Results 121 to 130 of about 18,931 (242)

Electronic Absorption Spectra of Tetrapyrrole-Based Pigments via TD-DFT: A Reduced Orbital Space Study

, 2016
Tetrapyrrole-based pigments play a crucial role in photosynthesis as principal light absorbers in light-harvesting chemical systems. As such, accurate theoretical descriptions of the electronic absorption spectra of these pigments will aid in the proper ...
Kushal Shrestha (1546786), Kyle A. Virgil (1524295), Elena Jakubikova (1468894)   +2 more
core   +1 more source

Matrix Selection Strategies for MALDI-TOF MS/MS Characterization of Cyclic Tetrapyrroles in Blood and Food Samples

Molecules
Cyclic tetrapyrrole derivatives such as porphyrins, chlorins, corrins (compounds with a corrin core), and phthalocyanines are a family of molecules containing four pyrrole rings usually coordinating a metal ion (Mg, Cu, Fe, Zn, etc.). Here, we report the
Mariachiara Bianco, Giovanni Ventura, Cosima Damiana Calvano, Ilario Losito, Tommaso R. I. Cataldi, Antonio Monopoli   +5 more
doaj   +1 more source

COVID-19 Therapy: Could a Chlorophyll Derivative Promote Cellular Accumulation of Zn2+ Ions to Inhibit SARS-CoV-2 RNA Synthesis?

Frontiers in Plant Science, 2020
Nicole F. Clark, Andrew W. Taylor-Robinson   +1 more
doaj   +1 more source

Light regulation of tetrapyrrole biosynthesis in Arabidopsis

, 2007
The tetrapyrrole biosynthesis pathway results in the synthesis of both haem and chlorophyll and tight regulation of this pathway during de-etiolation is critical for the safe biogenesis of the photosynthetic apparatus.
Stephenson, P., Connor, D., Terry, M.
core   +1 more source

Investigating the biosynthesis of heam d1 in pseudomonas aeruginosa: a cofactor for dissimilatory nitrite reductase. [PDF]

, 2010
PhDHaem d1 is a modified tetrapyrrole unique to the periplasmic enzyme nitrite reductase where it acts in catalysing the reduction of nitrite (NO2 -) to nitric oxide (NO), as part of denitrification.
Parmar-Bhundia, Vina
core   +1 more source

9th International Conference on Tetrapyrrole Photoreceptors of Photosynthetic Organisms (ICTPPO 2009): Meeting Proceedings

, 2009
Tetrapyrroles are strongly pigmented heterocyclic molecules that play key roles in the harvesting of light and in its efficient conversion into chemical energy by photosynthetic organisms, including agronomically important plant species.
Lagarias, J. Clark
core  

Evolution of the tetrapyrrole synthesis in eukaryotes

, 2011
This thesis focuses on the nature of heme metabolism in various eukaryotes. One of the aims was the elucidation of the origin of the unique heme biosynthesis pathway in apicomplexan parasites through a comparative study of their photosynthetic relative ...
KOŘENÝ, Luděk
core  

Tetrapyrrole Biosynthetics [PDF]

Nature, 1965
openaire   +1 more source

The Keto Functions of Heme d₁ Are Introduced by NirF and NirC. [PDF]

Chembiochem
Hebecker P, Layer G.
europepmc   +1 more source

Mycobacterium tuberculosis Rv2074 is a coenzyme F420-dependent mycobilin reductase. [PDF]

J Inorg Biochem
de Miranda R, Martinez J, Cuthbert BJ, Mendoza J, Jackson CJ, Goulding CW.   +5 more
europepmc   +1 more source