could not find any foreground sequence

[pariswu1988]

require(rmotifx) fg.seqs = readLines(file("fg.txt")) fg.seqs [1] "VSSAKELDSSsEAVSGNSDKV" "KELDSSSEAVsGNSDKVGADD" [3] "GRVVVGGSELtSSPKEIKNVE" "EVSKIEMPGNsGDIRNLHVGL" [5] "SGKTCQPSSStQPEDENRNSL" "AKSQLADTEPsSSLTAVQKNI" [7] "SYGRSDDQVEsYIKPSYGRSE" "VEFSRGAPRGsRDFDSRGPPP" [9] "LASINVENVEsNRRALRELLF" "STRNANEDSAsTGEPIETKSR" bg.seqs = readLines(file("bg.txt")) bg.seqs [1] "AHLIRFLVGQIFEPTIFLIQI" "CSYDPWNLRFQSKYKSRDAMW" [3] "DPTPAFVPNMTSSAGSVVNQS" "ENFEFLVDERTSMQQHYSDHR" [5] "FRGKIGHKRVLVFLDGRYPDK" "HVLYNAINPATVNIQHLLWKL" [7] "HVLYNAINPATVNIQHLLWKL" "IECERMIIFIDLILHRPKVYR" [9] "IECERMIIFIDLILHRPKVYR" "IFEDTSSSTDSVGSSDEPGHT" [11] "KWKLTGESVEVKDQWGFCSEG" "LENAQWNYLKNMIIGVLLFIS" [13] "LEYDFANHGGQWLSDYIDLQQ" "LVCCSFTSHLIPNIEVPNFLS" [15] "LVWEFPMSVIFFVDILLLTSN" "MAASEHRCVGCGFRVKSLFIQ" [17] "MAASEHRCVGCGFRVKSLFIQ" "MAEDSIKIPPSTNTVKQSWIV" [19] "MEDQVGFGFRPNDEELVGHYL" "NAAFIISFAIATKGLLNEVSR" [21] "NAAFIISFAIATKGLLNEVSR" "PKKPVSGVLPDDSSDTETGSM" [23] "QFNENSNIMQQQPLQGSFNPL" "QPKQQSKEKVISSQKSECEWK" [25] "QVPYLAPYENESEMIWKHVIE" "RIDDIPSLNIIEPLHNYKAQE" [27] "RNKIEGNTSRDVEVAISEVNI" "RQRNSGSYNTYSEYDSANHGQ" [29] "RREIMLGIFISSYFKIFLLAM" "RREIMLGIFISSYFKIFLLAM" [31] "SMALKVMTESTMTRCIAVCLI" "SSFSDSPVLLSIKVLIGVLSA" [33] "SSFSDSPVLLSIKVLIGVLSA" "TKSDWVIHEFHYDLLPEHQRT" [35] "VFAYLLLDCYRSLLLRKSDEE" "VFAYLLLDCYRSLLLRKSDEE" [37] "YFFSRRENNKGNRQSRTTVSG" "YSPGNIRLMKCGNCKEVADEY" [39] "YSPGNIRLMKCGNCKEVADEY" "YVICRLEYKGDDADILSAYAI" mot=motifx(fg.seqs, bg.seqs, central.res = 'ST', min.seqs = 20, pval.cutoff = 1e-06,verbose = F, perl.impl = F) Error in .CheckEmptySeqs() : Could not find any foreground sequences!