Returns almost all features that has been extracted from Position Specific
Scoring Matrix (PSSM) so far, which is a matrix of L rows (L is protein length)
and 20 columns produced by 'PSI-BLAST' which is a program to produce
PSSM Matrix from multiple sequence alignment of proteins
see < https://www.ncbi.nlm.nih.gov/books/NBK2590/> for mor details. some
of these features are described in Zahiri, J., et al.(2013)