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- https://chem.libretexts.org/Courses/East_Tennessee_State_University/CHEM_4110%3A_Advanced_Inorganic_Chemistry/11%3A_Bioinorganic_Chemistry/11.02%3A_Introduction_to_Amino_Acids_and_ProteinsThere are twenty different side chains in naturally occurring amino acids, and it is the identity of the side chain that determines the identity of the amino acid: for example, if the side chain is a ...There are twenty different side chains in naturally occurring amino acids, and it is the identity of the side chain that determines the identity of the amino acid: for example, if the side chain is a -CH 3 group, the amino acid is alanine, and if the side chain is a -CH 2 OH group, the amino acid is serine.
- https://chem.libretexts.org/Courses/Oregon_Institute_of_Technology/OIT%3A_CHE_333_-_Organic_Chemistry_III_(Lund)/New_Page/1%3A_Introduction_to_Organic_Structure_and_Bonding_I/1.3%3A_Structures_of_some_important_biomolecules/1.3.0%3A_Introduction_to_Amino_Acids_and_ProteinsProteins are polymers of amino acids, linked by amide groups known as peptide bonds. An amino acid can be thought of as having two components: a 'backbone', or 'main chain', composed of an ammonium gr...Proteins are polymers of amino acids, linked by amide groups known as peptide bonds. An amino acid can be thought of as having two components: a 'backbone', or 'main chain', composed of an ammonium group, an 'alpha-carbon', and a carboxylate, and a variable 'side chain' (in green below) bonded to the alpha-carbon.
- https://chem.libretexts.org/Courses/Roosevelt_University/General_Organic_and_Biochemistry_with_Problems_Case_Studies_and_Activities/14%3A_Proteins/14.02%3A_Amino_AcidsProteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or pr...Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective; they may serve in transport, storage, or membranes; or they may be toxins or enzymes. Each cell in a living system may contain thousands of proteins, each with a unique function. Their structures, like their functions, vary greatly.
- https://chem.libretexts.org/Courses/Georgia_Southern_University/CHEM_1152%3A_Survey_of_Chemistry_II_(Osborne)/08%3A_Proteins/8.03%3A_PeptidesThe amino group of one amino acid can react with the carboxyl group on another amino acid to form a peptide bond that links the two amino acids together. Additional amino acids can be added on through...The amino group of one amino acid can react with the carboxyl group on another amino acid to form a peptide bond that links the two amino acids together. Additional amino acids can be added on through the formation of addition peptide (amide) bonds. A sequence of amino acids in a peptide or protein is written with the N-terminal amino acid first and the C-terminal amino acid at the end (writing left to right).
- https://chem.libretexts.org/Courses/Earlham_College/CHEM_361%3A_Inorganic_Chemistry_(Watson)/07%3A_Bioinorganic_Chemistry/7.02%3A_Introduction_to_Amino_Acids_and_ProteinsThere are twenty different side chains in naturally occurring amino acids, and it is the identity of the side chain that determines the identity of the amino acid: for example, if the side chain is a ...There are twenty different side chains in naturally occurring amino acids, and it is the identity of the side chain that determines the identity of the amino acid: for example, if the side chain is a -CH 3 group, the amino acid is alanine, and if the side chain is a -CH 2 OH group, the amino acid is serine.
- https://chem.libretexts.org/Courses/University_of_Arkansas_Little_Rock/Chem_4320/Chem_4320%2F%2F5320%3A_Biochemistry_1/01%3A_Amino_Acids/1.2%3A_Structure_of_Amino_AcidsAmino acid monomers are chemically linked to form linear polymers known as proteins.
- https://chem.libretexts.org/Workbench/Pick_Your_Poison%3A_Introduction_to_Materials_Toxicology/28%3A_Levels_of_Organization/28.02%3A_The_Chemical_Level_of_Organization/28.2.06%3A_Organic_Compounds_Essential_to_Human_FunctioningFigure \PageIndex9: The Shape of Proteins (a) The primary structure is the sequence of amino acids that make up the polypeptide chain. (b) The secondary structure, which can take the form of an ...Figure \PageIndex9: The Shape of Proteins (a) The primary structure is the sequence of amino acids that make up the polypeptide chain. (b) The secondary structure, which can take the form of an alpha-helix or a beta-pleated sheet, is maintained by hydrogen bonds between amino acids in different regions of the original polypeptide strand. (c) The tertiary structure occurs as a result of further folding and bonding of the secondary structure. (d) The quaternary structure occurs as a result …
- https://chem.libretexts.org/Workbench/Pick_Your_Poison%3A_Introduction_to_Materials_Toxicology/25%3A_Biomolecules-_Amino_Acids_Peptides_and_Proteins/25.05%3A_Peptides_and_ProteinsThis section explores peptides and proteins, emphasizing their structure, function, and significance in biological processes. Peptides, short chains of amino acids, can form into proteins through vari...This section explores peptides and proteins, emphasizing their structure, function, and significance in biological processes. Peptides, short chains of amino acids, can form into proteins through various linkages. The diversity in protein structure leads to a wide range of functions, including enzymes, hormones, and structural components. The relationship between peptide bonds and protein folding is also highlighted, as well as how this folding affects protein functionality.
- https://chem.libretexts.org/Courses/Whitworth_University/Science_of_Food_(Russel)/08%3A_Proteins/8.05%3A_Primary_structure_of_proteinsPeptide bond, disulfide bond, their nomenclature, and their characteristics, along with the primary structure of proteins and their importance, are described.
- https://chem.libretexts.org/Courses/Roosevelt_University/General_Organic_and_Biochemistry_with_Problems_Case_Studies_and_Activities/14%3A_Proteins/14.03%3A_Primary_Structure-_PeptidesProteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or pr...Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective; they may serve in transport, storage, or membranes; or they may be toxins or enzymes. Each cell in a living system may contain thousands of proteins, each with a unique function. Their structures, like their functions, vary greatly.
- https://chem.libretexts.org/Courses/BridgeValley_Community_and_Technical_College/Fundamentals_of_Chemistry/13%3A_Introduction_to_Biochemistry/13.05%3A_Structure_of_Amino_AcidsAmino acid monomers are chemically linked to form linear polymers known as proteins.
