The dermis is composed of a meshwork of collagen-rich fibrous connective tissue. Collagen is the primary structural protein of the dermis.Aug 13, 2020
What proteins do skin cells produce?
Keratin, a protein inside skin cells, makes up the skin cells and, along with other proteins, sticks together to form this layer.
Is skin and connective tissue?
Skin is made up of connective tissue that consists of cellular components and an extracellular matrix.
What type of protein is found in cartilage or tendons?
Collagen Collagen is a rigid, inextensible fibrous protein that is composed of three intertwined polypeptide chains and is a principal constituent of connective tissue in animals, including tendons, cartilage, bones, teeth, skin, and blood vessels. Collagen is the most abundant protein in vertebrates.
What is the deepest region of the epidermis gives rise to all the epidermal cells?
The stratum basale (also called the stratum germinativum) is the deepest epidermal layer and attaches the epidermis to the basal lamina, below which lie the layers of the dermis. The cells in the stratum basale bond to the dermis via intertwining collagen fibers, referred to as the basement membrane.
Is keratin a structural protein?
keratin, fibrous structural protein of hair, nails, horn, hoofs, wool, feathers, and of the epithelial cells in the outermost layers of the skin. Keratin serves important structural and protective functions, particularly in the epithelium.
What is the protein structure of keratin?
α-keratin is a fibrous structural protein, meaning it is made up of amino acids that form a repeating secondary structure. The secondary structure of α-keratin is very similar to that of a traditional protein α-helix and forms a coiled coil.
Is skin connective or epithelial tissue?
For example, the skin is composed of a layer of epithelial tissue (epidermis) that is supported by a layer of connective tissue. It protects the internal structures of the body from damage and dehydration. Epithelial tissue also helps to protect against microorganisms.