In general, these databases are a collection of annotated multiple sequence alignments, which represent the evolutionarily conserved domains.
GRIND are alignment-independent 3D molecular descriptors which represent a molecule using a grid on which the product of pairs of force field interactions is plotted against the distances between the pairs [10].
Large gaps and hyper variable sites were removed from the alignments; the same methodology was applied to gaps at the beginning and end of the alignment, which represent missing sequence data.
In the case of the Firmicutes and Proteobacteria, which represent a large number of species, alignments were generated for each class.
The first centroid is taken to be the null alignment, which represents no warping.
IG9, which represents a basket of companies.
Which represents a bit of a problem.
The comparison of the two genomes is illustrated in fig. 1, which represents an alignment of the entire nucleotide sequences of the two phages, showing an identity of ≥95% over 94% of their genomes.
In lieu of removing these taxonomically-unbalancing sequences from the alignment, which would represent an unfortunate loss of data, we carried out further analyses using the recently developed multi-Clade approach [ 21].
Paired-end reads are used in the process of sequence assembly to join contigs (formed by read alignments) in structures called scaffolds, which represent sorted and correctly orientated contigs that are separated by gaps which sizes are estimated based on the average paired-end size (see, for example, [ 39]).
Without filtering, there are 21,989 sequences that have EST alignments, which is only 9.3% more than the number of sequences with filtered EST alignments (20,123 sequences) and which represents only a 6% increase in the percentage of the hypothetical proteome that is supported by experimental EST evidence.
