• fibres
  • EP0806199A2 ] - Colourant for keratin fibres, based on vegetable dyes, is in the form of a colour suspension containing (a) pulverised vegetable dye(s), (b) oil(s) and (c) direct dye(s). (epo.org)
  • genes
  • Knowing that the crocodilian β-keratin genes are closely related to those of birds, the published genomes ofthe chicken and zebra finch provide an opportunity not only to compare the genomic organization of their β- keratins,but to study their molecular evolution in archosaurians. (sc.edu)
  • Results: The subfamilies (claw, feather, feather-like, and scale) of β-keratin genes are clustered in the same 5' to 3' orderon microchromosome 25 in chicken and zebra finch, although the number of claw and feather genes differs between the species. (sc.edu)
  • Phylogenetic analyses demonstrate that evolution of archosaurian epidermal appendagesin the lineage leading to birds was accompanied by duplication and divergence of an ancestral β-keratin gene cluster.As morphological diversification of epidermal appendages occurred and the β-keratin multigene family expanded,novel β-keratin genes were selected for novel functions within appendages such as feathers. (sc.edu)
  • The human genome encodes 54 functional keratin genes which are located in two clusters on chromosomes 12 and 17. (hitchhikersgui.de)
  • birds
  • Background: The epidermal appendages of reptiles and birds are constructed of beta (β) keratins. (sc.edu)
  • Conclusions: Similarity in the overall genomic organization of β-keratins in Galliformes and Passeriformes suggestssimilar organization in all Neognathae birds, and perhaps in the ancestral lineages leading to modern birds, such as theparavian Anchiornis huxleyi. (sc.edu)
  • Keratin monomers assemble into bundles to form intermediate filaments , which are tough and form strong unmineralized epidermal appendages found in reptiles , birds , amphibians , and mammals . (hitchhikersgui.de)
  • the harder β-keratins are found only in the sauropsids , that is all living reptiles and birds. (hitchhikersgui.de)
  • human
  • A composition for the oxidation dyeing of keratin fibers, such as human keratin fibers and further such as the hair, comprising, in a medium that is suitable for dyeing and that is free of glycerol and of cationic synthetic thickening polymer comprising at least one fatty chain, at least one oxidation. (google.com.au)
  • A composition for the oxidation dyeing of keratin fibers, such as human keratin fibers and further such as the hair, comprising, in a medium that is suitable for dyeing and that is free of glycerol and of cationic synthetic thickening polymer comprising at least one fatty chain, at least one oxidation dye, at least one fatty alcohol chosen from mono- and polyglycerolated fatty alcohols, and at least one particular polyol. (google.com.au)
  • 2 . The composition according to claim 1 , wherein the keratin fibre is human keratin fibre. (google.com.au)
  • A ready-to-use composition for the oxidation dyeing of keratin fibers, and, in particular, human keratin fibers such as the hair, including at least one oxidation base, at least one ammonia-generating 2-electron oxidoreductase type enzyme, and at least one donor for the enzyme, as well as a dyeing process. (google.es)
  • 2. A composition according to claim 1 , wherein said keratin fibers are human keratin fibers. (google.es)
  • form
  • Fibrous keratin molecules supercoil to form a very stable, left-handed superhelical motif to multimerise, forming filaments consisting of multiple copies of the keratin monomer . (hitchhikersgui.de)