In the current release of the MEROPS database (release 9.7, 1 August 2012), for peptidases there are 60 clans, 236 families and 3944 identifiers, derived from 264 093 sequences.
To perform the experimental analysis, we selected a publicly available dataset of real personal identifiers, derived from the North Carolina voter registration list (NCVR) [17].
The division was made according to alphabetical order of helix pair identifiers derived from the PDB codes.
One would be to use genetic gene designations, whereas the alternative is the use of gene identifiers derived from genomic projects.
We generated molecular networks using a data set containing gene identifiers derived from a list of putative gene targets for each miRNA studied.
To simplify identification and enable easy reference, all sequences in the assembly were assigned a unique identifier derived from the Trinity graph component and appended with a splice number that followed the form of "Pqx.y", where "Pq" stands for Panax quinquefolias, "x" is the Trinity component number and "y" is the splice variant number.
To link measurements to the participants' surveys, measurements were labelled using either the survey identification number or a "porn star name", a novel anonymous identifier derived from name of first pet and name of first street [ 20], which was also reported in the questionnaire.
InChIKey is a compact chemical identifier derived from InChI.
An anonymised patient identifier, derived from the patient's NHS number, was used to match admissions of the same patient to different hospitals.
To ensure maximum coverage of the population while avoiding double counting, the linkage method uses a unique patient identifier deriving from information on persons' names, date and place of birth and gender, according to Italian privacy legislation.
Gene Symbols and official Identifiers were derived from the HUGO Gene Nomenclature Committee HGNCC) database (http://www.genenames.org/aboutHGNC.html), and the GeneGo ontology was used to annotate protein functions (Additional file 2: Table S 2).
