Table of Contents
- 1 What is the pathway of protein synthesis?
- 2 Which structures help in protein synthesis?
- 3 What are the 5 steps in protein synthesis?
- 4 Which intracellular structures are involved in protein production?
- 5 What is the path of a protein in a cell?
- 6 What enzymes are involved in protein synthesis?
- 7 What path does a protein in the secretory pathway take?
What is the pathway of protein synthesis?
Protein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation. Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus. It includes three steps: initiation, elongation, and termination.
Which structures help in protein synthesis?
Ribosomes are the sites in a cell in which protein synthesis takes place.
What are the 4 different structures that proteins can form?
Proteins are macromolecules and have four different levels of structure – primary, secondary, tertiary and quaternary.
What is protein pathway?
A biological pathway is a series of interactions among molecules in a cell that leads to a certain product or a change in a cell. Such a pathway can trigger the assembly of new molecules, such as a fat or protein. Pathways can also turn genes on and off, or spur a cell to move.
What are the 5 steps in protein synthesis?
Terms in this set (5)
- Unzipping. – DNA double helix unwinds to expose a sequence of nitrogenous bases.
- Transcription. A copy of one of the DNA strand is made.
- Translation (Initiation) mRNA couples w/ ribosome & tRNA brings free amino acids to ribosomes.
- Elongation. – Anticodon of tRNA recognizes codon on mRNA.
- Termination.
Which intracellular structures are involved in protein production?
Ribosomes and Endoplasmic Reticulum Ribosomes are the organelles responsible for protein translation and are composed of ribosomal RNA (rRNA) and proteins.
What are protein structures?
Protein structure is the three-dimensional arrangement of atoms in an amino acid-chain molecule. Proteins are polymers – specifically polypeptides – formed from sequences of amino acids, the monomers of the polymer. Very large protein complexes can be formed from protein subunits.
What are the 4 levels of protein structure quizlet?
The shape of a protein can be described by four levels of structure: primary, secondary, tertiary and quaternary.
What is the path of a protein in a cell?
Proteins destined to be secreted move through the secretory pathway in the following order: rough ER → ER-to-Golgi transport vesicles → Golgi cisternae → secretory or transport vesicles → cell surface (exocytosis) (see Figure 17-13). Small transport vesicles bud off from the ER and fuse to form the cis-Golgi reticulum.
What enzymes are involved in protein synthesis?
Protein Synthesis: The enzyme involved in the protein synthesis is RNA polymerase . DNA Replication: Helicase , RNA primase, and DNA polymerase are the enzymes in DNA replication.
Which part of cell responsible for protein synthesis?
The rough endoplasmic reticulum is where most protein synthesis occurs in the cell. The function of the smooth endoplasmic reticulum is to synthesize lipids in the cell. The smooth ER also helps in the detoxification of harmful substances in the cell.
What process does protein synthesis consist of?
Protein synthesis refers to the construction of proteins by the living cells. Comprising two primary parts (transcription and translation), the process of protein synthesis involves ribonucleic acids (RNA), deoxyribonucleic acid (DNA), enzymes , and ribosomes . Proteins are important organic compounds present in living organisms.
What path does a protein in the secretory pathway take?
Proteins secreted through the type II system, or main terminal branch of the general secretory pathway, depend on the Sec or Tat system for initial transport into the periplasm. Once there, they pass through the outer membrane via a multimeric (12–14 subunits) complex of pore forming secretin proteins.