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Q: Alpha helices and beta-pleated sheets are examples of .?
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What does a protein's alpha helices and beta sheets fold together to create?

The question should be "what do alpha helices and beta sheets create?" They form the tertiary structure of proteins.


Name three typical shapes of protein molecules?

right handed alpha helices, left handed alfa helices, and beta sheets


Where can one find more information about alpha helices?

One can find information about alpha helices in your local library.You could find about all other helices in that category and how they are used in life.


What type of structure does hemoglobin have?

Alpha helices


What type of secondary structure does hemoglobin have?

Alpha helices


What can form a structure such as a helix or a sheet?

A polypeptide chain, which is the primary structure of a protein, can fold into secondary structures such as an alpha-helix or a beta-sheet.


What structure describes the alpha-helices and beta-sheets that are formed by hydrogen bonding vetween backbone atoms located near each other in the polypeptide chain?

This bonding is done in the secondary structure of the protein.


What are the example of structural protein?

Hemoglobin - formed with alpha helices and/or beta sheets, but as one, contiguous polypeptide. Superoxide dismutase would be a good example of a quaternary structure protein, since it is made of more than one polypeptide chain.


What are proteins secondary structures?

Unlike the primary structure, the secondary structure is defined as the local conformation of the protein's backbone. Protein secondary structures are grouped in three major types: helices (being the most common the alpha helices), pleated sheets (also called beta structures), and turns.The combination of these three kind of secondary structures give a wide variety of forms of the protein molecules. These combinations are named supersecondary structures or motifs and occur in many unrelated globular proteins. As examples of motifs found in protein structures are: a) the beta-alpha-beta motif, the most common supersecondary structure (consists in a right-handed cross-over connection between two consecutive parallel strands of a beta sheet by an alpha helix); b) the beta hairpin motif, that consists of an antiparallel beta sheet formed by sequential segments of polypeptide chain that are connected by relatively tight reverse turns; c) the alpha-alpha motif, two successive antiparallel alpha helices pack each other with their axes inclined (one common protein with this structure is the alpha keratin); and d) the beta barrels, that are extended beta sheets that often roll up.


What are the two most common secondary structures in a protein?

The two types of tertiary protein structures: globular and fibrous proteins. Globular proteins act as enzymes that catalyze chemical reactions in organisms. Fibrous proteins like collagen play structural role.


What five forces are responsible for stabilisation of protein tertiary structure?

There's a few but some of them are:- hydrogen bonding hydrophobic interactions electrostatic interactions van der waals forces disulphide forces salt bridges.


How is a hydrogen bond used in making a protein?

The bases of the various amino acids are hydrogen bonded in the secondary structure of protein synthesis. Alpha helices and beta sheets are formed. This is the step before the various R groups start bonding and folding the protein into a globular shape in the tertiary structure.