Results 61 to 70 of about 7,289 (188)

Melanins in fungi: Types, localization and putative biological roles [PDF]

, 2021
Melanin is a secondary metabolite made up by complex heterogeneous polymers. Several classes of fungal melanins have been described like γ-glutaminyl-3,4-dihydroxy-benzene (GDHB)-, L-DOPA-(eumelanin), DHN-, catechol-melanin, pyomelanin, p-aminophenol ...
Saparrat, Mario Carlos Nazareno, Balatti, Pedro Alberto, López, Silvina Marianela Yanil, Toledo, Andrea Vanesa, Franco, Mario Emilio Ernesto, Troncozo, María Inés   +5 more
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MELANINS PRODUCTION FROM ENKEPHALINS BY TYROSINASE

, 1992
Leu-enkephalin and Met-enkephalin are oxidized in vitro by mushroom and sepia tyrosinase giving rise to synthetic melanins whose production is dependent on incubation time and on enzyme concentration.
M. A. Rosei, C. De Marco, MOSCA, Luciana
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The role of melanin production in the survival of Vibrio cholerae in the marine environment [PDF]

, 2006
Word processed copy.Includes bibliographical references (p. 141-165).The marine bacterium Vibrio cholerae produces pyomelanin through the catabolism of L-tyrosine to homogentisic acid.
Paul, Lynthia Vivienne
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Analysis of melanins

, 1998
Mammalian melanins are of two major types, eumelanins and peheomelanins, which often occur together, then called mixed-type melanins. A method has been developed for analysing the various forms of melanins.
Lund University., Odh Olsson, Gerd,
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Chemical Characterization of Hair Melanins in Various Coat-Color Mutants of Mice [PDF]

, 1995
Mammalian melanins exist in two chemically distinct forms: the brown to black eumelanins and the yellow to reddish pheomelanins. Melanogenesis is influenced by a number of genes, the levels of whose products determine the quantity and quality of the ...
Ozeki, Hiroyuki, Hirobe, Tomohisa, Wakamatsu, Kazumasa, Ito, Shosuke   +3 more
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Synthesis and characterization of allomelanin model from 1,8-dihydroxynaphthalene autooxidation

Scientific Reports
In this work a novel method for synthesis of 1,8-dihydroxynaphthalene melanin was presented, as well as the physicochemical properties, molecular structure, and characteristics of the pigment.
Jan Pukalski, Krystian Mokrzyński, Marek Chyc, Marek J. Potrzebowski, Tomasz Makowski, Mateusz Dulski, Dariusz Latowski   +6 more
doaj   +1 more source

Some biochemical properties of melanins from opioid peptides

, 1994
Opioid peptides are converted by mushroom tyrosinase into melanin-like compounds retaining the peptide moiety (opio-melanins). Opio-melanins, owing to the presence of the linked aminoacids and in contrast with DOPA-melanin, are soluble compound.
BLARZINO, Carla, COCCIA, Raffaella, M.A. Rosei, G. Musci, MOSCA, Luciana, Musci, Giovanni, DE MARCO, Carlo   +6 more
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The pbrB gene encodes a laccase required for DHN-melanin synthesis in conidia of Talaromyces (Penicillium) marneffei. [PDF]

PLoS ONE, 2015
Talaromyces marneffei (Basionym: Penicillium marneffei) is a significant opportunistic fungal pathogen in patients infected with human immunodeficiency virus in Southeast Asia. T. marneffei cells have been shown to become melanized in vivo.
Ariya Sapmak, Kylie J Boyce, Alex Andrianopoulos, Nongnuch Vanittanakom   +3 more
doaj   +1 more source

Evidence of Unprecedented High Electronic Conductivity in Mammalian Pigment Based Eumelanin Thin Films After Thermal Annealing in Vacuum

Frontiers in Chemistry, 2019
Melanin denotes a variety of mammalian pigments, including the dark electrically conductive eumelanin and the reddish, sulfur-containing, pheomelanin.
Ludovico Migliaccio, Paola Manini, Davide Altamura, Cinzia Giannini, Paolo Tassini, Maria Grazia Maglione, Carla Minarini, Alessandro Pezzella   +7 more
doaj   +1 more source

Estudo da afinidade da melanina pelo ion Fe(III) [PDF]

, 2009
TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Curso de Química.Melanina é um pigmento escuro formado pela oligomerização de moléculas, com grupos majoritários catecol e quinone-imina, provenientes da ...
Costa, Thiago Guimarães
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