In order to have its n-terminus extending into the cytoplasm, the cftr protein must have contained a(n) as the first signal peptide encountered in the primary sequence.

In order to have its n-terminus extending into the cytoplasm, the cftr protein must have contained a NBD as the first signal peptide encountered in the primary sequence.

Explanation:

Cystic Fibrosis Trans-membrane conductance regulator (CFTR) exhibits the two domain swap structure and is a protein found in the pancreas, intestinal and respiratory epithelia. The N-terminal signal functions as a first signal peptide.

CFTRs helps in up taking nutrients in prokaryotes and export variety of substrates in the eukaryotes. This NBD nucleotide binding domain acts as the first signal peptide to be encountered in the primary sequence.

what subject is this

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.