ID   HBA2_NOTAN              Reviewed;         141 AA.
AC   P62363; P16308;
DT   05-JUL-2004, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   03-AUG-2022, entry version 59.
DE   RecName: Full=Hemoglobin subunit alpha-2;
DE   AltName: Full=Alpha-2-globin;
DE   AltName: Full=Hemoglobin alpha-2 chain;
GN   Name=hba2;
OS   Notothenia angustata (Rockcod).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata;
OC   Eupercaria; Perciformes; Notothenioidei; Nototheniidae; Notothenia.
OX   NCBI_TaxID=8210;
RN   [1]
RP   PROTEIN SEQUENCE.
RX   PubMed=1483479; DOI=10.1111/j.1432-1033.1992.tb17501.x;
RA   Fago A., D'Avino R., di Prisco G.;
RT   "The hemoglobins of Notothenia angustata, a temperate fish belonging to a
RT   family largely endemic to the Antarctic Ocean.";
RL   Eur. J. Biochem. 210:963-970(1992).
CC   -!- FUNCTION: Involved in oxygen transport from gills to the various
CC       peripheral tissues.
CC   -!- SUBUNIT: Hb2 is a heterotetramer of two alpha-2 chains and two beta
CC       chains.
CC   -!- TISSUE SPECIFICITY: Red blood cells.
CC   -!- MISCELLANEOUS: This fish has two hemoglobins: Hb1 and Hb2.
CC   -!- SIMILARITY: Belongs to the globin family. {ECO:0000255|PROSITE-
CC       ProRule:PRU00238}.
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DR   PIR; S27050; S27050.
DR   AlphaFoldDB; P62363; -.
DR   SMR; P62363; -.
DR   GO; GO:0005833; C:hemoglobin complex; IEA:InterPro.
DR   GO; GO:0020037; F:heme binding; IEA:InterPro.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
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   Pfam; PF00042; Globin; 1.
DR   PRINTS; PR00612; ALPHAHAEM.
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; Transport.
FT   CHAIN           1..141
FT                   /note="Hemoglobin subunit alpha-2"
FT                   /id="PRO_0000052704"
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         1
FT                   /note="N-acetylserine"
FT                   /evidence="ECO:0000250|UniProtKB:P62387"
SQ   SEQUENCE   141 AA;  15720 MW;  2E4578D61EBFD9FF CRC64;
     SLSTKDKETV KAFWSKVSGK SEDIGNDALS RMLVVYPQTK TYFSHWKELT PGSAPVRKHG
     MTVMKGVGDA VSKIEDLTAG LMELSELHAF TLRVDPANFK ISHNILVVFA IMFPKEFTAE
     VHVSMDKFLA ALARALSEKY R