Results 31 to 40 of about 11,005 (181)
Tetrapyrrole utilization by Bacteroids ruminocola [PDF]
Journal of Bacteriology, 1977 Reduced versus oxidized difference spectra of whole cells and pyridine hemochromogens of heme-requiring isolates of Bacteroides ruminicola are altered when deuteroporphyrin or mesoporphyrin replaces protoheme as a growth factor. During growth in the presence of either deuteroporphyrin or mesoporphyrin, whole cells exhibit peaks at 545 t547, 515 to 518,
D R, McCall, D R, Caldwell
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Biosynthesis of the modified tetrapyrroles—the pigments of life [PDF]
Journal of Biological Chemistry, 2020 Modified tetrapyrroles are large macrocyclic compounds, consisting of diverse conjugation and metal chelation systems and imparting an array of colors to the biological structures that contain them. Tetrapyrroles represent some of the most complex small molecules synthesized by cells and are involved in many essential processes that are fundamental to ...
Donald A. Bryant +2 more
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PAPP5 is involved in the tetrapyrrole mediated plastid signalling during chloroplast development.
PLoS ONE, 2013 The initiation of chloroplast development in the light is dependent on nuclear encoded components. The nuclear genes encoding key components in the photosynthetic machinery are regulated by signals originating in the plastids.
Juan de Dios Barajas-López +4 more
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Agronomy, 2020 Ferrochelatase (FC) is the terminal enzyme of heme biosynthesis. In photosynthetic organisms studied so far, there is evidence for two FC isoforms, which are encoded by two genes (FC1 and FC2).
Dilrukshi S. K. Nagahatenna +4 more
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The Inhibitory Effect of Phycocyanin Peptide on Pulmonary Fibrosis In Vitro
Marine Drugs, 2022 Phycocyanin is an excellent antioxidant with anti-inflammatory effects on which recent studies are growing; however, its specific target remains unclear.
Run-Ze Liu +6 more
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Prevention of poxvirus infection by tetrapyrroles [PDF]
BMC Infectious Diseases, 2003 Prevention of poxvirus infection is a topic of great current interest. We report inhibition of vaccinia virus in cell culture by porphyrins and phthalocyanines. Most previous work on the inhibition of viruses with tetrapyrroles has involved photodynamic mechanisms.
Chen-Collins, Avril RM +4 more
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Chemistry – A European Journal, EarlyView.DFT calculations on porphyrin, corrin, and corphin complexes of cobalt, rhodium, iron, manganese, or nickel, and QM/MM calculations on enzyme models, explore the factors controlling the availably of super‐reduced metal(I) states. True metal(I) states are seen in corrin only for cobalt, in corphin only for nickel, and not at all in porphyrin.
Radu‐Ioan Onija +3 more
wiley +1 more source
Surgical inflammation: a pathophysiological rainbow
Journal of Translational Medicine, 2009 Tetrapyrrole molecules are distributed in virtually all living organisms on Earth. In mammals, tetrapyrrole end products are closely linked to oxygen metabolism. Since increasingly complex trophic functional systems for using oxygen are considered in the
Aller María-Angeles +2 more
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Building a library of electrocatalysts based on single‐centered metallophthalocyanines
InfoMat, EarlyView.This study offers a transformative approach that facilitates the discovery of high‐performance catalysts by establishing a metallophthalocyanine‐based electrocatalyst library tailored for energy conversion processes. It will play a crucial role in advancing carbon neutrality and fostering the creation of long‐term sustainable energy ecosystems ...
Jin Hyuk Cho +11 more
wiley +1 more source
Crystal structure of 5-tert-butyl-10,15,20-triphenylporphyrin
Acta Crystallographica Section E: Crystallographic Communications, 2016 In the title free base porphyrin, C42H34N4, the neighbouring N...N distances in the center of the ring vary from 2.818 (8) to 2.998 (8) Å and the phenyl rings are tilted from the 24-atom mean plane at angles varying between 62.42 (2)–71.63 (2)°.
Keith J. Flanagan +3 more
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