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Sulfate
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Which element is NOT characteristic of the primary structure of proteins?
Phosphorus is not a primary characteristic of protein structure. Proteins do many things within a cell, such as molecule transport and storage.
Do all proteins have quandary structure?
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.
What is the three dimensional Structure of Keratin?
Keratin is a protein, so it has both a primary and secondary structure. In fact, all proteins have a primary and secondary structure, along with a tertiary and quaternary structure. There are many different ways proteins can be structured and shaped, so biochemists divide proteins into 4 separate parts or structures.
What is the structure of a chromosomes?
Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
What are the names and description of the four structures of proteins?
If meaning the four structural levels in proteins, then these are:* Primary structure, which is the sequence of amino acids in the peptide chain that constitutes the protein. * Secondary structure, is the location of formations called alpha-helices, beta-sheets and coiled coils (undefined, flexible structure), that forms with the help of hydrogen bonds between amino acids. * Tertiary structure: This is the over-all fold/structure of one peptide chain/protein, which can consist of many so called "domains" of typical structures of alpha-helices and beta-sheets. * Quaternary structure: Because some proteins are formed from many smaller subproteins (that is, by many peptide chains), quaternary structure describe how these subunits are assembled together.
Why are diamonds not considered minerals?
Diamond fits the definition of a mineral in that it is naturally occurring, a solid, composed of an element or combination of elements, and has a crystalline structure. Many minerals contain carbon. Graphite, the mineral, is also pure carbon but with a different crystalline structure.
How proteins are suited for their roles as receptor molecule?
Mark scheme: - Many different sorts of proteins - Different primary structure/sequences of amino acids - Tertiary structure - Shape; allowing formation of receptor/binding site/site into which substrate/substrate fits
Which structure produces proteins?
Your question is ambiguous - the previous answer applies if your question was "Which structures do proteins produce?" However, if your question was actually "Which cellular structure produces proteins?", then you are looking for the ribosome. This is a huge molecular complex which is itself made of RNA and proteins. Ribosomes float around in the cytoplasm, but many of them are also attached to the rough endoplasmatic reticulum.
Do cells make proteins on small structures called amino acids?
The right question would be, "Do cells make proteins FROM small structures called amino acids?" The short answer is, yes. If your interested in how look up the Hierarchy of Protein Structures. Specifically: Primary Structure ie. the amino acid sequence Secondary Structure ie repeating folding patterns (which help determine function.) Tertiary Structure ie. many folds and patters create a 3-D shape. For some proteins this is the final structure to a functional protein (such as ribonuclease). Quaternary Structure ie. Most functional proteins are comprised of two or more polypeptides that each adopt a Tertiary Structure (see above) and then assemble with each other. When proteins consist of more than one polypeptide chain, they are said to have Quarternary Structure.
What proteins are in globular proteins?
There are two class of protein based on their structure namely fibrous and globular. Globular proteins form a globe like spherical structure in contrary to rod like fibrous proteins (collagen). They are soluble in water and the structure is rendered by its three dimensional arrangement of amino acids in solution. Most of the enzymes, soluble hormones and factors fall into this class of proteins.
Why proteins are not heriditry material?
Proteins are not hereditary material because of many reasons. Few of them are: No Uniformity in the structure: For a molecule to be carrier of heredity, It is important that its structure should remain universal. While, there is a lot of structural variation in the proteins, the structure of DNA is fairly same. The difference of the protein contents of the cells: Different cells in the same organism have different proteins and at different times in the same cells, the protein content varies. The DNA content of the all the cells in an organism are same irrespective of their location in body and time.
What mineral group is turquoise in?
Opals are not truly minerals (because they don't have a crystalline structure), they are in a class called mineraloid. A mineraloid is an amophous, inorganics substance that lacks a crystalline structure, but are mineral in nature. You will find that in many older reference systems, they may well be classed as minerals.
