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Showing 1 to 20 of 38 for “"Antifreeze"”.
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Freezing Avoidance of Antarctic Fishes: The Role of a Novel Antifreeze Potentiating Protein and the Antifreeze Glycoproteins
AFPP is a 15.5 kDa protein with an unbiased amino acid composition. It was found in all the Antarctic notothenioid fishes examined, at different concentrations. It was most abundant in the shallow water fishes swimming in ice-laden water, but was present at concentrations ten fold less in the …
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Antifreeze Peptides and Glycopeptides in Polar Fishes
… studies are concerned with the relationship of antifreeze peptides and glycopeptides to the processes of osmoregulation and reproduction in polar fishes. Polar fishes, like many marine teleosts, have serum osmolalities which are lower than that of sea water. As a result of being hypoosmotic to …
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Tracing The Origin Of A Lectin-like Antifreeze Protein
Type II antifreeze proteins (AFPs) are C-type lectin homologs found in three lineages of teleost fish (Cottidae, Clupeiformes and Osmeriformes). Previous work demonstrated that the AFP gene was horizontally transferred from the Atlantic herring to the smelt, and also showed that the herring is not …
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"Characterization of an antifreeze glycopeptide gene from the Antarctic cod, Notothenia neglecta, and a functional study of the ""pre-"" sequence of this antifreeze glycopeptide"
… synthesizes a series of 8 different-sized antifreeze glycopeptides (AFGP 1 to 8) which lower the freezing point of its body fluids below that of sea water. I report here the sequence of one of its AFGP genes. The structural gene contains 46 tandemly repeated segments, each coding for one …
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Characterization of the primary structure of a size-variant antifreeze peptide and the organization and structure of antifreeze peptide genes from the Antarctic eel pout Rhigophila dearborni
… Rhigophila dearborni synthesizes three major antifreeze peptides (AFPs) which have been designated RD1, RD2 and RD3, and at least four minor ones. RD1 and RD2 both are 64 residues with a molecular weight (M.W.) of about 7000 Daltons. RD3 however appears to be twice as large with a M.W. of …
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Antifreeze Glycoproteins of Two Unrelated Polar Fishes: Gene Structure, Organization and Evolution
The AFGPs of the northern cods are also encoded by a family of polyprotein genes in which multiple AFGP coding sequences linked in tandem by small cleavable spacers Args or Arg-Ala-Ala-Arg's. However, the northern cod AFGP genes show no sequence identity with trypsinogen gene, indicating …
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Antifreeze Glycopeptides of Antarctic Fish: Comparative Aspects of Their Biochemistry and Physiology
The presence of antifreeze glycopeptides (AFGPs) in the blood of polar fishes allows fish to live in ice-laden seawater at a temperature below what colligative properties would dicate to be the freezing point of their blood. AFGPs are well-characterized from two antarctic species, Pagothenia …
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Effect of environmental temperature on Antarctic fish antifreeze protein activity and concentration
… attributable in part to the evolution of blood antifreeze proteins (AFPs) that adsorb to the surface of internalized ice crystals and inhibit their growth. The non-colligative depression of the blood serum freezing point can contribute enough protection to prevent freezing down to or below the …
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Circulatory Conservation of Anionic Antifreeze Peptides in the Glomerular Winter Flounder (Pseudopleuronectes Americanus)
… in this report strongly argue that the anionic antifreeze peptides of the winter flounder are conserved in the circulation because they are repelled from anionic sites located in the walls of the glomerular capillaries of the winter flounder kidney.
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Characterization of the antifreeze peptide system of the Antarctic eel pout, Pachycara brachycephalum
… (suborder Zoarcoidei) produces essentially one antifreeze peptide (AFP) that is maintained at high serum levels. The AFP gene family of the species was characterized to elucidate the basis of its particularly homogeneous AFP complement, as compared with other zoarcoids. Six AFP genes were …
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The economics of sugar hydrogenloysis for the commercial production of an automotive antifreeze
… together, and its suitability as an automotive antifreeze was tested. AB far as viscosity and freezing point depression were concerned, such an automotive antifreeze compares favorably with ethylene glycol. The economics of the process were studied, and a tentative plant was designed to produce …
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Thiomaleic anhydride: a linchpin for organic synthesis and structural verification of a nonprotein antifreeze oligosaccharide
… verification of the structure of a nonprotein antifreeze oligosaccharide by the total synthesis of various authentic oligosaccharides and the comparison of spectroscopic data.</p> <p> Chapter one starts with the introduction of the general characteristics and reactivity of thioacids, and their …
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Analysis of the antifreeze glycoprotein containing genomic locus in the Antarctic notothenioid fish dissostichus mawsoni
… radiation was linked to the evolution of antifreeze glycoproteins (AFGPs). High blood levels of AFGPs (25 to 35 mg/ml) lower their freezing point a few tenths of a degree below that of seawater (-1.86oC) and are a vital part of their freeze avoidance strategy. The AFGP gene evolved from a …
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Ice control by antifreeze proteins: From interfacial thermodynamics, and engulfment resistance, to thermal hysteresis activity using theory and computation
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-08-01
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Creating sense from non-sense DNA: de novo genesis and evolutionary history of antifreeze glycoprotein gene in northern cod fishes (gadidae)
… Seven gadid species are known to have evolved antifreeze glycoproteins (AFGPs) that enable their survival from inoculative freezing by environmental ice in frigid Arctic and sub-Arctic waters. AFGPs protect the fish from freezing death by binding to ice crystals and arresting ice growth within …
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Anti-Freeze: High-Quality Adaptive Live Streaming with Real-time Transcoder
… to address the real-time challenge and propose Antifreeze, a complete end-to-end solution for real-time transcoding and streaming. We propose a machine-learning solution to estimate the transcoding time and resource requirement, which is used to direct our real-time transcoder to transcode video …
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Comparative antifreeze trait analyses of Antarctic and temperate sister species pairs shed light on tempo of adaptive trait loss under relaxed selection
… Southern Ocean survive by having evolved antifreeze glycoproteins (AFGP). Over evolutionary time several lineages have escaped the isolated frigid Southern Ocean to north of the Antarctic Polar Front and successfully colonized temperate sub-Antarctic waters. This study investigates the …
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Unnatural glycopeptides with application on cancer research
… cancer: mucins, such as mucin-1 (MUC1), and antifreeze glycoproteins. Concerning the first mentioned class, mucins are a family of O-glycoproteins with high molecular weight that serve as cell-surface receptors and sensors. Notably, aberration in the glycosylation of this tandem repeats is …
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