Exploratory Data Analysis
(1) Missing sequence profile 3emn.X --> removed from dataset as it was
	Eukaryote from Mouse. It has 19 transmembrane segments (prokaryotes
only have even number). Check Boctopus paper only 36 proteins used.

(2) Check PDB entry updates for RSAS as chains from Boctopus data do not
	match PDB entries.
	--> 1e54.E, 3a25.G, 3prn.C, 2por.C 

(3) Hydrophobic Moment

Todo:-
Other feature indicators and encodings. Also use PCA to reduce
dimensions of features.
Obtain grammar for TMBs from Fariselli.
Decide on number of mixtures for hidden states (clustering analysis?)