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. 2015 Mar 30;10(3):e0123147. doi: 10.1371/journal.pone.0123147

Table 2. The top 23 important proteins for the classification of the 10 cancer types.

Order Name Gene Name Protein function and regulatory pathways
1 FASN FASN Fatty acid synthase (FASN) catalyzes the synthesis of long-chain fatty acids from acetyl-CoA and malonyl-CoA. Indicated as a poor prognosis in breast and prostate cancer.
2 Claudin-7 CLDN7 Claudins make up tight junction strands.
3 PR PGR Progesterone receptor, Transcription Factor
4 TIGAR C12ORF5 Regulates p53 tumor suppressor pathway and glycolysis
5 GATA3 GATA3 Transcription factor
6 NDRG1_pT346 NDRG1 A member of the NDRG family functions in growth, differentiation, and cell survival
7 AR AR Androgen receptor (AR). Transcription Factor
8 PREX1 REX1 Downstream of Heterotrimeric G proteins (Guanine nucleotide exchange factor)
9 PEA15_pS116 PEA15 Implicated in the regulation of multiple cellular processes including apoptosis, integrin activation, and insulin-sensitive glucose transport in insulin-responsive cells. Its activation is mediated through binding to multiple proteins, including ERK1&2, RSK2, Akt, FADD, and Caspase-8.
10 Cyclin_B1 CCNB1 Cyclin B1 regulates mitosis. Cyclin B1 levels rise during S phase and G2, and peak at mitosis.
11 ER-alpha ESR1 Estrogen receptor, Transcription Factor
12 AMPK_alpha PRKAA1 Involved in energy homeostasis regulation
13 Acetyl-a-Tubulin-Lys40 The cytoskeleton consists of three types of cytosolic fibers: microtubules, microfilaments (actin filaments), and intermediate filaments. Acetylation of α-tubulin at Lys40 is required for dynamic cell shape remodeling, cell motility, tubulin stability and terminal branching of cortical neurons
14 Rab-25 Rab-25 A member of Rab11 family possesses small Ras-like GTPase activity. Increased Rab25 expression is associated with aggressive growth in ovarian and breast cancer, where Rab25 may inhibit apoptosis and promote cancer cell proliferation and invasion through regulation of vesicle transport and cellular motility.
15 Chk2 CHEK2 Kinase acts downstream of ATM/ATR involving in DNA damage checkpoint control, embryonic development, and tumor suppression
16 E-Cadherin CDH1 A member of transmembrane glycoprotein superfamily, Mediate calcium-dependent cell-cell adhesion and normal tissue development.
17 ACC1 ACACA Key enzyme in the biosynthesis and oxidation of fatty acids. Involved in energy homeostasis regulation
18 GAPDH GAPDH Glyceraldehyde 3-phosphate dehydrogenase
19 PKC-alpha_pS657 PRKCA PKC alpha is an ubiquitously expressed PKC isozyme that has been implicated in the regulation of a broad range of cellular functions
20 TRFC TFRC Transferrin Receptor
21 Cyclin_E1 CCNE1 Cyclin E has been found to be associated with the transcription factor E2F in a temporally regulated manner. The cyclin E/E2F complex is detected primarily during the G1 phase of the cell cycle and decreases as cells enter S phase. E2F is known to be a critical transcription factor for expression of several S phase specific proteins.
22 CD20 CD20 A surface molecule of B-lymphocyte during the differentiation of B-cells into plasma cells
23 GAB2 GAB2 A docking protein, which mainly mediates the interaction between receptor tyrosine kinases (RTKs) and non-RTK receptors.