7 research outputs found

    Additional file 1: of Network analysis of an in vitro model of androgen-resistance in prostate cancer

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    Table S1.  Top 15 pathways for the human differentially expressed genes. Table S2. Top 15 pathways for the cell line deferentially expressed genes. Figure S1. Differencially expressed cell line genes overlaid on KEGG hsa04010 MAPK signaling pathway. Figure S2. Differentially expressed cell line genes overlaid on KEGG hsa04151 PI3K-Akt signaling pathway-Homo sapiens (human). Figure S3. Differentially expressed human tumour genes overlaid on KEGG hsa04010 MAPK signaling pathway. Figure S4. Differentially expressed human tumour genes overlaid on KEGG hsa04151 PI3K-Akt signaling pathway-Homo sapiens (human). (PDF 460 kb

    Dynamics of the T4 Bacteriophage DNA Packasome Motor: ENDONUCLEASE VII RESOLVASE RELEASE OF ARRESTED Y-DNA SUBSTRATES*

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    Conserved bacteriophage ATP-based DNA translocation motors consist of a multimeric packaging terminase docked onto a unique procapsid vertex containing a portal ring. DNA is translocated into the empty procapsid through the portal ring channel to high density. In vivo the T4 phage packaging motor deals with Y- or X-structures in the replicative concatemer substrate by employing a portal-bound Holliday junction resolvase that trims and releases these DNA roadblocks to packaging. Here using dye-labeled packaging anchored 3.7-kb Y-DNAs or linear DNAs, we demonstrate FRET between the dye-labeled substrates and GFP portal-containing procapsids and between GFP portal and single dye-labeled terminases. We show using FRET-fluorescence correlation spectroscopy that purified T4 gp49 endonuclease VII resolvase can release DNA compression in vitro in prohead portal packaging motor anchored and arrested Y-DNA substrates. In addition, using active terminases labeled at the N- and C-terminal ends with a single dye molecule, we show by FRET distance of the N-terminal GFP-labeled portal protein containing prohead at 6.9 nm from the N terminus and at 5.7 nm from the C terminus of the terminase. Packaging with a C-terminal fluorescent terminase on a GFP portal prohead, FRET shows a reduction in distance to the GFP portal of 0.6 nm in the arrested Y-DNA as compared with linear DNA; the reduction is reversed by resolvase treatment. Conformational changes in both the motor proteins and the DNA substrate itself that are associated with the power stroke of the motor are consistent with a proposed linear motor employing a terminal-to-portal DNA grip-and-release mechanism
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