Keratin

... 1 Mollusca Thin shell Mollusks / molluscs Muscular foot and mantle round shell 112,000[9] Nematoda Thread like Round worms Round cross section, keratin cuticle 80 000 – 1 million Nematomorpha Thread form Horsehair worms about 320 Nemertea A sea nymph Ribbon worms about 1200 Onychophora Claw ...

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... like that exist into the organisms?Also I don't know examples for proteins with tertiary structure so I'd like to learn some. I know that the keratin is a protein with secondary structure and hemoglobin is a protein with quaternary structure, but what about proteins with primary and tertiary ...

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becoming horny tissue (keratin); synonymous to keratinized http://www.biology-online.org/dictionary/Cornified (definition of keratin: http://www.biology-online.org/dictionary/Keratin )

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... colors of the fibers are connected to the colored wing pattern of lepidoptera. Actually fibers constitute variants with a semi parasitic nature. Keratin erosion between human hair and this semi parasitic fiber is evident. Association with the skin follicle hence stem cell is rational. The breeding ...

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... paper (cellulose) and other plant parts. Probably if they need, also stapels of cotton of our clothes. Usually they particularly prefers hairs (Keratin protein), tear liquid, shed, lymph fluids, as well the salt in the sweat, whatever confirms the settlement behavior in close proximity to welding ...

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