Structures and relative stability of four families of low-lying silicon clusters in the size range of Sin(n=21-30) are studied, wherein two families of the clusters show prolate structures while the third one shows near-spherical structures. The prolate clusters in the first family can be assembled by connecting two small-sized magic clusters Sin (n=6, 7, 9, or 10) via a fused-puckered-hexagona...

NMR analysis of GI-20 in three micelles revealed that arginine side-chain H resonances are well resolved in dioctanoylphosphatidylglycerol (D8PG), allowing observations of peptide-lipid interactions. Structural differences in SDS and D8PG underscore caution with the use of SDS. Peptide chemical shifts are proposed to be a useful indicator of mi-

A Fibrose Cística é uma doença genética autossômica recessiva caracterizada por mutações no gene CFTR (Cystic Fibrosis Transmembrane Condutance Regulator), responsável pelo transporte de cloro através da membrana celular. Ela causa alterações nas secreções vários órgãos tornando-as grossas e espessas, além causar diversas metabólicas organismo do ser humano. No estado Mato Grosso Sul residem se...