Asked in Biology, Genetics, Biochemistry
What is the difference between free form and peptide bonded amino acids?
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Asked in Biology, Genetics, Chemical Bonding
What organelle is making peptide bonds to join the amino acids of insulin?
Rough endoplasmic reticulum. The peptide bonds are actually formed by an structure called a ribosome. This is capable of making peptide bonds whether it is attached to the endoplasmic reticulum or free floating in the cytoplasm - but it isn't a organelle. However, the rough endoplasmic reticulum is a membrane-bound organelle which has a surface which is studded with ribosomes. ...
What is responsible for joining amino acids together druring protein synthesis?
The ribosomes of the cell are responsible for joining the amino acids together during protein synthesis. The ribosomes can be found attached to the rough endoplasmic reticulum or floating free in the cytoplasm. Amino acids are joined together by peptide bonds to form proteins, and the type of proteins synthesized by a cell is dictated by the DNA. ...
Asked in Health, Microbiology, DIY Projects
What is the sequence of amino acid?
Peptide sequence or amino acid sequence is the order in which amino acid residues, connected by peptide bonds, lie in the chain in peptides and proteins. The sequence is generally reported from the N-terminal end containing free amino group to the C-terminal end containing free carboxyl group. Peptide sequence is often called protein sequence if it represents the primary structure of a protein. ...
How tRNA and mRNA work together to result in the right amino acids in the right sequence as a protein is synthesized?
During translation, tRNA anticodons pair with the complementary mRNA codons at the ribosomes. Each tRNA molecule carries with it an amino acid according to its specific code. As each tRNA releases its amino acid, peptide bonds form between the amino acids. After each tRNA releases its amino acid, it is free to pick up another amino acid in the cytoplasm. ...
Asked in Biology, Genetics, Biochemistry
What are the Elements and the essential elements of amino acids?
Two Part Question: Regarding Elements: Take Carbohydrates [C and H and O] and add Nitrogen and we get amino acids which are the constituent building blocks of Proteins. The essential elements of amino-acids that comprise Proteins are i) the unique -C-C-N-C-C-N-C-C-N- [poly] - Peptide Bonds, and ii) the side chain [also called the -R group] that is attached to the free [outward pointing] Nitrogen bond. ...
Asked in Chemistry
What funtional group will give a positive results with ninhydrin reagents?
Amino acids with a free -NH2 group and proteins containing free amino acids ...
In what cell organelle are amino acids joined together?
Amino acids are joined together in the ribosomes of cells. There are two types of ribosomes: free and bound. Both join amino acids. ...
Asked in Biology, Genetics, Acids and Bases
What is basis nature amino acids?
As proteins are amino acids so all peptides and polypeptides are polymers of amino acids. There are 20 amino acids that are relevant to the make-up of mammalian proteins Several other amino acids are found in the body free or in combined states (i.e. not associated with peptides or proteins). ...
How does an amino acid become a polypeptide?
Reactions As amino acids have both a primary amine group and a primary carboxyl group, these chemicals can undergo most of the reactions associated with these functional groups. These include nucleophilic addition, amide bond formation and imine formation for the amine group and esterification, amide bond formation and decarboxylation for the carboxylic acid group. The multiple side chains of amino acids can also undergo chemical reactions. The types of these reactions are determined by the groups on these side chains and are discussed...
Asked in Genetics, Biochemistry, Digestive System
What is the usual substrate for pepsin and what subunits are formed by pepsin activity?
The substrate is proteins, and the products are peptides. Pepsin is a protease, i.e. an enzyme that catalyzes the breakdown of proteins. In humans, it is secreted by certain cells (called chief cells) in the lining of the stomach. Specifically, pepsin breaks the peptide bonds linking amino acids in the chains found in proteins. Pepsin cannot break all peptide bonds, however. It is particularly efficient at hydrolyzing the bonds on the C-terminal side of tyrosine, phenylalanine, and tryptophan. It does not attack bonds involving...
Asked in Nutrition, Human Anatomy and Physiology
What is trypsin and lipase?
trypsin is pancreatic proteolytic enzyme that specifically cleaves peptide bonds at carboxyl group of lysine and arginine Lipase is pancreatic enzyme catalyzes the hydrolysis of triglycerides into beta-monoglyceride and two free fatty acids. ...
Asked in Biology, Chemistry, Biochemistry
Does ninhydrin react with proline?
Yes. Within "The Chemical Reactions of Amino Acids / Reactions of Amino Groups" there are several examples - one of which is the ninhydrin reaction. A very widely applied reaction of the alpha amino group [that is the N in the peptide bond -CCN-CCN-], it is used to estimate the quantity of amino acids [in a sample] in very small amounts. All amino acids and polypeptides with a free alpha group react with ninhydrin and yield [or produce] an intensely purple colored product...
Where is amino acid found in the cell?
All proteins in the cell are composed of amino acids. Proteins perform numerous functions in the cell, and can be found all throughout the cytosol and in the cellular membrane. Free amino acids will be floating in the cytosol. ...
Asked in Biology
Why do saturated fatty acids have structures while unsaturated fatty acids have bent structures?
Because unsaturated fatty acids have many double bonds and the atoms cannot rotate freely around those double bonds. In the saturated fatty acids, there are no double bonds (only single bonds) and so the atoms are free to rotate. ...
Asked in Chemistry, Scavengers
Why do amino acids act as free radical scavengers and what is the mechanism?
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