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Table 2 Association of GG4 and GG7 pairs with Pfam-A families annotated as transporters, symporters, and channels

From: Genomic analysis of membrane protein families: abundance and conserved motifs

Pairs

Pfam-A families as transporter/ symporter/channel

All Pfam-A families

Percentage (%)

GG4

18

38

47.4

GA4 AG4 AA4

11

36

30.6

GS4 SG4 SS4

4

25

16

GG7

7

16

43.8

GA7 AG7 AA7

5

18

27.8

GS7 SG7 SS7

6

22

27.3

All pairs

45

168

26.7

  1. A pair XYn corresponds to amino acids X and Y separated by (n-1) residues.