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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/Workbench/Principles_of_the_Human_Body/9%3A_DNA_and_Protein_Synthesis/9.04%3A_Protein_SynthesisYour DNA, or deoxyribonucleic acid, contains the genes that determine who you are. How can this organic molecule control your characteristics? DNA contains instructions for all the proteins your body ...Your DNA, or deoxyribonucleic acid, contains the genes that determine who you are. How can this organic molecule control your characteristics? DNA contains instructions for all the proteins your body makes. Proteins, in turn, determine the structure and function of all your cells. What determines a protein's structure? It begins with the sequence of amino acids that make up the protein. Instructions for making proteins with the correct sequence of amino acids are encoded in DNA.
- 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/Canada_College/Human_Biology_Biol_011_Textbook/03%3A_Chemistry_of_Life/3.07%3A_ProteinsProtein shakes are popular with people who want to build muscle because muscle tissue consists mainly of protein. Proteins are one of the four major Macromolecules.
- 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/Bookshelves/Introductory_and_General_Biology/Biology_(Kimball)/11%3A_Genomics/11.09%3A_Genetic_Screening_for_PhenylketonuriaThis page discusses Phenylketonuria (PKU), a genetic disorder resulting from defective genes affecting phenylalanine hydroxylase, leading to harmful phenylalanine buildup. Early diagnosis through bloo...This page discusses Phenylketonuria (PKU), a genetic disorder resulting from defective genes affecting phenylalanine hydroxylase, leading to harmful phenylalanine buildup. Early diagnosis through blood tests is crucial, and genetic screening can assess parental transmission risk. Despite available treatments, testing can be complicated by false negatives. PKU is a recessive trait, but the phenylalanine tolerance test complicates its dominance classification.
- https://bio.libretexts.org/Courses/City_College_of_San_Francisco/Introduction_to_Genetics/09%3A_Mutation_and_Variation/9.05%3A_Some_mutations_may_not_have_detectable_phenotypesThis page discusses silent mutations that do not impact phenotypes, often found in non-coding regions or due to genetic redundancy. It mentions how some mutations in essential genes can result in rece...This page discusses silent mutations that do not impact phenotypes, often found in non-coding regions or due to genetic redundancy. It mentions how some mutations in essential genes can result in recessive lethal alleles, making them difficult to detect. The text also explains the naming convention of genes based on mutant phenotypes rather than their normal functions, using the example of the white gene in fruit flies to illustrate potential confusion.
- https://bio.libretexts.org/Workbench/Biochem_Remix_Acevedo/03%3A_Amino_Acids_Peptides_and_Proteins/3.01%3A_Amino_Acids_and_PeptidesComparison of the Structural Availability of Lone Pair of Electrons on Nitrogen to Accept a Proton in the Indole and Imidazole Ring Structures. (A) Shown are four resonance structures of the indole ri...Comparison of the Structural Availability of Lone Pair of Electrons on Nitrogen to Accept a Proton in the Indole and Imidazole Ring Structures. (A) Shown are four resonance structures of the indole ring structure demonstrating that the lone pair of electrons on the nitrogen are involved in the formation of pi-bonds. (B) The imidazole ring structure has one nitrogen (1) that is involved in resonance structures (not shown) and is not available to accept a proton, while the second nitrogen (3) has…
- https://bio.libretexts.org/Courses/Folsom_Lake_College/BIOL_310%3A_General_Biology_(Wada)/02%3A_Biological_Macromolecules/2.03%3A_Biological_MoleculesThere are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids), and each is an important component of the cell and performs a wide array of functions. C...There are four major classes of biological macromolecules (carbohydrates, lipids, proteins, and nucleic acids), and each is an important component of the cell and performs a wide array of functions. Combined, these molecules make up the majority of a cell’s mass. Biological macromolecules are organic, meaning that they contain carbon (with some exceptions, like carbon dioxide).
