By Roland Glaser
Biophysics is the technological know-how of actual rules underlying all methods of lifestyles, together with the dynamics and kinetics of organic platforms.
This totally revised 2nd English version is an introductory textual content that spans all steps of organic association, from the molecular, to the organism point, in addition to affects of environmental elements. based on the large growth lately made, in particular in theoretical and molecular biophysics, the writer has up-to-date the textual content, integrating new effects and advancements referring to protein folding and dynamics, molecular points of membrane meeting and delivery, noise-enhanced techniques, and photo-biophysics. The advances made in theoretical biology within the final decade demand a completely new perception of the corresponding sections. hence, the booklet offers the history wanted for primary education in biophysics and, moreover, deals loads of complicated biophysical knowledge.
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Additional info for Biophysics: An Introduction (2nd Edition)
Primary structure – linear sequence of monomers (¼ elements) in the linear molecular chain (¼ system). For example, a polypeptide chain: . -serinealanine-lysine-arginine-. – Secondary structure – positioning in space of monomers (¼ elements) in a part of the molecule (¼ system) relative to each other. For example, the a-helix, or the b-sheet structure of an amino acid sequence in a protein. – Tertiary structure – position in space of molecular regions of homogeneous secondary structures (¼ elements) in a molecule (¼ system).
1) are the same as those on which the Shannon relation is based. Information (I) is a function of mathematical probability (P): I ¼ f ðPÞ The condition for the function f again, is satisfied by the logarithmic function, since here too, the multiplication rule for the calculation of probabilities must be valid (cf. Eq. 3). To obtain positive values of information, considering that P 1, the negative value of the logarithmic function must be used. 6) This is the Shannon equation of information theory.
44) The differential operator “grad” as well as the so-called Nabla operator ∇ means: derivation of the potential c to all three dimensions of space. It transforms the scalar c into vector E. 14 shows the equipotential lines and the field vectors around a positively charged point. The directions of these vectors correspond with the vectors of the electric field strength (E). According to convention, these arrows are always directed from the positive toward the negative pole. Similar illustrations can be seen in Figs.