... and amino acid sequence) of multimeric (36-mer) Hc from the forest floor-dwelling giant African millipede Archispirostreptus gigas and its allosteric oxygen-binding properties under various physico-chemical conditions. Archispirostreptus gigas Hc consists of only a single subunit type with differential...

... divers. In conclusion, Mb concentration rather than specific functional reactivities may support whale diving performance. * Author for correspondence ( signe.helbo@biology.au.dk ) 11 4 2012 6 6 2012 © 2012. 2012 oxygen binding nitrite reductase hydrogen peroxide...

...T equilibrium ( Perutz, 1983 ; Weber, 2007 ). enthalpy hemoglobin molecular evolution oxygen binding shrew mole star-nosed mole Talpidae temperature effect © 2012. 2012 5 10 2011 * Author for correspondence ( campbelk@cc.umanitoba.ca ) Fig. 3. Effect...

... hemoglobin marlin oxygen binding temperature effect Temperature has long been recognized as a de facto effector of hemoglobin (Hb) function ( Barcroft and King, 1909 ; Macela and Seliskar, 1925 ; Weber et al., 1989; Giardina et al., 1993 ; Samaja et al., 2003 ). This is because O 2 binding...

... proton dissociation,absence of proton binding and exothermic proton association, respectively,upon oxygen binding. Oxygenation-linked lactate binding is exothermic, highly pH dependent and peaks near pH 7.6, where it contributes approximately–30 kJ mol –1 to the overall heat of oxygenation...

... oxygen binding enthalpy deep-sea fish hydrothermal vent anguillid zoarcid Thermarces cerberus Symenchelis parasitica Deep-sea hydrothermal vents provide some of the harshest aquatic conditions that metazoans are exposed to in nature. Here, hot (350°C), anoxic waters bearing high levels...

...Michael A. Menze; Nadja Hellmann; Heinz Decker; Manfred K. Grieshaber ABSTRACT Haemocyanin serves as an oxygen carrier in the haemolymph of decapod crustaceans. The oxygen-binding behaviour of the pigment is modulated by the two major anaerobic metabolites, L-lactate and urate. The binding...

... to the heterodimer within the tetramer is also cooperative. Oxygen binding by Hb I is characterized by a Hill coefficient, n H , of 1.5. The higher cooperativity of O 2 binding by the tetrameric Hb II ( n H =2.1) reflects either the additional interactions across the dimer–dimer interface or the association...

...A. Christine Brown; Nora B. Terwilliger ABSTRACT The in vivo oxygen-binding characteristics of Cancer magister whole hemolymph were compared across developmental stages with those of purified hemocyanin. When the 25S hemocyanins from first-instar juvenile and adult C. magister were dialyzed against...

... hemocyanins. Buffered saline solutions for oxygen binding experiments were prepared according to the total osmolality and ion concentrations measured in the hemolymph of adult Cancer magister maintained in 100% sea water ( Hunter and Rudy, 1975 ; Graham et al . 1983 ; Brown and Terwilliger, 1992...

...N. K. Sanders; J. J. Childress ABSTRACT The effects of temperature and pH on haemocyanin oxygen-binding were compared for three species of diurnally vertically migrating and two species of non-migrating, pelagic oplophorid shrimps from the deep sea off the Hawaiian island of Oahu. The effects of L...

...O. L. E. Brix; Saverio G. Condó; Alfredo Colosimo; Bruno Giardina ABSTRACT The thermal sensitivity of oxygen binding has been studied at 10, 15, 20 and 25 °C in whole blood from specimens of Neptunea antiqua acclimated to ambient salinities of 24 and 35 ‰. The O 2 affinity is strongly pH-dependent...