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Guanidine exists protonated, as guanidinium, in solution at physiological pH. Guanidinium chloride (also known as guanidine hydrochloride) has chaotropic properties and is used to denature proteins. Guanidinium chloride is known to denature proteins with a linear relationship between concentration and free energy of unfolding.
Arginine is the amino acid with the formula (H 2 N)(HN)CN(H)(CH 2) 3 CH(NH 2)CO 2 H. The molecule features a guanidino group appended to a standard amino acid framework. At physiological pH, the carboxylic acid is deprotonated (−CO 2 −) and both the amino and guanidino groups are protonated, resulting in a cation.
Guanidinium compounds (4 P) H. Hydroxyguanidines (1 P) N. Nitroguanidines (8 P) Nitrosoguanidines (1 P) Pages in category "Guanidines" The following 116 pages are in ...
Guanidinium chloride is a weak acid with a pK a of 13.6. The reason that it is such a weak acid is the complete delocalisation of the positive charge through 3 nitrogen atoms (plus a little bit positive charge on carbon). However, some stronger bases can deprotonate it, such as sodium hydroxide:
Pages in category "Guanidinium compounds" The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes. F. Funobactam; G.
The reactivity of a functional group can be modified by other functional groups nearby. Functional group interconversion can be used in retrosynthetic analysis to plan organic synthesis. A functional group is a group of atoms in a molecule with distinctive chemical properties, regardless of the other atoms in the molecule. The atoms in a ...
Galega officinalis (French lilac) was used in diabetes treatment for centuries. [5] In the 1920s, guanidine compounds were discovered in Galega extracts. Animal studies showed that these compounds lowered blood glucose levels.
The hairpin is partially flexible in solution and its high degree of conformational flexibility allows recognition of the different 5-bp sequences. Efficient interactions with GC-sites occur only if a G nucleotide is located deep in the major grove, and establishes hydrogen bonds with the guanidinium group of Arg81.