Vacuole or vesicles are used to transport proteins and other molecules out of cells. These secretory vesicles are actually a part of Golgi bodies. After synthesis, protein undergoes modifications in ER and Golgi, where it packaged in those vesicles.
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All proteins have structure.
The Golgi body.
No. Proteins start out as a Primary structure, which is just the linear form and sequence of amino acids. The proteins then start forming alpha helices and/or Beta sheets depending on the properties of the amino acids. This is their Secondary structure The proteins then fold completely into tertiary structure. Here, we have a lot of hydrogen bonding and hydrophobic interactions within the protein between the helices and beta sheets. Many proteins are fully functional in their tertiary structure and don't have any reason for forming into a quaternary structure. In the quaternary structure, we usually see an interaction between 2 or more polypeptides or proteins. An example would be 2 proteins in their tertiary structure binding together to become a functional dimer. If 3 proteins were interacting it would form a trimer. Several proteins are functional only in a quaternary structure while several more proteins are just fine in their tertiary structure and therefore do not have a quaternary structure.
DNA is packaged very tight by proteins. Proteins found around the DNA supports both the structure and functions. The proteins and the DNA make up the chromosomes. Proteins and DNA in animal cells are chromatin! DNA contains information because of the DNA's structure!
Prostate
Quaternary structure is the level of protein structure that is characteristic of some proteins, but not all. Quaternary structure refers to the arrangement of two or more individual protein subunits to form a larger, biologically active complex. Proteins with quaternary structure often exhibit increased functional diversity and complexity compared to proteins with simpler levels of structure.
Quarternary structure.
It is called secondary structure of proteins .
That's the primary structure.
Proteins contain chains of aminoacids.