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Femtosecond spectroscopy studies of recombinant hemoglobin I of the clam Lucina pectinata (Gmelin, 1791)
(2011)
Lucina pectinata (Gmelin, 1791) is a clam that can be found in sulfide-rich muds in the
coastal mangroves of the southwest coast of Puerto Rico. It contains three different
hemoglobins in the gill tissue, hemoglobin I, ...
Sulfheme formation mechanism and spectra analysis using QM/MM and TDDFT
(2018-05)
Since the 1863 discovery of a new green hemoglobin derivative called “sulfhemoglobin”, the
nature of its characteristic 618 nm absorption band and formation mechanism has been the subject of
several hypotheses. Many ...
Structural characterization of the oxygen reactive heamoglobins from the clam Lucina pectinata
(2014)
Hemoglobins comprise a challenging area of study within biochemical research. They play an
important physiological role in organisms, like oxygen transport and storage. Three hemoglobins were discovered in the ctenidia ...
Sulfmyoglobin formation pathway upon reaction of oxy-myoglobin and hydrogen sulfide
(2019-12-03)
Myoglobin (Mb) binds oxygen with high affinity as a low spin singlet complex and thus functions as an oxygen storage protein. Quantum chemical calculations of oxy-Mb models with hydrogen sulfide (H2S) in the active site ...
Structural aspects and chemical species involved in the hemeperoxidases catalytic oxidation of hydrogen sulfide by hydrogen peroxide and oxygen
(2018)
Hydrogen sulfide (H2S) has gained attention since it is implied in human physiological functions with potential therapeutically effects. Furthermore, H2S interacts with physiologically important hemeproteins such as ...
Crystallographic structures of hemoglobin II (HbII) from Lucina Pectinata in the 4–9 pH range
(2011)
Lucina pectinata’s ctenidia contains three hemeproteins: the hydrogen sulfide reactive hemoglobin I (HbI) and the oxygen transporting hemoglobins II and III (HbII and HbIII) that remain unaffected by the presence of H2S. ...
New crystallographic structures of Oxy-HbII-III and CN-HbII-III forms from Lucina pectinata
(2011)
The clam Lucina pectinata is found in the sulfide-rich southwest coastal sediments of La Parguera, Puerto Rico in the Caribbean Sea. This bivalve mollusk has developed a chemoautotrophic symbiotic relation with the bacteria ...
Global and local structural analysis of the sulfheme complex: A role in the decrease of myoglobin functionality
(2016)
When the human body is exposed to high concentration of hydrogen sulfide (H2S, recently identified as a signaling gas), a rare type of anemia called sulfhemoglobinemia is developed. This condition is triggered by the ...
Crystal structures of hemeproteins: Sulf and H2S myoglobin derivatives and Lucina pectinata Oxy (HbII-HbIII) and Oxy (HbIII-HbIII) systems
(2020-04-21)
As a gasotransmitter, hydrogen sulfide (H2S) biochemistry in humans is of pivotal importance. One relevant reaction of H2S in our bodies is its interaction with hemeproteins. The threshold of its beneficial/harmful effects ...
Surface characterization of chemically modified electrodes with gold nanoparticles and (His)6-rHbI from Luciana pectinata for H2S Detection
(2019-05-15)
The recombinant polyhistidine-tagged hemoglobin I ((His)6-rHbI) from bivalve Lucina pectinata is an ideal biocomponent for a hydrogen sulfide (H2S) biosensor due to its high affinity for H2S. Nowadays it is clear that H2S ...