UniProt functional annotation for Q5KSB7

UniProt code: Q5KSB7.

Organism: Oligobrachia mashikoi (Beard worm).
Taxonomy: Eukaryota; Metazoa; Spiralia; Lophotrochozoa; Annelida; Polychaeta; Sedentaria; Canalipalpata; Sabellida; Siboglinidae; Oligobrachia.
 
Function: The extracellular giant hemoglobin is able to bind and transport oxygen and sulfide simultaneously and reversibly at two different sites.
 
Subunit: The 400 kDa hemoglobin consists of a spherical 24-mer arranged as a double layer of dome-shaped dodecamers. Each dodecamer is composed of the 3-fold trimer of the tetramer A1-A2-B1-B2 having one intra- tetramer (A1-B2) disulfide bond and one inter-tetramer (B1-B2) disulfide bond per tetramer. {ECO:0000269|PubMed:16204001}.
Subcellular location: Secreted.
Similarity: Belongs to the globin family. {ECO:0000255|PROSITE- ProRule:PRU00238}.

Annotations taken from UniProtKB at the EBI.