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- https://bio.libretexts.org/Courses/Reedley_College/Biology_for_Science_Majors_I/03%3A_Biological_Macromolecules/3.05%3A_ProteinsProteins 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://bio.libretexts.org/Courses/University_of_California_Davis/BIS_2A%3A_Introductory_Biology_(Igo)/Winter_2018_Igo_Readings/W2018_Bis2A_Lecture05_readingpK a is defined as the negative log 10 of the dissociation constant of an acid, its K a . Therefore, the pK a is a quantitative measure of how easily or how readily the acid gives up its proton [H + ]...pK a is defined as the negative log 10 of the dissociation constant of an acid, its K a . Therefore, the pK a is a quantitative measure of how easily or how readily the acid gives up its proton [H + ] in solution and thus a measure of the "strength" of the acid.
- https://bio.libretexts.org/LibreTexts/University_of_California_Davis/BIS_2A%3A_Introductory_Biology_(Igo)/Winter_2018_Igo_Readings/W2018_Bis2A_Lecture05_readingpK a is defined as the negative log 10 of the dissociation constant of an acid, its K a . Therefore, the pK a is a quantitative measure of how easily or how readily the acid gives up its proton [H + ]...pK a is defined as the negative log 10 of the dissociation constant of an acid, its K a . Therefore, the pK a is a quantitative measure of how easily or how readily the acid gives up its proton [H + ] in solution and thus a measure of the "strength" of the acid.
- https://bio.libretexts.org/Courses/City_College_of_San_Francisco/Introduction_to_Microbiology/07%3A_Microbial_Biochemistry/7.03%3A_ProteinsAmino acids are capable of bonding together in essentially any number, yielding molecules of essentially any size that possess a wide array of physical and chemical properties and perform numerous fun...Amino acids are capable of bonding together in essentially any number, yielding molecules of essentially any size that possess a wide array of physical and chemical properties and perform numerous functions vital to all organisms. The molecules derived from amino acids can function as structural components of cells and subcellular entities, as sources of nutrients, as atom- and energy-storage reservoirs, and as functional species such as hormones, enzymes, receptors, and transport molecules.
- https://bio.libretexts.org/Courses/Portland_Community_College/Cascade_Microbiology/21%3A_Appendix_A_-_Biochemistry_Review/21.4%3A_ProteinsAmino acids are capable of bonding together in essentially any number, yielding molecules of essentially any size that possess a wide array of physical and chemical properties and perform numerous fun...Amino acids are capable of bonding together in essentially any number, yielding molecules of essentially any size that possess a wide array of physical and chemical properties and perform numerous functions vital to all organisms. The molecules derived from amino acids can function as structural components of cells and subcellular entities, as sources of nutrients, as atom- and energy-storage reservoirs, and as functional species such as hormones, enzymes, receptors, and transport molecules.
- https://bio.libretexts.org/Courses/City_College_of_San_Francisco/Introduction_to_Microbiology_OER_-_Ying_Liu/03%3A_Macromolecules/3.08%3A_Proteins_-_Building_BlocksAmino acids are capable of bonding together in essentially any number, yielding molecules of essentially any size that possess a wide array of physical and chemical properties and perform numerous fun...Amino acids are capable of bonding together in essentially any number, yielding molecules of essentially any size that possess a wide array of physical and chemical properties and perform numerous functions vital to all organisms. The molecules derived from amino acids can function as structural components of cells and subcellular entities, as sources of nutrients, as atom- and energy-storage reservoirs, and as functional species such as hormones, enzymes, receptors, and transport molecules.
- https://bio.libretexts.org/Courses/North_Central_State_College/BIOL_1550%3A_Microbiology_(2025)/03%3A_Macromolecules/3.09%3A_Protein_StructuresAmino acids are capable of bonding together in essentially any number, yielding molecules of essentially any size that possess a wide array of physical and chemical properties and perform numerous fun...Amino acids are capable of bonding together in essentially any number, yielding molecules of essentially any size that possess a wide array of physical and chemical properties and perform numerous functions vital to all organisms. The molecules derived from amino acids can function as structural components of cells and subcellular entities, as sources of nutrients, as atom- and energy-storage reservoirs, and as functional species such as hormones, enzymes, receptors, and transport molecules.
- https://bio.libretexts.org/Bookshelves/Introductory_and_General_Biology/General_Biology_1e_(OpenStax)/1%3A_The_Chemistry_of_Life/3%3A_Biological_Macromolecules/3.4%3A_ProteinsProteins 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://bio.libretexts.org/Courses/Norco_College/OpenStax_Biology_2e_for_Norco_College/03%3A_Biological_Macromolecules/3.05%3A_ProteinsProteins 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://bio.libretexts.org/Courses/Roosevelt_University/BCHM_355_455_Biochemistry_(Roosevelt_University)/04%3A_Proteins-_Structure_and_Folding/4.07%3A_The_Three-Dimensional_Structure_of_Proteins/4.7.06%3A_Intrinsically_Disordered_ProteinsFigure \(\PageIndex{9}\) below shows a simplified molecular dynamics simulation of the intrinsically disordered protein human alpha-synuclein (Uniprot ID P37840). (Molecular dynamics were discussed in...Figure \(\PageIndex{9}\) below shows a simplified molecular dynamics simulation of the intrinsically disordered protein human alpha-synuclein (Uniprot ID P37840). (Molecular dynamics were discussed in Chapter 3.4: Analyses of Protein Structure.) α-Synuclein (140 amino acids, MW 14,460) is expressed in the brain and presynaptic terminals in the central nervous system but also in more distal neurons and is involved in the regulation of neurotransmitter release and in the synaptic vesicles that ho…
- https://bio.libretexts.org/Bookshelves/Microbiology/Microbiology_(OpenStax)/07%3A_Microbial_Biochemistry/7.04%3A_ProteinsAmino acids are capable of bonding together in essentially any number, yielding molecules of essentially any size that possess a wide array of physical and chemical properties and perform numerous fun...Amino acids are capable of bonding together in essentially any number, yielding molecules of essentially any size that possess a wide array of physical and chemical properties and perform numerous functions vital to all organisms. The molecules derived from amino acids can function as structural components of cells and subcellular entities, as sources of nutrients, as atom- and energy-storage reservoirs, and as functional species such as hormones, enzymes, receptors, and transport molecules.
