HBA_HELMA
ID HBA_HELMA Reviewed; 142 AA.
AC P68237; P07423;
DT 01-APR-1988, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 2.
DT 03-AUG-2022, entry version 67.
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 Helarctos malayanus (Malayan sun bear) (Ursus malayanus).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Laurasiatheria; Carnivora; Caniformia; Ursidae; Helarctos.
OX NCBI_TaxID=9634;
RN [1]
RP PROTEIN SEQUENCE OF 2-142.
RX PubMed=3620104; DOI=10.1515/bchm3.1987.368.1.507;
RA Hofmann O., Braunitzer G., Goltenboth R.;
RT "The primary structure of the hemoglobin of Malayan sun bear (Helarctos
RT malayanus, Carnivora) and structural comparison to other hemoglobin
RT sequences.";
RL Biol. Chem. Hoppe-Seyler 368:507-511(1987).
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}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR PIR; A26539; A26539.
DR AlphaFoldDB; P68237; -.
DR SMR; P68237; -.
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:0000250|UniProtKB:P18969"
FT CHAIN 2..142
FT /note="Hemoglobin subunit alpha"
FT /id="PRO_0000052799"
FT PEPTIDE 96..104
FT /note="Hemopressin"
FT /evidence="ECO:0000250|UniProtKB:P01946"
FT /id="PRO_0000455958"
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 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 25
FT /note="Phosphotyrosine"
FT /evidence="ECO:0000250|UniProtKB:P69905"
FT MOD_RES 36
FT /note="Phosphoserine"
FT /evidence="ECO:0000250|UniProtKB:P69905"
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; 15241 MW; 998067ACD0B30160 CRC64;
MVLSPADKSN VKATWDKIGS HAGEYGGEAL ERTFASFPTT KTYFPHFDLS PGSAQVKAHG
KKVADALTTA AGHLDDLPGA LSALSDLHAH KLRVDPVNFK FLSHCLLVTL ASHHPAEFTP
AVHASLDKFF SAVSTVLTSK YR
