L-form: Difference between revisions
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L-form (Laevorotatory form) is referred to the left handed configuration of [[Amino acids|amino acids<ref>http://www.phschool.com/science/biology_place/biocoach/bioprop/landd.html</ref> | L-form (Laevorotatory form) is referred to the left handed configuration of [[Amino acids|amino acids]]<ref>http://www.phschool.com/science/biology_place/biocoach/bioprop/landd.html</ref> and it is the stereoisomer which makes plane [[Polarised light|polarised light]] rotates to the left<ref>http://www.cryst.bbk.ac.uk/education/AminoAcid/stereochem.html</ref>. Almost all amino acids form two type of [[Enantiomers|enantiomers]] except [[Glycine|glycine]] because it has two [[Hydrogen|hydrogen]] [[Atoms|atoms]] attached to the central [[Carbon|carbon]] atom<ref>http://www.phschool.com/science/biology_place/biocoach/bioprop/landd.html</ref>. The two different stereoisomers are the D-form and the L-form<ref>http://www.phschool.com/science/biology_place/biocoach/bioprop/landd.html</ref>. The latter is the common form of amino acids and manufactured in the cells and L-amino acids are translated into proteins<ref>http://www.phschool.com/science/biology_place/biocoach/bioprop/landd.html</ref>. D-amino acids can be found in bacterial cell walls, but not in the cell<ref>http://www.phschool.com/science/biology_place/biocoach/bioprop/landd.html</ref> because it causes death<ref>Biochemistry Lecture 2 by Professor Jeremy Lakey</ref>. It is said that the L-form and D-form are referred to life and death (L=living, D=dead)<ref>Biochemistry Lecture 2 by Professor Jeremy Lakey</ref>. <br> | ||
=== References === | |||
= References | |||
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Latest revision as of 09:08, 6 December 2017
L-form (Laevorotatory form) is referred to the left handed configuration of amino acids[1] and it is the stereoisomer which makes plane polarised light rotates to the left[2]. Almost all amino acids form two type of enantiomers except glycine because it has two hydrogen atoms attached to the central carbon atom[3]. The two different stereoisomers are the D-form and the L-form[4]. The latter is the common form of amino acids and manufactured in the cells and L-amino acids are translated into proteins[5]. D-amino acids can be found in bacterial cell walls, but not in the cell[6] because it causes death[7]. It is said that the L-form and D-form are referred to life and death (L=living, D=dead)[8].
References
- ↑ http://www.phschool.com/science/biology_place/biocoach/bioprop/landd.html
- ↑ http://www.cryst.bbk.ac.uk/education/AminoAcid/stereochem.html
- ↑ http://www.phschool.com/science/biology_place/biocoach/bioprop/landd.html
- ↑ http://www.phschool.com/science/biology_place/biocoach/bioprop/landd.html
- ↑ http://www.phschool.com/science/biology_place/biocoach/bioprop/landd.html
- ↑ http://www.phschool.com/science/biology_place/biocoach/bioprop/landd.html
- ↑ Biochemistry Lecture 2 by Professor Jeremy Lakey
- ↑ Biochemistry Lecture 2 by Professor Jeremy Lakey