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How can you distinguish between primary secondary tertiary and quaternary structures of proteins and can you give an example of each?
Wiki User
∙ 12y ago
Primary structure of proteins refers to the exact sequence of the amino acids in the polypeptide chain. Secondary structure refers to the shape acquired by the backbone of the polypeptide chain when hydrogen bonds form between the carboxylic group of one amino acid and the amide group of another amino acid. there are two shapes in secondary structured proteins: Alpha Helix and Beta-pleated sheet tertiary structure refers to the shape taken up by the polypeptide chain as a result of bonds formed between the R-groups of the amino acids. three types of bonding may exist: Hydrgen bond, ionic bond and /or disulphide bonds.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agothe primary structure of a protein is its linear
sequence of amino acids. In discussing protein structure, three further levels of structural complexity are customarily invoked:
• Secondary structure is the local spatial arrangement of a polypeptide's
backbone atoms without regard to the conformations of its side chains.
• Tertiary structure refers to the three-dimensional structure of an entire polypeptide.
• Many proteins are composed of two or more polypeptide chains,
loosely referred to as subunits. A protein's quaternary structure refers
to the spatial arrangement of its subunits.
Wiki User
∙ 13y agoPrimary Protein is that in which different amino acids are arranged in linear sequence. e.g Typical inter-cellular proteins.
Secondary Protein is that in which different amino acids are arranged in the form of Helix.
Tertiary Proteins are those which have folded into 3D folds e.g many enzymes
Quaternary Proteins contain usually more than one chain of polypeptides which are arranged in 3D folds e.g in Hemoglobin molecule.
Wiki User
∙ 14y agoThe primary structure is when there is the stringing together of the requisite number of amino acids in a chain called a polypeptide chain.
The secondary structure is when the side chains hydrogen bond resulting in alpha helix's and beta sheets.
The tertiary structure results when there is R group binding and other interactions that fold the chain into its final three dimensional globular form, ( the true protein stage ) These can be hydrophobic and hydrophlilic interactions, hydrogen bonding, or a disulphide bridge, the covalent bond between two sulfurs.
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Is collagen a secondary or tertiary structure?
With most proteins, it has a secondary and tertiary structure.
Do proteins have hydrogen bonds?
H bonding is not present in primary n secondary structure of a protein how ever in tertiary and Quaternary its present to give protein stability
Do antibodies have a quaternary structure?
No. It is possible for an enzyme to have a quaternary structure, but it strictly depends on the enzyme. For example, β-galactosidase, more commonly known as lactase, is the enzyme that breaks the β linkage between the disaccharide lactose into its componenets glucose and galactose. β-galactosidase is a tetramer, meaning it has four subunits. This is an example of an enzyme with a quaternary structure. Enzymes can also be tertiary structures, meaning only one subunit. The quaternary structure is just made up of more than one tertiary structures. Depending on the enzyme, it can either function with only one amino acid chain coiled into a conformation (tertiary) or a group of amino acid chains coiled into a conformation (quaternary).
Proteins with more than one polypeptide chain have what structure?
These have quaternary structure. This is the overall shape of all the chains combined. The 3D shape of one polypeptide chain is the tertiary structure.
Why protein is called primary structure?
Proteins *have* primary, secondary, tertiary, and quarternary structures. The primary structure is simply the chain of amino acids without any other structure. Secondary structure results from folding of the chain to form rudimentary structures such as alpha helices, beta sheets and turns. Tertiary structure results from the further folding of the protein with secondary structures into different 3D shapes by interactions between different parts of the secondary structure. Quarternary structure results from different proteins with tertiary structures coming together to form a protein complex.
Do you expect proteins in urine to be in primary secondary and tertiary structures?
Probably in tertiary structures as primary and secondary structures are those structures seen during the formation of proteins and tertiary proteins are mature proteins.
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.
Is collagen a secondary or tertiary structure?
With most proteins, it has a secondary and tertiary structure.
How are proteins distugushed from each other?
They have different primary, secondary, tertiary, and quaternary structure.
What are the uses of Swiss Prot?
Swiss-Prot is a computer program that reads and annotates certain protein sequences. It is used to describe the protein functions and diseases, along with similarities to other proteins, and secondary and quaternary structures.
What subunit make up protein?
Amino acids are the building blocks of proteins. A linked of amino acids greater than 50 is a polypeptide, which can be grouped into primary, secondary, tertiary and quaternary structures.
When refrring to class of substances that have primary secondary and tertiary structures?
Proteins?
Which of these proteins in mammals show only primary and secondary structures?
Keratin
What proteins in mammals show only primary and secondary structures?
keratin
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 are some important factors in enzyme structure?
Enzymes are almost all proteins. They are often globular proteins. We can describe them in terms of their primary, secondary, tertiary and quaternary structure. They are long chains of amino acid units held together by peptide bonds, looped and folded into secondary and tertiary structures by disulfide bonds, hydrophobic interactions, and salt bridges.
What are helix proteins?
There are no known proteins such as helix proteins. Alpha helix is a secondary structure element found in proteins that formed by amino acids which can form helix. Other secondary structures are beta sheets and random coils.
