公式:
length of insert (bp)/length of vector (bp) x ng of vector = ng of insert needed for 1:1 insert:vector ratio
(插入片段长度 (bp) X 载体重量(ng) ) / 载体长度 (bp) = 插入片段:载体比例为1:1时所需的插入片段重量(ng)
Contribution of acquired carbapenem-hydrolyzing oxacillinases to carbapenem resistance in Acinetobacter baumannii.
Authors:Héritier C, Poirel L, Lambert T, Nordmann P
Journal:Antimicrob Agents Chemother
PubMed ID:16048925
'Carbapenem-hydrolyzing oxacillinases are reported increasingly in Acinetobacter baumannii. Since they hydrolyze carbapenems at low levels, the roles of carbapenem-hydrolyzing oxacillinases OXA-23, OXA-40, and OXA-58 in A. baumannii were determined. The bla(OXA-23), bla(OXA-40), and bla(OXA-58) genes were inserted in broad-host-range plasmid pAT801 and transformed in Escherichia coli DH10B and in A. ... More
A gene network for long-day flowering activates RFT1 encoding a mobile flowering signal in rice.
Authors:Komiya R, Yokoi S, Shimamoto K
Journal:Development
PubMed ID:19762423
'Although some genes that encode sensory or regulatory elements for photoperiodic flowering are conserved between the long-day (LD) plant Arabidopsis thaliana and the short-day (SD) plant rice, the gene networks that control rice flowering, and particularly flowering under LD conditions, are not well understood. We show here that RICE FLOWERING ... More
Estrogen receptor-mediated regulation of microRNA inhibits proliferation of vascular smooth muscle cells.
Authors:Zhao J, Imbrie GA, Baur WE, Iyer LK, Aronovitz MJ, Kershaw TB, Haselmann GM, Lu Q, Karas RH
Journal:Arterioscler Thromb Vasc Biol
PubMed ID:23175673
Estradiol (E2) regulates gene transcription by activating estrogen receptor-a and estrogen receptor-ß. Many of the genes regulated by E2 via estrogen receptors are repressed, yet the molecular mechanisms that mediate E2-induced gene repression are currently unknown. We hypothesized that E2, acting through estrogen receptors, regulates expression of microRNAs (miRs) leading ... More
Transmission of human immunodeficiency virus type 1 from a patient who developed AIDS to an elite suppressor.
Authors:Bailey JR, O'Connell K, Yang HC, Han Y, Xu J, Jilek B, Williams TM, Ray SC, Siliciano RF, Blankson JN
Journal:J Virol
PubMed ID:18495769
Elite suppressors (ES) are untreated human immunodeficiency virus type 1 (HIV-1)-infected patients who maintain viral loads of <50 copies/ml. The mechanisms involved in this control of viral replication remain unclear. Prior studies suggested that these patients, as well as long-term nonprogressors, are infected with defective HIV-1 variants. Other reports have ... More