Sandbox Reserved 429: Difference between revisions

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The final stages of the synthesis of peptidoglycan requires penicillin binding proteins. All bacterial cell walls are made of peptidoglycan and it is important to note that all bacteria have reactions that covalently link the first peptidoglycan between two polysaccharides. This reaction is catalyzed by transpeptidase enzymes which is inhibited by the beta-lactam. Penicillin binding protein binds to beta-lactam antibiotics because they are similar in chemical structure to the modular pieces that form the peptidoglycan. The <scene name='48/483886/betalactem/2'>beta-lactam</scene> amide bond is ruptured to form a covalent bond with the catalytic serine at the binding protein's active site. When the PBP form a stable covalent complex with the beta-lactam antibiotics, the cell dies due to PBP inactivation. The beta-lactam area in most drugs resemble the D-Ala-D-Ala end of peptides to which the transpeptidase enzyme binds. At the DA-DA, there is a serine 62 which is used to bind peptide strands to other stands and this is also where penicillin binds and inhibits the protein. Almost every bacterium has PBP genes but most enzymes are inhibited by the beta-lactams. The enzymes become inactive due to the drugs binding tightly to the active site and blocking the reaction.

The final stages of the synthesis of peptidoglycan requires penicillin binding proteins. All bacterial cell walls are made of peptidoglycan and it is important to note that all bacteria have reactions that covalently link the first peptidoglycan between two polysaccharides. This reaction is catalyzed by transpeptidase enzymes which is inhibited by the beta-lactam. Penicillin binding protein binds to beta-lactam antibiotics because they are similar in chemical structure to the modular pieces that form the peptidoglycan. The <scene name='48/483886/betalactem/2'>beta-lactam</scene> amide bond is ruptured to form a covalent bond with the catalytic serine at the binding protein's active site. When the PBP form a stable covalent complex with the beta-lactam antibiotics, the cell dies due to PBP inactivation. The beta-lactam area in most drugs resemble the D-Ala-D-Ala end of peptides to which the transpeptidase enzyme binds. At the DA-DA, there is a serine 62 which is used to bind peptide strands to other stands and this is also where penicillin binds and inhibits the protein. When the transpeptidase reaction takes place, the enzymes bind to the DA-DA end of the chain which results in one of the DA residues to be released and the enzyme attaches to the end of the peptide. Next, the closest peptidoglycan is covalently linked to the first peptidoglycan which forms a crosslink between the two polysaccharides. Almost every bacterium has PBP genes but most enzymes are inhibited by the beta-lactams. The enzymes become inactive due to the drugs binding tightly to the active site and blocking the reaction.

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Sandbox Reserved 429: Difference between revisions

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Revision as of 02:45, 11 April 2016 view source Student (talk \| contribs) students 33,923 edits No edit summary ← Older edit		Revision as of 03:20, 11 April 2016 view source Student (talk \| contribs) students 33,923 edits No edit summary Newer edit →
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	The final stages of the synthesis of peptidoglycan requires penicillin binding proteins. All bacterial cell walls are made of peptidoglycan and it is important to note that all bacteria have reactions that covalently link the first peptidoglycan between two polysaccharides. This reaction is catalyzed by transpeptidase enzymes which is inhibited by the beta-lactam. Penicillin binding protein binds to beta-lactam antibiotics because they are similar in chemical structure to the modular pieces that form the peptidoglycan. The <scene name='48/483886/betalactem/2'>beta-lactam</scene> amide bond is ruptured to form a covalent bond with the catalytic serine at the binding protein's active site. When the PBP form a stable covalent complex with the beta-lactam antibiotics, the cell dies due to PBP inactivation. The beta-lactam area in most drugs resemble the D-Ala-D-Ala end of peptides to which the transpeptidase enzyme binds. At the DA-DA, there is a serine 62 which is used to bind peptide strands to other stands and this is also where penicillin binds and inhibits the protein. Almost every bacterium has PBP genes but most enzymes are inhibited by the beta-lactams. The enzymes become inactive due to the drugs binding tightly to the active site and blocking the reaction.		The final stages of the synthesis of peptidoglycan requires penicillin binding proteins. All bacterial cell walls are made of peptidoglycan and it is important to note that all bacteria have reactions that covalently link the first peptidoglycan between two polysaccharides. This reaction is catalyzed by transpeptidase enzymes which is inhibited by the beta-lactam. Penicillin binding protein binds to beta-lactam antibiotics because they are similar in chemical structure to the modular pieces that form the peptidoglycan. The <scene name='48/483886/betalactem/2'>beta-lactam</scene> amide bond is ruptured to form a covalent bond with the catalytic serine at the binding protein's active site. When the PBP form a stable covalent complex with the beta-lactam antibiotics, the cell dies due to PBP inactivation. The beta-lactam area in most drugs resemble the D-Ala-D-Ala end of peptides to which the transpeptidase enzyme binds. At the DA-DA, there is a serine 62 which is used to bind peptide strands to other stands and this is also where penicillin binds and inhibits the protein. When the transpeptidase reaction takes place, the enzymes bind to the DA-DA end of the chain which results in one of the DA residues to be released and the enzyme attaches to the end of the peptide. Next, the closest peptidoglycan is covalently linked to the first peptidoglycan which forms a crosslink between the two polysaccharides. Almost every bacterium has PBP genes but most enzymes are inhibited by the beta-lactams. The enzymes become inactive due to the drugs binding tightly to the active site and blocking the reaction.

	==Additional Features==		==Additional Features==