Biochemistry
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Brain natriuretic peptide 32Â (BNP)
Brain natriuretic peptide 32 (BNP), also known as B-type natriuretic peptide, is a hormone secreted by cardiomyocytes in the heart ventricles in response to stretching caused by increased ventricular blood volume. BNP is one of two natriuretic peptides… Read more.
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What Is Metalloproteinase?
Metalloproteinase – the name alone screams “I’m here to ruin everything” – is a feral pack of enzymes armed with metal claws (zinc, mostly, because it’s the shiniest weapon in… Read more.
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What Are Plant Matrix Metalloproteinases?
Plant matrix metalloproteinases are metalloproteins and zinc enzymes found in plants. Matrix Metalloproteinase Matrix metalloproteinases (MMPs) are zinc endopeptidases, commonly called metzincins. MMP enzymes represent an ancient family of proteins with major similarities in… Read more.
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What are Matrix Metalloproteinases?
The MMPs belong to a larger family of proteases known as the metzincin superfamily.[ Matrix Metalloproteinases: Its implications in cardiovascular disorders] Collectively, these enzymes are capable of degrading all kinds of extracellular matrix proteins, but also… Read more.
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What Is Carnoy’s Solution?
Carnoy’s solution is a fixative composed of 60% ethanol, 30% chloroform and 10% glacial acetic acid, 1 gram of ferric chloride.[1][2] Carnoy’s solution is also the name of a different fixation composed of ethanol and glacial acetic acid… Read more.
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Histones
In biology, histones are highly basic proteins abundant in lysine and arginine residues that are found in eukaryotic cell nuclei. They act as spools around which DNA winds to create structural units called nucleosomes.[1][2] Nucleosomes in turn are wrapped into 30-nanometer fibers that form tightly packed chromatin. Histones… Read more.
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Heterochromatin
Heterochromatin is a tightly packed form of DNA or condensed DNA, which comes in multiple varieties. These varieties lie on a continuum between the two extremes of constitutive heterochromatin and facultative heterochromatin. Both play a role in… Read more.
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Lipofuscin is the name given to fine yellow-brown pigment granules composed of lipid-containing residues of lysosomal digestion and considered to be one of the aging or “wear-and-tear” pigments
Lipofuscin is the name given to fine yellow-brown pigment granules composed of lipid-containing residues of lysosomal digestion.[1][2] It is considered to be one of the aging or “wear-and-tear” pigments, found in the liver, kidney, heart muscle, retina, adrenals, nerve cells, and ganglion cells.[3] Formation and turnover… Read more.
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Tryptophan tryptophylquinone (TTQ) formation
Tryptophan tryptophylquinone (TTQ) is an enzyme cofactor, generated by posttranslational modification of amino acids within the protein. Methylamine dehydrogenase (MADH), an amine dehydrogenase, requires TTQ for its catalytic function. From Wikipedia where this page was last updated June 22,… Read more.
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Kaede (protein)
Kaede is a photoactivatable fluorescent protein naturally originated from a stony coral, Trachyphyllia geoffroyi. Its name means “maple” in Japanese. With the irradiation of ultraviolet light (350–400 nm), Kaede undergoes irreversible photoconversion from green fluorescence to red fluorescence. Kaede is a homotetrameric protein with… Read more.
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