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Table 7 Pfam proteins that originated near LAECA and their distribution in the viral world.

From: The origin of a derived superkingdom: how a gram-positive bacterium crossed the desert to become an archaeon

PFAM ID

Description

Archaea

Bacteria

Eukaryotes

Viruses

PF00136

DNA polymerase family B

45

195

31

384

PF03104

DNA polymerase family B, exonuclease domain

45

210

31

173

PF01068

ATP dependent DNA ligase domain

45

372

31

50

PF01096

Transcription factor S-II (TFIIS)

45

1

31

44

PF00867

XPG I-region

43

0

31

37

PF04566

RNA polymerase Rpb2, domain 4

45

0

32

31

PF04567

RNA polymerase Rpb2, domain 5

45

0

32

31

PF01896

Eukaryotic and archaeal DNA primase small subunit

44

159

31

30

PF04675

DNA ligase N terminus

44

167

31

20

PF04679

ATP dependent DNA ligase C terminal region

44

248

31

20

PF00752

XPG N-terminal domain

43

0

31

16

PF00705

Proliferating cell nuclear antigen, N-terminal domain

45

0

33

10

PF01191

RNA polymerase Rpb5, C-terminal domain

44

0

32

5

PF00352

Transcription factor TFIID (or TATA-binding protein, TBP)

45

0

33

4

PF01194

RNA polymerases N/8 kDa subunit

45

0

30

3

PF01981

Peptidyl-tRNA hydrolase PTH2

45

26

30

3

PF00382

Transcription factor TFIIB repeat

45

0

32

3

PF03876

RNA polymerase Rpb7-like, N-terminal domain

42

0

31

2

PF08542

Replication factor C

44

0

31

2

PF02933

Cell division protein 48 (CDC48), domain 2

45

18

31

1

PF01599

Ribosomal protein S27a

41

0

32

1

PF02359

Cell division protein 48 (CDC48), N-terminal domain

45

44

32

1

PF01873

Domain found in IF2B/IF5

45

0

33

1

PF01253

Translation initiation factor SUI1

45

287

33

1

  1. The Pfam familiess that originated in LAECA are more common in viruses than those that originated in LBCA.