Non-polar amino acid: Difference between revisions

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Non-polar [[amino acid|amino acids]] are those which have no charge. Examples of non-polar [[amino acid|amino acids]] are as follows: [[Alanine|Alanine]] (A), [[Glycine|Glycine]] (G), [[Valine|Valine]]&nbsp;(V), [[Leucine|Leucine]]&nbsp;(L), [[Isoleucine|Isoleucine]]&nbsp;(I), [[Proline|Proline]]&nbsp;(P), [[Phenylalanine|Phenylalanine]]&nbsp;(F), [[Methionine|Methionine]]&nbsp;(M), [[Tryptophan|Tryptophan]]&nbsp;(W) and finally [[Cysteine|Cysteine]]&nbsp;(C) <ref>Alberts B, Molecular Biology of the Cell, 5th Edition pg 127</ref>.
Non-polar [[Amino acid|amino acids]] are those which have no overall charge. Of the twenty amno acids there are five charged and fifteen uncharged, these are:


=== References ===
(A) [[Alanine|Alanine]]
 
(C) [[Cysteine|Cystein]]
 
(F) [[Phenylalanine|Phenylalanine]]
 
(G [[Glycine|Glycine]]
 
(I) [[Isoleucine|Isoleucine]]
 
(L) [[Leucine|Leucine]]
 
(M) [[Methionine|Methionine]]
 
(N) [[Asparagine|Asparagine]]
 
(P) [[Proline|Proline]]
 
(Q) [[Glutamine|Glutamine]]
 
(S) [[Serine|Serine]]
 
(T) [[Threonine|Threonine]]
 
(V) [[Valine|Valine]]
 
(W) [[Tryptophan|Tryptophan]]
 
(Y) [[Tyrosine|Tyrosine]]
 
----
 
The overall charge of an amino acid is determined by the R group attached to the&nbsp;alpha carbon atom.&nbsp;Those with a carboxyl&nbsp;R group&nbsp;will have an overall&nbsp;negative charge, whereas those with a amide&nbsp;group&nbsp;have an&nbsp;positive charge. &nbsp;<ref>Alberts B, Molecular Biology of the Cell, 5th Edition pg 127</ref>.
 
=== References ===


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Revision as of 15:43, 29 November 2012

Non-polar amino acids are those which have no overall charge. Of the twenty amno acids there are five charged and fifteen uncharged, these are:

(A) Alanine

(C) Cystein

(F) Phenylalanine

(G Glycine

(I) Isoleucine

(L) Leucine

(M) Methionine

(N) Asparagine

(P) Proline

(Q) Glutamine

(S) Serine

(T) Threonine

(V) Valine

(W) Tryptophan

(Y) Tyrosine


The overall charge of an amino acid is determined by the R group attached to the alpha carbon atom. Those with a carboxyl R group will have an overall negative charge, whereas those with a amide group have an positive charge.  [1].

References

  1. Alberts B, Molecular Biology of the Cell, 5th Edition pg 127

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