The first total synthesis of the peptaibol hypomurocin A1 and its conformation analysis: an application of the 'azirine/oxazolone method'.
Identifieur interne : 002F01 ( Main/Merge ); précédent : 002F00; suivant : 002F02The first total synthesis of the peptaibol hypomurocin A1 and its conformation analysis: an application of the 'azirine/oxazolone method'.
Auteurs : Nicolas Pradeille ; Oliver Zerbe ; Kerstin Möhle ; Anthony Linden ; Heinz HeimgartnerSource :
- Chemistry & biodiversity [ 1612-1880 ] ; 2005.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemical synthesis : Fungal Proteins, Oligopeptides.
- chemical , chemistry : Fungal Proteins, Oligopeptides, Peptides.
- Amino Acid Sequence, Models, Molecular, Molecular Sequence Data, Peptaibols, Protein Conformation.
Abstract
The first total synthesis of Hypomurocin A1 (HM A1) in solution phase is described. As members of the peptaibol family, hypomurocins are constituted by two groups of peptides: six undecapeptides (undecamers) in the HM A group and six octadecapeptides (18-mers) in the HM B group. The synthesis presented has been successfully achieved by the 'azirine/oxazolone method' to introduce the two Aib-Pro sequences included in this undecapeptaibol in one step with methyl 2,2-dimethyl-2H-azirine-3-prolinate as the building block. The coupling reactions of the Z-protected amino acids or peptide acids involved the use of N,N,N',N'-tetramethyluronium tetrafluoroborate (TBTU) and 1-hydroxybenzotriazole (HOBt), and led to the peptides in good-to-very-good yields. The peptides were purified by reverse-phase HPLC and characterized by NMR spectroscopy (1H, 13C, COSY, TOCSY, HSQC, HMBC, ROESY), ESI-MS, IR, elemental analysis, optical rotation, and X-ray crystallography. An NMR analysis of HM A1 was also carried out in deuterated micelles to perform a structural comparison of the helix in solution and in membranes.
DOI: 10.1002/cbdv.200590084
PubMed: 17193196
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Linden</name></author><author><name sortKey="Heimgartner, Heinz" sort="Heimgartner, Heinz" uniqKey="Heimgartner H" first="Heinz" last="Heimgartner">Heinz Heimgartner</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2005">2005</date><idno type="RBID">pubmed:17193196</idno><idno type="pmid">17193196</idno><idno type="doi">10.1002/cbdv.200590084</idno><idno type="wicri:Area/PubMed/Corpus">002207</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">002207</idno><idno type="wicri:Area/PubMed/Curation">002207</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">002207</idno><idno type="wicri:Area/PubMed/Checkpoint">002169</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">002169</idno><idno type="wicri:Area/Ncbi/Merge">000494</idno><idno type="wicri:Area/Ncbi/Curation">000494</idno><idno type="wicri:Area/Ncbi/Checkpoint">000494</idno><idno 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first="Anthony" last="Linden">Anthony Linden</name></author><author><name sortKey="Heimgartner, Heinz" sort="Heimgartner, Heinz" uniqKey="Heimgartner H" first="Heinz" last="Heimgartner">Heinz Heimgartner</name></author></analytic><series><title level="j">Chemistry & biodiversity</title><idno type="eISSN">1612-1880</idno><imprint><date when="2005" type="published">2005</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amino Acid Sequence</term><term>Fungal Proteins (chemical synthesis)</term><term>Fungal Proteins (chemistry)</term><term>Models, Molecular</term><term>Molecular Sequence Data</term><term>Oligopeptides (chemical synthesis)</term><term>Oligopeptides (chemistry)</term><term>Peptaibols</term><term>Peptides (chemistry)</term><term>Protein Conformation</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Conformation des protéines</term><term>Données de séquences moléculaires</term><term>Modèles moléculaires</term><term>Oligopeptides ()</term><term>Oligopeptides (synthèse chimique)</term><term>Peptaïbols</term><term>Peptides ()</term><term>Protéines fongiques ()</term><term>Protéines fongiques (synthèse chimique)</term><term>Séquence d'acides aminés</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemical synthesis" xml:lang="en"><term>Fungal Proteins</term><term>Oligopeptides</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Fungal Proteins</term><term>Oligopeptides</term><term>Peptides</term></keywords><keywords scheme="MESH" qualifier="synthèse chimique" xml:lang="fr"><term>Oligopeptides</term><term>Protéines fongiques</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Amino Acid Sequence</term><term>Models, Molecular</term><term>Molecular Sequence Data</term><term>Peptaibols</term><term>Protein Conformation</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Conformation des protéines</term><term>Données de séquences moléculaires</term><term>Modèles moléculaires</term><term>Oligopeptides</term><term>Peptaïbols</term><term>Peptides</term><term>Protéines fongiques</term><term>Séquence d'acides aminés</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The first total synthesis of Hypomurocin A1 (HM A1) in solution phase is described. As members of the peptaibol family, hypomurocins are constituted by two groups of peptides: six undecapeptides (undecamers) in the HM A group and six octadecapeptides (18-mers) in the HM B group. The synthesis presented has been successfully achieved by the 'azirine/oxazolone method' to introduce the two Aib-Pro sequences included in this undecapeptaibol in one step with methyl 2,2-dimethyl-2H-azirine-3-prolinate as the building block. The coupling reactions of the Z-protected amino acids or peptide acids involved the use of N,N,N',N'-tetramethyluronium tetrafluoroborate (TBTU) and 1-hydroxybenzotriazole (HOBt), and led to the peptides in good-to-very-good yields. The peptides were purified by reverse-phase HPLC and characterized by NMR spectroscopy (1H, 13C, COSY, TOCSY, HSQC, HMBC, ROESY), ESI-MS, IR, elemental analysis, optical rotation, and X-ray crystallography. An NMR analysis of HM A1 was also carried out in deuterated micelles to perform a structural comparison of the helix in solution and in membranes.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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