CTD Descriptors - Composition

Usage

extractProtCTDC(x)

Arguments

x: A character vector, as the input protein sequence.

Value

A length 21 named vector

Details

This function calculates the Composition descriptor of the CTD descriptors (Dim: 21).

References

Inna Dubchak, Ilya Muchink, Stephen R. Holbrook and Sung-Hou Kim. Prediction of protein folding class using global description of amino acid sequence. Proceedings of the National Academy of Sciences. USA, 1995, 92, 8700-8704.

Inna Dubchak, Ilya Muchink, Christopher Mayor, Igor Dralyuk and Sung-Hou Kim. Recognition of a Protein Fold in the Context of the SCOP classification. Proteins: Structure, Function and Genetics, 1999, 35, 401-407.

Examples

x = readFASTA(system.file('protseq/P00750.fasta', package = 'Rcpi'))[[1]]
extractProtCTDC(x)
#>  hydrophobicity.Group1  hydrophobicity.Group2  hydrophobicity.Group3 
#>             0.29715302             0.40569395             0.29715302 
#> normwaalsvolume.Group1 normwaalsvolume.Group2 normwaalsvolume.Group3 
#>             0.45195730             0.29715302             0.25088968 
#>        polarity.Group1        polarity.Group2        polarity.Group3 
#>             0.33985765             0.33274021             0.32740214 
#>  polarizability.Group1  polarizability.Group2  polarizability.Group3 
#>             0.33096085             0.41814947             0.25088968 
#>          charge.Group1          charge.Group2          charge.Group3 
#>             0.11032028             0.79003559             0.09964413 
#> secondarystruct.Group1 secondarystruct.Group2 secondarystruct.Group3 
#>             0.38967972             0.29537367             0.31494662 
#>   solventaccess.Group1   solventaccess.Group2   solventaccess.Group3 
#>             0.43060498             0.29715302             0.27224199