Table 2. Number and percentages of amino acids present in the NTDs of selected bacterial Tcps estimated by ExPASy-ProtParam tool.
| Amino acid | No. (%) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| N-TcpC | N-TIpA | N-BtpA | N-BtpB | N-PdTLP | N-YpTdp | N-TirS | N-SaTIp1 | N-HP1437 | N-TcpYI | N-TcpYIII | |
| A (Ala) | 11 (6.5) | 7 (4.4) | 20 (16.9) | 12 (7.7) | 34 (20.6) | 6 (4.4) | 4 (2.8) | 11 (5.4) | 6 (7.2) | 10 (10.9) | 10 (11.0) |
| R (Arg) | 4 (2.4) | 10 (6.3) | 6 (5.1) | 9 (5.8) | 12 (7.3) | 4 (2.9) | 8 (5.6) | 11 (5.4) | 1 (1.2) | 8 (8.7) | 9 (9.9) |
| N (Asn) | 21 (12.4) | 10 (6.3) | 0 (0) | 5 (3.2) | 5 (3.0) | 9 (6.6) | 14 (9.9) | 15 (7.4) | 9 (10.8) | 5 (5.4) | 3 (3.3) |
| D (Asp) | 7 (4.1) | 9 (5.7) | 5 (4.2) | 11 (7.1) | 6 (3.6) | 9 (6.6) | 6 (4.2) | 8 (4.0) | 6 (7.2) | 0 (0) | 0 (0) |
| C (Cys) | 1 (0.6) | 1 (0.6) | 0 (0) | 3 (1.9) | 0 (0) | 2 (1.5) | 0 (0) | 0 (0) | 0 (0) | 3 (3.3) | 3 (3.3) |
| Q (Gln) | 7 (4.1) | 14 (8.8) | 12 (10.2) | 7 (4.5) | 11 (6.7) | 5 (3.7) | 11 (7.7) | 10 (5.0) | 4 (4.8) | 3 (3.3) | 0 (0) |
| E (Glu) | 10 (5.9) | 11 (6.9) | 11 (9.3) | 12 (7.7) | 13 (7.9) | 14 (10.3) | 14 (9.9) | 18 (8.9) | 4 (4.8) | 1 (1.1) | 3 (3.3) |
| G (Gly) | 4 (2.4) | 2 (1.3) | 2 (1.7) | 8 (5.1) | 4 (2.4) | 3 (2.2) | 1 (0.7) | 3 (1.5) | 1 (1.2) | 9 (9.8) | 12 (13.2) |
| H (His) | 4 (2.4) | 3 (1.9) | 2 (1.7) | 4 (2.6) | 0 (0) | 6 (4.4) | 0 (0) | 4 (2.0) | 2 (2.4) | 1 (1.1) | 1 (1.1) |
| I (Ile) | 22 (12.9) | 16 (10.1) | 5 (4.2) | 8 (5.1) | 6 (3.6) | 16 (11.8) | 14 (9.9) | 13 (6.4) | 7 (8.4) | 1 (1.1) | 0 (0) |
| L (Lue) | 15 (8.8) | 11 (6.9) | 5 (4.2) | 14 (9.0) | 16 (9.7) | 13 (9.6) | 13 (9.2) | 15 (7.4) | 5 (6.0) | 1 (1.1) | 1 (1.1) |
| K (Lys) | 10 (5.9) | 25 (15.7) | 20 (16.9) | 9 (5.8) | 21 (12.7) | 7 (5.1) | 26 (18.3) | 40 (19.8) | 13 (15.7) | 1 (1.1) | 2 (2.2) |
| M (Met) | 3 (1.8) | 3 (1.9) | 4 (3.4) | 2 (1.3) | 4 (2.4) | 2 (1.5) | 5 (3.5) | 4 (2.0) | 2 (2.4) | 2 (2.2) | 1 (1.1) |
| F (Phe) | 15 (8.8) | 1 (0.6) | 2 (1.7) | 9 (5.8) | 0 (0) | 2 (1.5) | 0 (0) | 7 (3.5) | 4 (4.8) | 0 (0) | 0 (0) |
| P (Pro) | 3 (1.8) | 2 (1.3) | 0 (0) | 7 (4.5) | 5 (3.0) | 8 (5.9) | 2 (1.4) | 3 (1.5) | 4 (4.8) | 4 (4.3) | 8 (8.8) |
| S (Ser) | 10 (5.9) | 20 (12.6) | 15 (12.7) | 4 (2.6) | 12 (7.3) | 8 (5.9) | 12 (8.5) | 7 (3.5) | 9 (10.8) | 26 (28.3) | 19 (20.9) |
| T (Thr) | 4 (2.4) | 10 (6.3) | 6 (5.1) | 12 (7.7) | 12 (7.3) | 3 (2.2) | 7 (4.9) | 10 (5.0) | 1 (1.2) | 6 (6.5) | 7 (7.7) |
| W (Trp) | 4 (2.4) | 0 (0) | 0 (0) | 5 (3.2) | 0 (0) | 2 (1.5) | 0 (0) | 1 (0.5) | 0 (0) | 1 (1.1) | 1 (1.1) |
| Y (Tyr) | 11 (6.5) | 2 (1.3) | 1 (0.8) | 4 (2.6) | 1 (0.6) | 7 (5.1) | 1 (0.7) | 15 (7.4) | 2 (2.4) | 6 (6.5) | 6 (6.6) |
| V (Val) | 4 (2.4) | 2 (1.3) | 2 (1.7) | 11 (7.1) | 3 (1.8) | 10 (7.4) | 4 (2.8) | 7 (3.5) | 3 (3.6) | 4 (4.3) | 5 (5.5) |