hemopressin"
FT /evidence="ECO:0000250|UniProtKB:P01946"
FT /id="PRO_0000455874"
FT BINDING 59
FT /ligand="heme b"
FT /ligand_id="ChEBI:CHEBI:60344"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="distal binding residue"
FT BINDING 88
FT /ligand="heme b"
FT /ligand_id="ChEBI:CHEBI:60344"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="proximal binding residue"
FT MOD_RES 4
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:P69905"
FT MOD_RES 8
FT /note="N6-succinyllysine"
FT /evidence="ECO:0000250|UniProtKB:P01942"
FT MOD_RES 9
FT /note="Phosphothreonine"
FT /evidence="ECO:0000250|UniProtKB:P69905"
FT MOD_RES 12
FT /note="N6-succinyllysine"
FT /evidence="ECO:0000250|UniProtKB:P01942"
FT MOD_RES 17
FT /note="N6-acetyllysine; alternate"
FT /evidence="ECO:0000250|UniProtKB:P69905"
FT MOD_RES 17
FT /note="N6-succinyllysine; alternate"
FT /evidence="ECO:0000250|UniProtKB:P01942"
FT MOD_RES 41
FT /note="N6-succinyllysine"
FT /evidence="ECO:0000250|UniProtKB:P01942"
FT MOD_RES 50
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:P69905"
FT MOD_RES 103
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:P01942"
FT MOD_RES 109
FT /note="Phosphothreonine"
FT /evidence="ECO:0000250|UniProtKB:P01942"
FT MOD_RES 125
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:P01942"
FT MOD_RES 135
FT /note="Phosphothreonine"
FT /evidence="ECO:0000250|UniProtKB:P01942"
FT MOD_RES 138
FT /note="Phosphothreonine"
FT /evidence="ECO:0000250|UniProtKB:P01942"
FT MOD_RES 139
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:P01942"
SQ SEQUENCE 142 AA; 15220 MW; 93B837BC15C1D175 CRC64;
MVLSAADKTN VKAAWSKVGG NAGEFGAEAL ERMFLGFPTT KTYFPHFDLS HGSAQVKAHG
KKVGDALTLA VGHLDDLPGA LSNLSDLHAH KLRVDPVNFK LLSHCLLSTL AVHLPNDFTP
AVHASLDKFL STVSTVLTSK YR
