Table 1

Influence of organism composition on phyletic retention performance

Organisms Present

Cumulative PPV

Number Of Genes in Group

Number of Essential Genes

CMIM Selected Set Of 5

5

74.8%

139

104

4

66.8%

271

181

3

55.6%

435

242

2

42.0%

690

290

1

28.9%

1302

376

0

16.8%

3636

612

CMIM Selected Set of 7

7

77.0%

122

94

6

73.3%

206

151

5

65.3%

311

203

4

54.1%

455

246

3

43.0%

633

272

2

34.8%

952

331

1

25.1%

1613

405

0

16.8%

3636

612

Set of 27 Non-parasitic Gamma Proteobacteria

27

59.0%

305

180

24

46.6%

545

254

20

34.5%

861

297

16

27.3%

1247

341

12

23.9%

1697

405

8

20.3%

2235

453

4

18.3%

2845

521

Set of 179 prokaryotes

179

75.0%

12

9

161

75.3%

77

58

143

64.8%

196

127

126

54.4%

294

160

108

48.4%

419

203

90

39.7%

572

227

72

33.0%

817

270

54

26.8%

1172

314

37

22.4%

1659

371

19

19.2%

2379

457

1

17.0%

3516

596

Gustafson et al. BMC Genomics 2006 7:265   doi:10.1186/1471-2164-7-265