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Cadherin and Fibronectin and pattern formation. 江宗 諭 B9902012 李建霖 B9902018. C adherin. A class of transmembrane proteins Are dependent on Ca 2+ to function Including cadherins , protocadherins , desmogleins , desmocollins , and more. The structure of cadherin.
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Cadherin and Fibronectin and pattern formation 江宗諭 B9902012 李建霖 B9902018
Cadherin • A class of transmembrane proteins • Are dependent on Ca2+ to function • Including cadherins, protocadherins, desmogleins, desmocollins, and more.
The structure of cadherin • The cadherins are synthesized as a precursor polypeptide • It contains a conserved HAV sequence
Regulation of expression and signal transduction • Cadherins may be involved in invasion and metastasis of tumor cell
Fibronectin • a high-molecular weight extracellular matrix glycoprotein(ch.6 p.120) • Two types are present in vertebrates: 1. soluble plasma fibronectin 2. insoluble cellular fibronectin • Plays a important role in many areas 1.生理作用 2.導致疾病 EXTRACELLULAR FLUID Fibronectin CYTOPLASM
Fibronectin - structure • exists as a dimer • consists of two polypeptide chains - linked by a pair of C-terminal disulfide bonds
Fibronectin - function • Fibronectin has numerous functions that ensure the normal functioning of vertebrate organisms. • Example: embryogenesis
embryogenesis • 協助細胞移動(migration)、充當軌道 • inactivating the gene for fibronectin results in early embryonic lethality