The phrase "abundance factor" is correct and usable in written English.
It can be used in contexts discussing the quantity or degree of something, often in relation to resources or attributes.
Example: "The abundance factor of the region's natural resources has attracted many investors looking to capitalize on its potential."
Alternatives: "plenty index" or "resource level".
We have assessed seven methods used across the literature for detecting differential expression from spectral count quantification: Student's t-test, significance analysis of microarrays (SAM), normalised spectral abundance factor (NSAF), normalised spectral abundance factor-power law global error model (NSAF-PLGEM), spectral index (SpI), DESeq and QSpec.
The total spectral counts per 100 residues (SCPHR) were calculated for each identified protein and further normalized against Brx1, Ebp2, Erb1, Ytm1, Nop7, Cic1 and Has1, yielding the relative spectral abundance factor (RSAF) (Supplementary Dataset 1).
However, if the latter were not true, then it is possible that the Y2H screen could be influenced by some other abundance factor related to post-transcriptional modification.
To estimate relative amounts of the various cellulosomal proteins, Normalized Spectral Abundance Factor (NSAF) values [50] were calculated for proteins identified in each LC-MS/MS measurement.
To estimate abundance levels of the 946 proteins identified in the three stromal preparations, we calculated first the abundance factor (AF) from unique counts, and subsequently normalized AF for number of observable tryptic peptides yielding NAF.
Relative abundance of the identified cryptococcal proteins was determined by normalized spectral abundance factor.
Relative protein levels were estimated by calculating distributed normalized spectral abundance factors (dNSAF) [11].
To estimate relative protein levels, Normalized Spectral Abundance Factors (NSAFs) were calculated for each detected protein, as described [38].
In the two element case it is expressed by,
Quantification was performed based on normalised spectral abundance factors, calculated from MS spectra.
Normalized spectral abundance factors (NSAF) were calculated according to Zybailov et al. [ 89].
