ID   HBB2_NAJNA              Reviewed;         146 AA.
AC   P22743;
DT   01-AUG-1991, integrated into UniProtKB/Swiss-Prot.
DT   01-AUG-1991, sequence version 1.
DT   03-AUG-2022, entry version 84.
DE   RecName: Full=Hemoglobin subunit beta-2;
DE   AltName: Full=Beta-2-globin;
DE   AltName: Full=Hemoglobin beta-2 chain;
DE   AltName: Full=Hemoglobin beta-II chain;
GN   Name=HBB2;
OS   Naja naja (Indian cobra).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Lepidosauria; Squamata; Bifurcata; Unidentata; Episquamata; Toxicofera;
OC   Serpentes; Colubroidea; Elapidae; Elapinae; Naja.
OX   NCBI_TaxID=35670;
RN   [1]
RP   PROTEIN SEQUENCE.
RC   TISSUE=Blood;
RX   PubMed=7710658; DOI=10.1007/bf01886951;
RA   Naqvi S., Abbasi A., Zaidi Z.H.;
RT   "Primary structure of hemoglobin from cobra Naja naja naja.";
RL   J. Protein Chem. 13:669-679(1994).
CC   -!- FUNCTION: Involved in oxygen transport from the lung to the various
CC       peripheral tissues.
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   PIR; JU0337; HBNJ2I.
DR   AlphaFoldDB; P22743; -.
DR   SMR; P22743; -.
DR   Proteomes; UP000694559; Unplaced.
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; cd08925; Hb-beta-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; IPR002337; Hemoglobin_b.
DR   Pfam; PF00042; Globin; 1.
DR   PRINTS; PR00814; BETAHAEM.
DR   SUPFAM; SSF46458; SSF46458; 1.
DR   PROSITE; PS01033; GLOBIN; 1.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Heme; Iron; Metal-binding; Oxygen transport;
KW   Reference proteome; Transport.
FT   CHAIN           1..146
FT                   /note="Hemoglobin subunit beta-2"
FT                   /id="PRO_0000053033"
FT   BINDING         63
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         92
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"
SQ   SEQUENCE   146 AA;  16290 MW;  C829E39F3AFD1B0D CRC64;
     VHWSAEEKQL ITSLWAKVDV PEVGAATLGK MMVMYPWTQR FFAHFGNLSG PSALCGNPQV
     RAHGKKVLTS FGEALKHLDN VKETFAKLSE LHFDKLHVDP ENFKLLGNVL IIVLAGHHGK
     EFTPSTHASF QKLVNVVAHA LARRYH