Results 81 to 90 of about 5,932,066 (253)

Macromolecular organic acids in the Murchison meteorite [PDF]

open access: yes, 2005
This study has detected bound organic acids within the Murchison meteorite organic macromolecule. Benzoic acid was the most abundant compound; other abundant compounds include C1 and C2 benzoic acids.
Gilmour, I.   +2 more
core  

The balance between fumarate and malate plays an important role in plant development and postharvest quality in tomato fruit [PDF]

open access: yes, 2018
Organic acids, produced as intermediates of the tricarboxylic cycle, play a crucial role in the plant primary metabolism and are considered as being ones of the most important quality traits in edible fruits.
Fernie, Alisdair R   +5 more
core  

G-Quadruplex-Forming Aptamers—Characteristics, Applications, and Perspectives

open access: yesMolecules, 2019
G-quadruplexes constitute a unique class of nucleic acid structures formed by G-rich oligonucleotides of DNA- or RNA-type. Depending on their chemical nature, loops length, and localization in the sequence or structure molecularity, G-quadruplexes are ...
Carolina Roxo   +2 more
doaj   +1 more source

Modification of Aminoacyl tRNA Synthetase in Order to Incorporate an Unnatural Amino Acid [PDF]

open access: yes, 2018
Proteins allow daily processes in the cell to occur. A protein consists of amino acids. There are twenty natural amino acids coded for in the DNA of organisms. The natural amino acids can be modified to form unnatural amino acids (UAAs). UAAs have useful
Burkhart, Grace
core   +1 more source

Two-Holder Strategy for Efficient and Selective Synthesis of Lk 1 ssDNA Catenane

open access: yesMolecules, 2018
DNA catenanes are characterized by their flexible and dynamic motions and have been regarded as one of the key players in sophisticated DNA-based molecular machines.
Qi Li   +6 more
doaj   +1 more source

Effect of Steric Constraint at the γ-Backbone Position on the Conformations and Hybridization Properties of PNAs

open access: yesJournal of Nucleic Acids, 2011
Conformationally preorganized peptide nucleic acids (PNAs) have been synthesized through backbone modifications at the γ-position, where R = alanine, valine, isoleucine, and phenylalanine side chains. The effects of these side-chains on the conformations
Matthew J. Crawford   +4 more
doaj   +1 more source

Free amino acids in a cave beetle \u3cem\u3eDarlingtonea kentuckensis\u3c/em\u3e Valentine (Coleoptera: Carabidae) [PDF]

open access: yes, 1974
Free amino acids of Darlingtonea kentuckensis were investigated by two-dimensional, thin-layer chromatography on Silica Gel G. Thirteen amino acids which could be identifìed (alanine, glutamic acid, glycine, histidine, isoleucine and/or leucine, lysine ...
Sperka, R. J.
core   +2 more sources

Identification of a New Class of Molecules, the Arachidonyl Amino Acids, and Characterization of One Member That Inhibits Pain [PDF]

open access: hybrid, 2001
Susan M. Huang   +12 more
openalex   +1 more source

Propriedades relacionadas à acidez e basicidade a partir da abordagem em química computacional

open access: yesQuímica Nova, 2014
Analytical Chemistry books lack a clear link between thermodynamic and equilibrium approaches involving acids and bases. In this work, theoretical calculations were performed to search for these relations.
Sérgio R. B. Silva   +2 more
doaj   +1 more source

Methylation variation atIGF2differentially methylated regions and maternal folic acid use before and during pregnancy [PDF]

open access: hybrid, 2011
Cathrine Hoyo   +10 more
openalex   +1 more source

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