Amino acids, Biology

Assignment Help:

 

  • An amino acid is amphiprotic (have both acid and base)

             o    Some are polar, non polar, acidic or basic

  • List of amino acids (red are non-polar, yellow are polar, green are acidic, blue are basic, starred are essential)

 

  •  An amino acid is amphiprotic (have both acid and base)

             o    Some are polar, non polar, acidic or basic

  •  List of amino acids (red are non-polar, yellow are polar, green are acidic, blue are basic, starred are essential)

 
                o    Glycine (gly)
                o    Alanine (ala)
                o    Valine (val)*
                o    Leucine (leu)*                                                                                    
                o    Isoleucine (ile)*
                o    Methionine(met)*
                o    Phenylalanine(phe)*
                o    Tryptophan (trp)*
                o    Proline (pro)

               o    Serine (ser)

 

                                                                1512_properties of Amino Acids.png1568_Amino Acids.png

 

               o    Threonine(thr)*
               o    Cysteine (cys)
               o    Tyrosine (tyr)

               o    Asparagines (asn)
               o    Glutamine (gln)
               o    Glutamic Acid (glu)
               o    Aspartic Acid (asp)

              o    Lysine (lys)*
              o    Arginine (arg)

              o    Histidine (his)

Properties of Amino Acids

Peptide Bond - bond between the acid group of one amino acid and the amino group of another
Dipeptide - 2 amino acids joined by a

peptide bond

  • Coded for by DNA and created by the ribosomes
  • Proteins are long, flexible and able to form different links with themselves or other molecules
  • Have an amino(A)-terminus and a Carboxyl(C)-terminus

Protein Structure

  • A Protein's function depends on its shape which depends on its amino acids

 

  • Primary Structure
    • Long chain of amino acids linked by covalent peptide bonds à in specific order
  • Secondary Structure
    • Intermolecular forces (mostly H-bonds) cause the chain to coil into an α-helix or fold into a β-pleated sheet
  • Tertiary Structure
    • Chaperone proteins help a growing polypeptide fold into its tertiary structure
    • Supercoiling due to polarity, the shape of the amino acids (e.g. proline causes a kink), other components (e.g. iron) and disulfide bridges.
  • Quaternary Structure
    • Various polypeptides join together with intermolecular forces to form a protein

Denaturing of Proteins

  • Change in è Heat, pH, temperature, ionic concentration etc.
    • Can cause changes in the 3-D structure of the protein

                        Change can be permanent if the 1° structure is broken

                        Change can be reversed if only the 3° structure is broken

  • Use of denaturing proteins à Food preservation

 

 

 


Related Discussions:- Amino acids

Explain process of stress testing in women, Q. Explain process of Stress Te...

Q. Explain process of Stress Testing in Women? Estrogen has been implicated as a cause of ST depression. For years it seemed that estrogen protect women from coronary artery di

Define methods of food preservation, Define methods of Food Preservation? ...

Define methods of Food Preservation? Food preservation is one of the oldest technologies used by human beings. The perishable food materials like fruits, vegetables, milk, meat

Explain concept of normal diet, Normal or General Diet This diet is pl...

Normal or General Diet This diet is planned to be  consistent with the  Recommended Dietary Allowances (RDAs) of  nutrients  and  is based  on  the food groups.  It  is  usuall

Motor control in annelids and arthropods, Motor Control in Annelids and Art...

Motor Control in Annelids and Arthropods In annelids and arthropods generally, individual metameric ganglia of the ventral nerve cord are capable of initiating and keep locomo

Cranial nerves, The cranial nerves are composed of twelve pairs of nerves...

The cranial nerves are composed of twelve pairs of nerves which emanate from the nervous tissue of brain. In order to reach their targets they should ultimately exit/enter the cr

Explain genetic information that is transmitted hereditarily, Which is the ...

Which is the biological molecule that contains the genetic information that is transmitted hereditarily and controls the cellular functioning? The hereditary molecule that cont

Do protozoans have a cellular nucleus, Q. Do protozoans have a cellular nuc...

Q. Do protozoans have a cellular nucleus? All protozoans, as eukaryotes have nucleus, some species like the paramecium have two nuclei the micronucleus and the macronucleus.

Can you explain about cardiomyopathies, Q. Can you explain about Cardiomyop...

Q. Can you explain about Cardiomyopathies? Cardiomyopathy is a primary disorder of heart muscle that may cause cardiac dysfunction and is not related to any obvious disease pr

Systematics, three types of evidence used by systematic taxonomists

three types of evidence used by systematic taxonomists

Regeneration and its examples, R E GENER A TIO N - Natural ability...

R E GENER A TIO N - Natural ability of living being to replace worn out parts, to repair damaged parts, to regrow cost off organs & to reform entire body from a small piec

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd