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Plotting a graph with the absorbance value as the dependent variable (Y-axis) and concentration as the independent variable (X-axis), results in an equation formatted as follows: y = ax 2 + bx + c, where solving for x determines the protein concentration of the sample. By switching the axes and plotting protein concentration as
17 Ιουλ 2009 · A square 2D-grid perpendicular to the current pore axis (x-axis) is then built and used to optimize the location of the pore centre. The grid has 0.1 Å squares, it is centred at the pore centre, and its size depends on the sequence length of the protein and on the size of the pore.
25 Ιουν 2024 · The Protein Symmetry Browser combines two different ways of organizing assemblies in the PDB - level of symmetry and type of symmetry operation. You can search for a specific type of point symmetry by its Schoenflies symbol (e.g., Cn, Dn, T, O, or I) or by helical symmetry H. Learn more about Schoenflies symbols.
2 Αυγ 2012 · Option 1: use xaxp to define the axis labels. plot(x,y, xaxt="n") axis(1, xaxp=c(10, 200, 19), las=2) Option 2: Use at and seq() to define the labels: plot(x,y, xaxt="n") axis(1, at = seq(10, 200, by = 10), las=2) Both these options yield the same graphic:
I have a protein with 5 transmembrane helices and I would like to calculate the protein axis in order to reproduce some data... They define the protein axis as the sum of TM secondary...
15 Σεπ 2005 · Periodic secondary structures generate regularities that can be used as criteria to define them, e.g., C α distances, dihedral angles, like α angles or pairs of (Φ/Ψ) angles, and specific patterns of hydrogen bonds. Along the years, various methods using these criteria have been proposed.
The peptide planes are roughly parallel with the helix axis and the dipoles within the helix are aligned, i.e. all C=O groups point in the same direction and all N-H groups point the other way. Side chains point outward from helix axis and are generally oriented towards its amino-terminal end.
