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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" disulfinder \- cysteines disulfide bonding state and connectivity predictor .SH "SYNOPSIS" .IX Header "SYNOPSIS" disulfinder [\s-1OPTIONS\s0] .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&'disulfinder' is for predicting the disulfide bonding state of cysteines and their disulfide connectivity starting from sequence alone. Disulfide bridges play a major role in the stabilization of the folding process for several proteins. Prediction of disulfide bridges from sequence alone is therefore useful for the study of structural and functional properties of specific proteins. In addition, knowledge about the disulfide bonding state of cysteines may help the experimental structure determination process and may be useful in other genomic annotation tasks. \&'disulfinder' predicts disulfide patterns in two computational stages: (1) the disulfide bonding state of each cysteine is predicted by a BRNN-SVM binary classifier; (2) cysteines that are known to participate in the formation of bridges are paired by a Recursive Neural Network to obtain a connectivity pattern. .SH "REFERENCES" .IX Header "REFERENCES" .IP "A. Ceroni, A. Passerini, A. Vullo and P. Frasconi. \s-1DISULFIND:\s0 a Disulfide Bonding State and Cysteine Connectivity Prediction Server, Nucleic Acids Research, 34(Web Server issue):W177\-W181, 2006." 4 .IX Item "A. Ceroni, A. Passerini, A. Vullo and P. Frasconi. DISULFIND: a Disulfide Bonding State and Cysteine Connectivity Prediction Server, Nucleic Acids Research, 34(Web Server issue):W177-W181, 2006." .PP For the disulphide connectivity predictor see: .IP "A. Vullo and P. Frasconi. Disulfide Connectivity Prediction using Recursive Neural Networks and Evolutionary Information, Bioinformatics, 20, 653\-659, 2004." 4 .IX Item "A. Vullo and P. Frasconi. Disulfide Connectivity Prediction using Recursive Neural Networks and Evolutionary Information, Bioinformatics, 20, 653-659, 2004." .PP For the cystein bonding state predictor see: .IP "P. Frasconi, A. Passerini, and A. Vullo. A Two-Stage \s-1SVM\s0 Architecture for Predicting the Disulfide Bonding State of Cysteines, Proc. \s-1IEEE\s0 Workshop on Neural Networks for Signal Processing, pp.25\-34, 2002." 4 .IX Item "P. Frasconi, A. Passerini, and A. Vullo. A Two-Stage SVM Architecture for Predicting the Disulfide Bonding State of Cysteines, Proc. IEEE Workshop on Neural Networks for Signal Processing, pp.25-34, 2002." .PD 0 .IP "A.Ceroni, P.Frasconi, A.Passerini and A.Vullo. Predicting the Disulfide Bonding State of Cysteines with Combinations of Kernel Machines, Journal of \s-1VLSI\s0 Signal Processing, 35, 287\-295, 2003." 4 .IX Item "A.Ceroni, P.Frasconi, A.Passerini and A.Vullo. Predicting the Disulfide Bonding State of Cysteines with Combinations of Kernel Machines, Journal of VLSI Signal Processing, 35, 287-295, 2003." .PD .SH "OPTIONS" .IX Header "OPTIONS" .IP "\-a, \-\-alternatives=\fI\s-1NUMBER\s0\fR" 4 .IX Item "-a, --alternatives=NUMBER" alternative connectivity patterns (default=3) .IP "\-o, \-\-output=\fI\s-1DIR\s0\fR" 4 .IX Item "-o, --output=DIR" output dir where predictions will be saved (default=$PWD) .IP "\-p, \-\-psi2=\fIFILE|DIR\fR" 4 .IX Item "-p, --psi2=FILE|DIR" input in psi2 format (PSI-BLAST Matrix in \s-1ASCII\s0), either a single file or a directory(?). Generate this with \f(CW\*(C`blastpgp \-j \-Q FILE\*(C'\fR where N >= 2. .IP "\-r, \-\-rootdir=\fI\s-1DIR\s0\fR" 4 .IX Item "-r, --rootdir=DIR" work directory (default=\fI~/disulfinder\fR) .IP "\-k, \-\-pkgdatadir=\fI\s-1DIR\s0\fR" 4 .IX Item "-k, --pkgdatadir=DIR" package data directory containing Models (default=\fI/usr/share/disulfinder\fR) .IP "\-F, \-\-format={html|ascii}" 4 .IX Item "-F, --format={html|ascii}" output format type (default=ascii) .IP "\-d \-\-blastdb=\fI\s-1DIR\s0\fR" 4 .IX Item "-d --blastdb=DIR" blastpgp \-d option (default=/data/sp+trembl) .IP "\-c, \-\-cleanpred" 4 .IX Item "-c, --cleanpred" cleanup intermediate prediction files (default=false) .IP "\-P, \-\-usepssm" 4 .IX Item "-P, --usepssm" use pssm instead of counts for profiles (default=false) .IP "\-C, \-\-knownbondingstate" 4 .IX Item "-C, --knownbondingstate" assume bonding state is known (one file for each chain in directory /Predictions/Bondstate/Viterbi) (default=false) .IP "\-v, \-\-version" 4 .IX Item "-v, --version" disulfinder version .IP "\-?, \-\-help" 4 .IX Item "-?, --help" help screen .SH "EXAMPLES" .IX Header "EXAMPLES" \&\f(CW\*(C`disulfinder \-a 1 \-p /usr/share/doc/disulfinder/examples/res_id_41483.blastPsiMatTmb \-o ./disulfinder_results_dir\*(C'\fR .SH "FILES" .IX Header "FILES" .IP "\fI/usr/share/disulfinder\fR" 4 .IX Item "/usr/share/disulfinder" default package data directory .IP "\fI~/disulfinder\fR" 4 .IX Item "~/disulfinder" default work directory .SH "RESTRICTIONS" .IX Header "RESTRICTIONS" The work directory is not cleaned up automatically. .SH "AUTHOR" .IX Header "AUTHOR" Ceroni A, Passerini A, Vullo A, Frasconi P. .PP Packaging by Laszlo Kajan .SH "COPYRIGHT AND LICENSE" .IX Header "COPYRIGHT AND LICENSE" \&\s-1GPL\s0 .SH "SEE ALSO" .IX Header "SEE ALSO" .IP "See official web site for help:" 4 .IX Item "See official web site for help:" .IP "\s-1DISULFIND:\s0 a disulfide bonding state and cysteine connectivity prediction server:" 4 .IX Item "DISULFIND: a disulfide bonding state and cysteine connectivity prediction server:"