Table 1

Characteristics of six genomic and proteomic data

Category

Feature abbreviation

Feature

Number of protein pairs

Number of proteins

Range

Data source

Genomic data

GE

Gene expression

19,653,315

6,270

[-1, 1]

[46]

ESS

Essentiality

667,590

1,156

{2, 1, 0}

[39]

SEQ

Sequence similarity

7,742

6,270

Real value-Non negative

[47]

TF

Transcription factor

19,397,106

6,229

Non-negative discrete, most 0

[48]

Proteomic data

DD

Domain-domain interaction

125,435

6,359

[0,1]

[49]

HO

Homology based PPI

177,667

6,270

Non-negative discrete, most 0, 1

[47,50]

Lei et al. BMC Bioinformatics 2012 13(Suppl 7):S3   doi:10.1186/1471-2105-13-S7-S3