About: Structural Basis for Inhibition of Mycobacterial and Human Adenosine Kinase by 7-Substituted 7-(Het)aryl-7-deazaadenine Ribonucleosides     Goto   Sponge   NotDistinct   Permalink

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  • Adenosine kinase (ADK) from Mycobacterium tuberculosis (Mtb) was selected as a target for design of antimycobacterial nucleosides. Screening of 7-(het)aryl-7-deazaadenine ribonucleosides with Mtb and human (h) ADKs and testing with wild-type and drug-resistant Mtb strains identified specific inhibitors of Mtb ADK with micromolar antimycobacterial activity and low cytotoxicity. X-ray structures of complexes of Mtb and hADKs with 7-ethynyl-7-deazaadenosine showed differences in inhibitor interactions in the adenosine binding sites. 1D H-1 STD NMR experiments revealed that these inhibitors are readily accommodated into the ATP and adenosine binding sites of Mtb ADK, whereas they bind preferentially into the adenosine site of hADK. Occupation of the Mtb ADK ATP site with inhibitors and formation of catalytically less competent semiopen conformation of MtbADK after inhibitor binding in the adenosine site explain the lack of phosphorylation of 7-substituted-7-deazaadenosines. Semiempirical quantum mechanical analysis confirmed different affinity of nucleosides for the Mtb ADK adenosine and ATP sites.
  • Adenosine kinase (ADK) from Mycobacterium tuberculosis (Mtb) was selected as a target for design of antimycobacterial nucleosides. Screening of 7-(het)aryl-7-deazaadenine ribonucleosides with Mtb and human (h) ADKs and testing with wild-type and drug-resistant Mtb strains identified specific inhibitors of Mtb ADK with micromolar antimycobacterial activity and low cytotoxicity. X-ray structures of complexes of Mtb and hADKs with 7-ethynyl-7-deazaadenosine showed differences in inhibitor interactions in the adenosine binding sites. 1D H-1 STD NMR experiments revealed that these inhibitors are readily accommodated into the ATP and adenosine binding sites of Mtb ADK, whereas they bind preferentially into the adenosine site of hADK. Occupation of the Mtb ADK ATP site with inhibitors and formation of catalytically less competent semiopen conformation of MtbADK after inhibitor binding in the adenosine site explain the lack of phosphorylation of 7-substituted-7-deazaadenosines. Semiempirical quantum mechanical analysis confirmed different affinity of nucleosides for the Mtb ADK adenosine and ATP sites. (en)
Title
  • Structural Basis for Inhibition of Mycobacterial and Human Adenosine Kinase by 7-Substituted 7-(Het)aryl-7-deazaadenine Ribonucleosides
  • Structural Basis for Inhibition of Mycobacterial and Human Adenosine Kinase by 7-Substituted 7-(Het)aryl-7-deazaadenine Ribonucleosides (en)
skos:prefLabel
  • Structural Basis for Inhibition of Mycobacterial and Human Adenosine Kinase by 7-Substituted 7-(Het)aryl-7-deazaadenine Ribonucleosides
  • Structural Basis for Inhibition of Mycobacterial and Human Adenosine Kinase by 7-Substituted 7-(Het)aryl-7-deazaadenine Ribonucleosides (en)
skos:notation
  • RIV/61388963:_____/14:00436116!RIV15-GA0-61388963
http://linked.open...avai/riv/aktivita
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  • I, P(GAP207/11/0344), P(LK11205), P(LO1302)
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  • 20
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  • 47839
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  • RIV/61388963:_____/14:00436116
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  • 7-(het)aryl-7-deazaadenine ribonucleosides; enzyme inhibition; adenosine kinase; cytostatic activity (en)
http://linked.open.../riv/klicoveSlovo
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  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [B9C561BC8624]
http://linked.open...i/riv/nazevZdroje
  • Journal of Medicinal Chemistry
http://linked.open...in/vavai/riv/obor
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  • 57
http://linked.open...iv/tvurceVysledku
  • Brynda, Jiří
  • Dušek, Michal
  • Dostál, Jiří
  • Dvořáková, H.
  • Hocek, Michal
  • Konečný, P.
  • Pichová, Iva
  • Pohl, Radek
  • Votruba, Ivan
  • Zábranská, Helena
  • Řezáčová, Pavlína
  • Hnízda, Aleš
  • Fanfrlík, Jindřich
  • Bourderioux, Aurelie
  • Džubák, P.
  • Hajdúch, M.
  • Nauš, Petr
  • Snášel, Jan
  • Veverka, Václav
  • Stolaříková, J.
http://linked.open...ain/vavai/riv/wos
  • 000343740700006
issn
  • 0022-2623
number of pages
http://bibframe.org/vocab/doi
  • 10.1021/jm500497v
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