What is more, the column of the luminance matrix
All matrices were searched with default settings; however only those putative transcription factor-binding sites with a core similarity of 0.75 or greater are reported here.
Only vertebrate sites and weight matrices were searched with background (A+T -content of 60.4% (A+T -content)-coftent for all human CNE sequences) or 57.4% (average (A+T)-content for all fugu CNE sequences).
"The statistical model: Most known motifs have a single, possibly degenerate, consecutive pattern (often represented by a position weight matrix) and the motifs you are searching have a unique pattern of fixed head-spacer-fixed tail pattern.
Processed data was searched with Mascot (matrix science) search engine against Swiss-Prot database with the following parameters: human taxonomy; 20 ppm precursor mass tolerance; 0.25 Da fragment ion tolerance; trypsin enzyme; one missed cleavage allowed; carbamidomethylation of cysteine and oxidation of methionine as variable modifications.
A common idea is that similar sequences should be searched with 'hard' matrices (created from less divergent sequences) and remote sequences should be searched with 'soft' matrices (built from more divergent sequences) [ 50].
Each of the other genomes was searched with this search matrix using CompareACE, and N-way conserved sites were identified.
Tandem mass spectra were searched by Mascot (version 2.2.0.4) (Matrix Science, Boston, MA).
All identified proteins and peptides from protein digest samples were assigned from protein database searches of the LC/MS/MS data, using in-house processing with MASCOT search engine (in-house licensed, ver. 2.2.7, Matrix Science, Inc .. Mascot searching was performed from an in-house computer, in which NCBI and "custom" protein databases were searched.
Acquired MS/MS spectra were searched against the non-redundant protein subset database (Ludwig NR_subset version_Q407) using the Mascot™ search algorithm (v2.1, Matrix Science, U.K .. Searches were conducted with carboxymethylation of cysteine as a fixed modification (+58 Da), variable oxidation of methionine (±16 Da) and an allowance for up to 3 missed tryptic cleavages.
