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11.
  • Ding, HT, et al. (författare)
  • Parallel cloning, expression, purification and crystallization of human proteins for structural genomics
  • 2002
  • Ingår i: Acta Crystallographica. Section D: Biological Crystallography. - 1399-0047. ; 58, s. 2102-2108
  • Tidskriftsartikel (refereegranskat)abstract
    • 54 human genes were selected as test targets for parallel cloning, expression, purification and crystallization. Proteins from these genes were selected to have a molecular weight of between 14 and 50 kDa, not to have a high percentage of hydrophobic residues (i.e. more likely to be soluble) and to have no known crystal structures and were not known to be subunits of heterocomplexes. Four proteins containing transmembrane regions were selected for comparative tests. To date, 44 expression clones have been constructed with the Gateway(TM) cloning system (Invitrogen, The Netherlands). Of these, 35 clones were expressed as recombinant proteins in Escherichia coli strain BL21 (DE3)-pLysS, of which 12 were soluble and four have been purified to homogeneity. Crystallization conditions were screened for the purified proteins in 96-well plates under oil. After further refinement with the same device or by the hanging-drop method, crystals were grown, with needle, plate and prism shapes. A 2.12 Angstrom data set was collected for protein NCC27. The results provide insights into the high-throughput target selection, cloning, expression and crystallization of human genomic proteins.
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12.
  • Gu, Y, et al. (författare)
  • Strong association between nutritional markers and arterial stiffness in continuous ambulatory peritoneal dialysis patients
  • 2008
  • Ingår i: Blood purification. - : S. Karger AG. - 1421-9735 .- 0253-5068. ; 26:4, s. 340-346
  • Tidskriftsartikel (refereegranskat)abstract
    • <i>Background:</i> Malnutrition is a predictor of cardiovascular disease in dialysis patients, but the mechanisms remain unknown. We investigated links between nutritional markers and arterial stiffness in continuous ambulatory peritoneal dialysis patients. <i>Methods:</i> We evaluated the relationship between arterial stiffness evaluated by pulse-wave velocity (PWV) and four estimates of nutritional status (serum albumin, handgrip strength [HGS], subjective global assessment [SGA], and bioelectrical impedance analysis phase angle [PA]) in 124 PD patients. <i>Results:</i> Malnourished patients exhibited a significantly higher PWV than those classified as well-nourished by SGA (p < 0.05). Furthermore, PWV correlated negatively with albumin, HGS and PA (p < 0.001, respectively). PWV was also correlated with age, systolic blood pressure, and C-reactive protein. In multivariate regression analysis, albumin, HGS, SGA and PA were each independently associated with PWV after adjustment. <i>Conclusions:</i> The significant association between each nutritional marker and PWV in PD patients was independent of inflammation and diabetic state, suggesting that malnutrition may contribute to vascular dysfunction.
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