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 restaurant deep fat frying evaluation, Restaurant deep fat frying e...

Restaurant deep fat frying evaluation A number of factors are studied when evaluating frying oils. During deep fat frying, the fat is exposed continuously to elevated temperat

What are classes into which the phylum arthropoda is divide, Q. What are th...

Q. What are the classes into which the phylum Arthropoda is divided? What are the three major ones and some of their representative species? The three main classes of arthropod

#titlecylintreta.., Aiscommoncellismwhatsk question #Minimum 100 words acce...

Aiscommoncellismwhatsk question #Minimum 100 words accepted#

Molecular bio, he recombinant plasmid extracted from the surviving colonies...

he recombinant plasmid extracted from the surviving colonies contains a gene called SUC2 that codes for convertase, an enzyme needed to metabolize sucrose. Mutations in the SNF gen

Excretory organs, why the excretory organ of prawn is called ''green gland'...

why the excretory organ of prawn is called ''green gland''?

Extraembryonic membranes the same in all vertebrates, Are the extraembryoni...

Are the extraembryonic membranes the same in all vertebrates? The presence of each extraembryonic membrane varies according to the vertebrate class. In fishes and amphibians

Explain about the adie''s pupil disease, Adie's  (Tonic) Pupil In Adie'...

Adie's  (Tonic) Pupil In Adie's syndrome there is no evident cause for the denervation. Most patients are women, aged 20-40 and have poor light reaction in one eye. When examin

What is the life duration of the red blood cells, Q. On average what is the...

Q. On average what is the life duration of the red blood cells? Where are they destroyed? What is the destination of the heme groups after the destruction of hemoglobin molecules?

Natality rate - natality, Natality Rate - Natality Natality rate or bi...

Natality Rate - Natality Natality rate or birth rate is determined by dividing the number of individuals born by unit time and is expressed as follows: Natality rate =  ΔNn

What is the life cycle of the schistosome, What is the life cycle of the sc...

What is the life cycle of the schistosome? Male and female adult schistosomes live in blood vessels of the human intestines. The females release eggs that trespass the vessel w

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