We thank Fermentek for the information,
the free Nonactin granted for our project,
and most of all, the moral support |
Link friends <![CDATA[<ol><li><p align="left"><a href="http://17dmag.imess.net">17dmag </a></li><li><p align="left"><a href="http://7aad.yoll.net">7aad </a></li><li><p align="left"><a href="http://actinomycin.imess.net">actinomycin </a></li><li><p align="left"><a href="http://aflatoxin-b1.yoll.net">alfatoxin-b1 </a></li><li><p align="left"><a href="http://aflatoxin-b2.yoll.net">aflatoxin-b2 </a></li><li><p align="left"><a href="http://aflatoxin-g1.sinfree.net">aflatoxin-g1 </a></li><li><p align="left"><a href="http://aflatoxin-g2.hotusa.org">aflatoxin-g2 </a></li><li><p align="left"><a href="http://aflatoxin-m1.yoll.net">aflatoxin-m1 </a></li><li><p align="left"><a href="http://aflatoxin-m2.yoll.net">aflatoxin-m2</a></li><li><p align="left"><a href="http://anisomycin.sinfree.net">anisomycin </a></li><li><p align="left"><a href="http://ascomycin.my-age.net">ascomycin </a></li><li><p align="left"><a href="http://Blyukher.imess.net">Blukher</a></li><li><p align="left"><a href="http://Bukharin.imess.net">Bukharin</a></li><li><p align="left"><a href="http://dybenko.maclenet.com">dybenko</a></li><li><p align="left"><a href="http://frinovsky.imess.net">frinovsky </a></li><li><p align="left"><a href="http://geldanamycin.fateback.com">geldanamycin </a></li><li><p align="left"><a href="http://k252a.enacre.net">k252a </a></li><li><p align="left"><a href="http://k252b.bebto.com">k252b </a></li><li><p align="left"><a href="http://kt5720.deep-ice.com">kt5720 </a></li><li><p align="left"><a href="http://kt5823.undonet.com">kt5823</a></li><li><p align="left"><a href="http://leptomycin.bebto.com">leptomycin </a></li><li><p align="left"><a href="http://Link-Exchange.yoll.net">Link-Exchange</a></li><li><p align="left"><a href="http://mithramycin.noneto.com">mithramycin </a></li><li><p align="left"><a href="http://mitomycin.enacre.net">mitomycin </a></li><li><p align="left"><a href="http:// nonactin.yoll.net">nonactin</a></li><li><p align="left"><a href="http://Ochratoxin.fateback.com">Ochratoxin</a></li><li><p align="left"><a href="http://parthenolide.my-age.net">parthenolide </a></li><li><p align="left"><a href="http://snorring.deep-ice.com">Snorring</a></li><li><p align="left"><a href="http://staurosporine.hotusa.org">staurosporine </a></li><li><p align="left"><a href="http://tinnitus.hotusa.org">tinnitus </a></li><li><p align="left"><a href="http://trichostatin.sinfree.net">trichostatin </a></li><li><p align="left"><a href="http://tukhachevsky.fateback.com">tukhachevsky </a></li><li><p align="left"><a href="http://verruculogen.maclenet.com">verruculogen </a></li><li><p align="left"><a href="http://vomitoxin.fateback.com">vomitoxin </a></li><li><p align="left"><a href="http://wortmannin.yoll.net">wortmannin </a></li><li><p align="left"><a href="http://yakir.sinfree.net">yakir </a></li><li><p align="left"><a href="http://yegorov.sinfree.net">yegorov </a></li><li><p align="left"><a href="http://yezhov.sinfree.net">yezhov </a></li><li><p align="left"><a href="http://zearalenone.imess.net">zearalenone </a></li></ol><p align="left"><hr color="#008000" size="5" align="left"><p align="left">Here come some links to top-rated hrefs, such as Microsoft, wikipedia, Google and Yahoo :<a href="http://www.google.co.il/">google</a>, <a href="http://www.microsoft.com/en/us/default.aspx">microsoft</a>, <a href="http://www.yahoo.com/">yahoo</a>, <a href="http://en.wikipedia.org/wiki/Main_Page">wikipedia</a></p><hr color="#008000" size="5" align="left"><p align="left">Now come links to these of fermentek product pages, that are needy : .<a href="http://www.fermentek.co.il">the homepage of fermentek</a>, <a href="http://www.fermentek.co.il/FK506.htm">FK506 or tacrolimus</a>, <a href="http://www.fermentek.co.il/05-products.htm">products of Fermentek: staurosporine, K252A, aflatoxin</a>, <font face="Verdana" size="2"><a href="http://www.fermentek.co.il/rapamycin.htm">Sirolimus (Rapamycin)</a></font></p><p align="left">And other link beggars:</p><p align="left"><a href="http://Tinnitus.itgo.com">Tinnitus. about some guys that had tinnitus ]]> | 12: Inorg Chem. 1996 Apr 10;35(8):2352-2359.
Second-Sphere Coordination of Ferrioxamine B and Association of Deferriferrioxamine B, CH(3)(CH(2))(4)NH(3)(+), NH(4)(+), K(+), and Mg(2+) with Synthetic Crown Ethers and the Natural Ionophores Valinomycin and Nonactin in Chloroform.
Batinic-Haberle I, Spasojevic I, Crumbliss AL.
Department of Chemistry, Duke University, Box 90346, Durham, North Carolina 27708-0346.
The interaction of ferrioxamine B, FeHDFB(+), through a protonated amine side chain, with various host ionophore structures to form a host-guest complex in the second coordination shell has been investigated. Host-guest association constants (K(a)) in water saturated chloroform are reported for synthetic crown ethers with different cavity size and substituents (18-crown-6 and its dicyclohexano, benzo, and dibenzo derivatives; dibenzo and dicyclohexano derivatives of 24-crown-8; and dibenzo-30-crown-10). The natural ionophores valinomycin and nonactin were also found to form stable second-sphere complexes with ferrioxamine B in wet chloroform. Results are reported for both picrate and perchlorate salts of FeHDFB(+). Since the protonated amine side chain of ferrioxamine B may be viewed as a substituted amine, the host-guest association constants for FeHDFB(+) are compared to the interaction of Mg(2+), K(+), NH(4)(+), CH(3)(CH(2))(4)NH(3)(+), and H(4)DFB(+) with the same ionophores. This is the first report of nonactin complexation of this series of cations in an organic medium of low polarity and one of the few reports of valinomycin complexation. To the best of our knowledge these are the first reported stability constants for the association of (Mg(2+),2pic(-)) with natural and synthetic ionophores in chloroform. K(a) values for ferrioxamine B complexation by the synthetic crown ethers are influenced by ring size and substituent. Despite significant preorganization capabilities, the large cavities of valinomycin, nonactin and benzo-30-crown-10 do not form as stable host-guest assemblies with bulky substituted amine cations such as ferrioxamine B as does cis-dicyclohexano-18-crown-6.
PMID: 11666435 |
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