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Table 3a Summary of the Evolution of the Noller-Woese-Gutell 16S rRNA Comparative Structure Model. Categories marked with "*" are calculated compared to the 1999 version of the 16S rRNA model.

From: The Comparative RNA Web (CRW) Site: an online database of comparative sequence and structure information for ribosomal, intron, and other RNAs

Date of Model

1980

1983

1984–86

1989–90

1993–96

Current (1999)

1. Approximate # Complete Sequences

2

15

35

420

1000

7000

2.% of 1999 Sequences

0.03

0.2

0.5

6.0

14.3

100

3. # BP Proposed Correctly *

284

388

429

450

465

478

4. # BP Proposed Incorrectly *

69

49

38

28

6

0

5. Total BP in Model (#3 + #4)

353

437

477

478

471

478

6. % of BP in This Model that Appear in the Current Model (#3 / 478) *

59.4

81.2

89.7

94.1

97.3

100

7. Accuracy of Proposed BP (#3 / #5)

80.5

88.8

89.9

94.1

98.7

100

8. # BP in Current Model Missing from This Model (478 - #3) *

194

90

49

28

13

0

9. # Tertiary BP Proposed Correctly *

4

8

15

25

35

40

10. % Tertiary BP Proposed Correctly *

10.0

20.0

37.5

62.5

87.5

100

11. # Base Triples Proposed Correctly *

0

0

0

0

0

6

12. % Base Triples Proposed Correctly *

0

0

0

0

0

100