ID   GLB4_LAMSP              Reviewed;          32 AA.
AC   P20413;
DT   01-FEB-1991, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1991, sequence version 1.
DT   25-MAY-2022, entry version 50.
DE   RecName: Full=Giant hemoglobin AIV chain;
DE   Flags: Fragment;
OS   Lamellibrachia sp. (Deep-sea giant tube worm).
OC   Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Annelida; Polychaeta;
OC   Sedentaria; Canalipalpata; Sabellida; Siboglinidae; Lamellibrachia;
OC   unclassified Lamellibrachia.
OX   NCBI_TaxID=6424;
RN   [1]
RP   PROTEIN SEQUENCE.
RX   PubMed=3202832;
RA   Suzuki T., Takagi T., Ohta S.;
RT   "N-terminal amino acid sequence of the deep-sea tube worm haemoglobin
RT   remarkably resembles that of annelid haemoglobin.";
RL   Biochem. J. 255:541-545(1988).
CC   -!- SUBUNIT: Giant hemoglobin is composed of four heme-containing chains
CC       (AI to AIV), and two linker chains (AV and AVI).
CC   -!- SIMILARITY: Belongs to the globin family. {ECO:0000255|PROSITE-
CC       ProRule:PRU00238}.
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DR   PIR; S01810; S01810.
DR   AlphaFoldDB; P20413; -.
DR   SMR; P20413; -.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0005344; F:oxygen carrier activity; IEA:UniProtKB-KW.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Heme; Iron; Metal-binding; Oxygen transport;
KW   Transport.
FT   CHAIN           1..>32
FT                   /note="Giant hemoglobin AIV chain"
FT                   /id="PRO_0000052522"
FT   NON_TER         32
SQ   SEQUENCE   32 AA;  3695 MW;  FD7E1ADABD35FD13 CRC64;
     SGNVAEAPKH YHCSYEDADI VMREWYHVWG SG