1. The processes of denaturation and coagulation of hemoglobin are like those of other proteins. 2. When hemoglobin is denatured it is probably depolymerized into hemochromogen. 3. When other proteins are denatured they, too, are probably depolymerized. Conversely, native proteins can be regarded as aggregates of denatured proteins. 4. The globins and histones are to be regarded as denatured proteins rather than as a distinct group of proteins. 5. The factors affecting the equilibrium between native and denatured proteins have been considered. 6. A non-polar group is uncovered when a protein is denatured. 7. It has been shown that judged by the two most sensitive tests for the specificity of proteins, it is only when proteins are in the native form that they are highly specific.
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http://dx.doi.org/10.1085/jgp.9.2.169 | DOI Listing |
Chem Sci
January 2025
Department of Chemical and Biological Physics, Weizmann Institute of Science Rehovot 761001 Israel
Proteins often harness extensive motions of domains and subunits to promote their function. Deciphering how these movements impact activity is key for understanding life's molecular machinery. The enzyme adenylate kinase is an intriguing example for this relationship; it ensures efficient catalysis by large-scale domain motions that lead to the enclosure of the bound substrates ATP and AMP.
View Article and Find Full Text PDFCell Biochem Biophys
January 2025
Department of Zoology, MMV, Banaras Hindu University, Varanasi, 221005, UP, India.
Putranjiva roxburghii is an important medicinal plant utilized for remedy of female reproductive ailments. Its seed extract is being used as a uterine health booster due to the presence of several pharmaceutically important phytochemicals. However, the presence of phytochemicals in its leaf is still unexplored.
View Article and Find Full Text PDFAdv Clin Exp Med
January 2025
Acupuncture and Tuina College, Guizhou University of Traditional Chinese Medicine, Guiyang, China.
Background: Chronic soft tissue injury is characterized by sterile inflammation and pain. Gua sha with Masanggoubang oil (GSMO) treatment has been found to possess anti-inflammatory and analgesic effects.
Objectives: To explore the mechanism of GSMO in chronic soft tissue injuries.
Our current understanding of protein folding is based predominantly on studies of small (<150 aa) proteins that refold reversibly from a chemically denatured state. As protein length increases, the competition between off-pathway misfolding and on-pathway folding likewise increases, creating a more complex energy landscape. Little is known about how intermediates populated during the folding of larger proteins affect navigation of this more complex landscape.
View Article and Find Full Text PDFIndiana Univ J Undergrad Res
June 2024
Department of Biochemistry and Molecular Biology, Indiana University School of Medicine.
Angiomotins (Amots) are a family of adaptor proteins with important roles in cell growth, migration, and proliferation. The Amot coiled-coil homology (ACCH) domain has a high affinity for non-phosphorylated and mono-phosphorylated phosphatidylinositol which provides specificity in the membrane association. The membrane specificity is linked with targeting and recycling of the membrane protein to maintain normal cell phenotypes and function.
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