From: The evolution and functional repertoire of translation proteins following the origin of life
Statistic | Protein category | ancestry ≤ 19% (prior to DNA genome) |  | ancestry ≤ 40% (prior to divergence of LUCA) |  | ancestry ≤ 100% (all protein folds) | ||
---|---|---|---|---|---|---|---|---|
 | tRNA-related proteins | 41.5% |  | 72.2% |  | 100% | ||
 | Regulation of translation | 37.5% |  | 50.0% |  | 100% | ||
Final fold | Ribosomal proteins | 25.0% | Â | 37.5% | Â | 100% | ||
expansion | Â | Â | Â | Â | Â | Â | Â | Â |
 | Canonical TCA enzymes | 50.0% |  | 85.7% |  | 100% | ||
 | Immune system proteins | 18.2% |  | 27.3% |  | 100% | ||
 | Whole proteome | 6.5% |  | 21.0% |  | 100% | ||
 | tRNA-related proteins | 4.2% |  | 16.7% |  | 70.6% | ||
 | Regulation of translation | 3.9% |  | 12.0% |  | 60.3% | ||
Area | Ribosomal proteins | 2.5% | Â | 8.8% | Â | 62.1% | ||
under | Â | Â | Â | Â | Â | Â | Â | Â |
curve | Canonical TCA enzymes | 4.7% | Â | 18.0% | Â | 77.0% | ||
 | Immune system proteins | 0.4% |  | 5.0% |  | 35.1% | ||
 | Whole proteome | 0.5% |  | 3.3% |  | 40.3% |