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Table 1 A comparison of hypotheses on the scenario of the origin of translation.

From: The scenario on the origin of translation in the RNA world: in principle of replication parsimony

Hp: No. name [ref.]

Author(s)

Peptides' specificity

tRNAs

mRNAs

rRNAs

aa-tRNA

specificity

  

Ad.

Or.

Ad.

Or.

Ad.

Or.

 

1. DRT [20, 22]

Yarus et al.

+â–²

+

Oâ–²

-

Oâ–²

O

O

Oâ–²

2. GT [28, 29]

Weiner & Maizels

O

O

+

-

-

-

-

-

3. CCH [15, 30]

Szathmary

O

O

+

+

-

-

-

+â–²

4. TR [53] Gordon;

[54] Poole et al.

O

+

+

-

O

O

+

-

5. [16] Wolf & Koonin

+

+

+â–²

-

O

+

+

O

6. [1] Crick et al.

O

O

-

-

-

O

-

-

7. [55] Knight

& Landweber

O

O

O

O

-

-

-

+

8. [56] Di Giulio

O

O

O

-

-

O

-

-

9. [57] Noller

O

O

-

-

-

O

+â–²

-

10. [50] Brosius

-

O

+

-

O

O

+

-

11. [51] Schimmel

& Henderson

-

O

+

-

O

O

-

-

12. [52] Bernhardt

& Tate

-

O

+

+

O

O

-

-

13. [39] Baranov et al.

-

O

+

-

O

O

-

-

14. [49] Yakhnin

N/A

+

+

-

O

O

+

-

â–² DRT-RP

+

+

+

+

+

+

-

+

  1. The names of hypotheses: DRT (Direct RNA Templating); GT (Genomic Tag); CCH (Coding Coenzyme Handles); TR (Triplet Replicase); â–²DRT-RP (Direct RNA Template - Replication Parsimony), the present hypothesis; the others were not given a name. For tRNAs, mRNAs and rRNAs, "Ad." means "the direct advantage of their emergence", while "Or." means "the original source of their emergence". In general, "+" means "clearly stated"; "-" means "not stated"; "O" means "implied or stated in an abstract way"; "N/A" means "Not Applicable"; "â–²" means "associated with the present hypothesis". See text for detailed explanations.