Answer:
Option D
Explanation:
They are unsuitable because eukaryotic proteins before they are synthesized through transcription giving rise to mRNA and translation to proteins undergo various modifications such as splicing (removal of introns and joinimg of the exons) etc due to the presence of introns in the eukaryotic genome which is absent in bacteria.
Thus, bacteria does not have machinery that will perform this functions as it has little to no introns and the products do not have to undergo modifications like eukaryotic genome.
Thus, without this, some functional proteins will not be expressed using the bacteria expression system.
Answer:
Nuclear Localization Signal (NLS).
1. Importin
2. Nucleoporin
3. RanGTP
Explanation: The specific amino acid sequence motif that allows the selective transport of proteins having a molecular mass more than approximately 40 KDa into the nucleus is called Nuclear Localization Signal (NLS).
These proteins enter the nucleus through the Nuclear Pore Complex (NPC). The transit of the protein from the cytoplasm to the nucleus requires binding to a <u>receptor</u> called Karyopherin or Importin β, this receptor binds to the protein by <em>direct recognition of the NLS</em> sequence or through <em>an adapter </em>protein, Importin α (depending on the NLS sequence).
The passage of the complex through the NPC needs, in turn, the <em>binding of the </em><em>Importin </em><em>to the </em><em>Nucleoporins</em>, <u>proteins that form the nuclear pore</u>.
Once the complex passes through the pore, the <em>receptor-bound protein is released</em> <em>by the interaction</em> of Importin with RanGTP, an enzyme with guanosine triphosphate (GTP) hydrolytic activity.
Human chorionic gonadotropin (hCG) is secrete by the embryo early in pregnancy to keep the corpus luteum for dying. This positive feedback will maintain the corpus luteum, which secretes Progesterone and Estrogens throughout pregnancy, in order to keep the endometrium well to nourish the embryo/fetus.
Answer:
it tells you all the answers
Explanation:
