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Chapter 27

Extracellular Matrix in Animals

La matrice extracellulaire
La matrice extracellulaire
Overview In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). ...
Les glycosaminoglycanes
Les glycosaminoglycanes
Glycosaminoglycans (GAGs), also known as mucopolysaccharides, are long and linear polymers comprising of specific repeating disaccharides - the amino ...
Les collagènes sont les principales protéines structurelles de la MEC
Les collagènes sont les principales protéines structurelles de la MEC
Three main types of fibers are secreted by fibroblasts: collagen fibers, elastic fibers, and reticular fibers. Collagen fiber is made from fibrous protein ...
Collagène associé aux fibrilles
Collagène associé aux fibrilles
Fibril-associated collagens are a type of collagens present in the extracellular matrix with interrupted triple helices or FACIT (Fibril-associated ...
L’élastine est responsable de l’élasticité des tissus
L’élastine est responsable de l’élasticité des tissus
Elastic fiber contains the protein elastin along with lesser amounts of other proteins and glycoproteins. The main property of elastin is that it will ...
Les fibronectines connectent les cellules avec l’ECM
Les fibronectines connectent les cellules avec l’ECM
Fibronectin is an adhesive glycoprotein present in the extracellular matrix of embryogenic and adult tissue. These molecules primarily aid in regulating ...
Protéoglycanes matriciels et glycoprotéines
Protéoglycanes matriciels et glycoprotéines
Proteoglycans are extensively glycosylated proteins, commonly found in the extracellular matrix, interwoven with collagen fibers. Hyaline cartilage, the ...
Rôle des métalloprotéases matricielles dans la dégradation de l’ECM
Rôle des métalloprotéases matricielles dans la dégradation de l’ECM
Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for ...
Les lames basales sont la forme spécialisée de l’ECM
Les lames basales sont la forme spécialisée de l’ECM
The basal lamina is a thin extracellular layer that lies underneath the cells and separates them from other tissues. The three layers of the basal lamina ...
Les laminines sont les protéines adhésives de la lame basale
Les laminines sont les protéines adhésives de la lame basale
Laminins are heterotrimeric proteins with high molecular mass found in the extracellular matrix. Each laminin molecule is composed of three chains, viz. ...
Collagène de type IV de la lame basale
Collagène de type IV de la lame basale
Type IV collagen is a 400 nm long, network-forming collagen that acts as a barrier between the epithelial and endothelial cells. Type IV collagen  ...
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