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

Types of neurons, TYPE S OF NEURONS - The neurons are classified on th...

TYPE S OF NEURONS - The neurons are classified on the basis of their structure and function. (A) On the basis of the structure, the neurons are of four types.

What is the significance of magnesium for plants, Q. What is the significan...

Q. What is the significance of magnesium for plants? What are the other major biological functions of magnesium? Magnesium is basically vital for plants because it is part of t

Determine the members of kingdom plantae, Normal 0 false fals...

Normal 0 false false false EN-IN X-NONE X-NONE

Vegetative development - morphogenesis, Vegetative Development - Morphogene...

Vegetative Development - Morphogenesis This term is coined for the process leading to and determining the form and structure of organs. It is used mainly by experimental morph

What is the life cycle of trypanosoma cruzi, Q. What is the life cycle of T...

Q. What is the life cycle of Trypanosoma cruzi? The Trypanosoma cruzi is a heteroxenous parasite that is it has an intermediate host, the triatomine bug, and a definitive host,

What is prevailing wind direction, What is the prevailing wind direction in...

What is the prevailing wind direction in equatorial regions affected by the trade winds? a) The wind blows from east to west b) the wind blows from west to east.

Define risk management, Define Risk management Risk management is def...

Define Risk management Risk management is defined  for the purposes of the Codex Alimentations Commission as  "the process, distinct from  risk assessment,  of weighing polic

Define the term functional foods, Define the term Functional Foods? The...

Define the term Functional Foods? The term 'functional food' was born in Japan. Functional foods are actually products formulated with naturally occurring chemicals or a combin

How does aldosterone act and where is it produced, How does aldosterone act...

How does aldosterone act and where is it produced? Aldosterone is a hormone that acts upon the nephron tubules stimulating the resorption of sodium. Thus it contributes to the

Complications of diabetes, Q. Complications of Diabetes? Diabetes, as y...

Q. Complications of Diabetes? Diabetes, as you know, is a lifelong disease. We have said earlier also that it can be controlled but not cured. Control of diabetes by ensuring n

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