ID   MYG_CHEMY               Reviewed;         154 AA.
AC   P02202;
DT   21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 2.
DT   03-AUG-2022, entry version 91.
DE   RecName: Full=Myoglobin;
GN   Name=MB;
OS   Chelonia mydas (Green sea-turtle) (Chelonia agassizi).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC   Archelosauria; Testudinata; Testudines; Cryptodira; Durocryptodira;
OC   Americhelydia; Chelonioidea; Cheloniidae; Chelonia.
OX   NCBI_TaxID=8469;
RN   [1]
RP   PROTEIN SEQUENCE OF 2-154.
RC   TISSUE=Skeletal muscle;
RX   PubMed=6824692; DOI=10.1016/0167-4838(83)90316-3;
RA   Watts D.A., Angelides T., Brown W.D.;
RT   "The primary structure of myoglobin from pacific green sea turtle (Chelonia
RT   mydas caranigra).";
RL   Biochim. Biophys. Acta 742:310-317(1983).
CC   -!- FUNCTION: Serves as a reserve supply of oxygen and facilitates the
CC       movement of oxygen within muscles.
CC   -!- SIMILARITY: Belongs to the globin family. {ECO:0000255|PROSITE-
CC       ProRule:PRU00238}.
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DR   PIR; A02523; MYTTG.
DR   RefSeq; XP_007062733.1; XM_007062671.1.
DR   AlphaFoldDB; P02202; -.
DR   SMR; P02202; -.
DR   STRING; 8469.XP_007062733.1; -.
DR   GeneID; 102944618; -.
DR   KEGG; cmy:102944618; -.
DR   CTD; 4151; -.
DR   eggNOG; KOG3378; Eukaryota.
DR   OrthoDB; 1405713at2759; -.
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   InterPro; IPR000971; Globin.
DR   InterPro; IPR009050; Globin-like_sf.
DR   InterPro; IPR002335; Myoglobin.
DR   PANTHER; PTHR47132; PTHR47132; 1.
DR   Pfam; PF00042; Globin; 1.
DR   PRINTS; PR00613; MYOGLOBIN.
DR   SUPFAM; SSF46458; SSF46458; 1.
DR   PROSITE; PS01033; GLOBIN; 1.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Heme; Iron; Metal-binding; Muscle protein;
KW   Oxygen transport; Transport.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000269|PubMed:6824692"
FT   CHAIN           2..154
FT                   /note="Myoglobin"
FT                   /id="PRO_0000053381"
FT   BINDING         65
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         94
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   154 AA;  17521 MW;  3D70C0D7351465E9 CRC64;
     MGLSDDEWNH VLGIWAKVEP DLTAHGQEVI IRLFQLHPET QERFAKFKNL TTIDALKSSE
     EVKKHGTTVL TALGRILKQK NNHEQELKPL AESHATKHKI PVKYLEFICE IIVKVIAEKH
     PSDFGADSQA AMKKALELFR NDMASKYKEF GFLG