ID   TRHBN_NOSSN             Reviewed;         118 AA.
AC   P52335;
DT   01-OCT-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-1996, sequence version 1.
DT   03-AUG-2022, entry version 72.
DE   RecName: Full=Group 1 truncated hemoglobin GlbN;
DE            Short=Truncated Hb;
DE   AltName: Full=Cyanoglobin;
GN   Name=glbN;
OS   Nostoc sp. (strain MUN 8820).
OC   Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Nostoc.
OX   NCBI_TaxID=55397;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=8932316; DOI=10.1128/jb.178.22.6587-6598.1996;
RA   Hill D.R., Belbin T.J., Thorsteinsson M.V., Bassam D., Brass S., Ernst A.,
RA   Boger P., Paerl H., Mulligan M.E., Potts M.;
RT   "GlbN (cyanoglobin) is a peripheral membrane protein that is restricted to
RT   certain Nostoc spp.";
RL   J. Bacteriol. 178:6587-6598(1996).
CC   -!- COFACTOR:
CC       Name=heme; Xref=ChEBI:CHEBI:30413; Evidence={ECO:0000250};
CC       Note=Binds 1 heme group per subunit. {ECO:0000250};
CC   -!- SUBUNIT: Monomer.
CC   -!- SUBCELLULAR LOCATION: Membrane; Peripheral membrane protein.
CC   -!- SIMILARITY: Belongs to the truncated hemoglobin family. Group I
CC       subfamily. {ECO:0000305}.
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DR   EMBL; L47979; AAB41122.1; -; Genomic_DNA.
DR   AlphaFoldDB; P52335; -.
DR   SMR; P52335; -.
DR   GO; GO:0016020; C:membrane; IEA:UniProtKB-SubCell.
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   Gene3D; 1.10.490.10; -; 1.
DR   InterPro; IPR009050; Globin-like_sf.
DR   InterPro; IPR012292; Globin/Proto.
DR   InterPro; IPR019795; Globin_bac-like_CS.
DR   InterPro; IPR001486; Hemoglobin_trunc.
DR   InterPro; IPR016339; Hemoglobin_trunc_I.
DR   Pfam; PF01152; Bac_globin; 1.
DR   PIRSF; PIRSF002030; Globin_Protozoa/Cyanobacteria; 1.
DR   SUPFAM; SSF46458; SSF46458; 1.
DR   PROSITE; PS01213; GLOBIN_FAM_2; 1.
PE   3: Inferred from homology;
KW   Heme; Iron; Membrane; Metal-binding; Oxygen transport; Transport.
FT   CHAIN           1..118
FT                   /note="Group 1 truncated hemoglobin GlbN"
FT                   /id="PRO_0000162645"
FT   BINDING         70
FT                   /ligand="heme"
FT                   /ligand_id="ChEBI:CHEBI:30413"
FT                   /ligand_part="Fe"
FT                   /ligand_part_id="ChEBI:CHEBI:18248"
FT                   /note="proximal binding residue"
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   118 AA;  12794 MW;  D5B3E461FE4CB60C CRC64;
     MSTLYDNIGG QPAIEQVVDE LHKRIATDSL LAPIFAGTDM AKQRNHLVAF LGQIFEGPKQ
     YGGRPMDKTH AGLNLQQPHF DAIAKHLGEA MAVRGVSAED TKAALDRVTN MKGAILNK