title: Thermal Vent Clam (Calyptogena magnifica) Hemoglobin.
abstract: A heterodont bivalve mollusk Calyptogena magnifica, from the East Pacific Rise and the Galápagos Rift hydrothermal vent areas, contains abundant hemoglobin in circulating erythrocytes. No other known heterodont clam contains a circulating intracellular hemoglobin. The hemoglobin is tetrameric and has a relatively high oxygen affinity, which varies only slightly between 2 degrees and 10 degrees C. The presence of hemoglobin in the clam may facilitate the transport of oxygen to be used in chemoautotrophic hydrogen sulfide metabolism.
authors.forename: R C
authors.initials: RC
authors.lastname: Terwilliger
authors.forename: N B
authors.initials: NB
authors.lastname: Terwilliger
authors.forename: A
authors.initials: A
authors.lastname: Arp