Temperature value: Difference between revisions
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The ''temperature factor'' (also called the ''temperature value, B factor, B value'', or ''Debye-Waller factor'') is | The ''temperature factor'' (also called the ''temperature value, B factor, B value'', or ''Debye-Waller factor'') is | ||
<blockquote> | <blockquote> | ||
a factor that can be applied to the X-ray scattering term for each atom (or for groups of atoms) that describes the degree to which the electron density is spread out. While the theory is that the B-factor indicates the true static or dynamic mobility of an atom, it can also indicate where there are errors in model building.<ref>This description of the B-factor is quoted from [http://pldserver1.biochem.queensu.ca/~rlc/work/teaching/definitions.shtml Robert L. Campbell's website on Protein Crystallography] at Queens University, Kingston, Ontario, Canada.</ref> | "a factor that can be applied to the X-ray scattering term for each atom (or for groups of atoms) that describes the degree to which the electron density is spread out. While the theory is that the B-factor indicates the true static or dynamic mobility of an atom, it can also indicate where there are errors in model building."<ref name="rcampbell">This description of the B-factor is quoted from [http://pldserver1.biochem.queensu.ca/~rlc/work/teaching/definitions.shtml Robert L. Campbell's website on Protein Crystallography] at Queens University, Kingston, Ontario, Canada.</ref> | ||
</blockquote> | </blockquote> | ||
The B-factor is given<ref name="rcampbell" /> by | |||
<center>B<sub>i</sub> = 8π<sup>2</sup>U<sub>i</sub><sup>2</sup></center> | |||
==Disorder== | ==Disorder== | ||
