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what is the sec system and how are proteins targeted there? where is the signal sequence encoded? does it matter if its at the n-terminus or c-terminus of the gene? explain why. quilet

Respuesta :

During inclusion of the expanding polypeptide chain into the ER, a signal sequence at the amino (N) terminus of secretory proteins—which targets them to the ER—is eliminated.

What is structure of gene ?

The N-terminus of several proteins contains signal sequences that help those proteins discover their proper place outside the cell membrane. For passage through the cell membrane and out of the cell, the protein is marked with a signal sequence.

  • The "N-terminus" or "amino terminus" refers to the chain's free amine end, while the "C-terminus" or "carboxyl terminus" refers to the chain's free carboxylic acid end. These two protein termini are chemically distinct from one another, therefore it makes sense that they would have various chemical properties.

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