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. 2020 Jun 5;11:688. doi: 10.3389/fphar.2020.00688

Table 1.

Natural polypeptides having activity against elastase and their IC50s.

Compound Name IC50 against HNE/µM IC50 against PPE/µM Reference
Anti-elastase polypeptides of bacterial origin 1 Lyngbyastatin 4 0.049 0.03 (Matthew et al., 2007; Salvador et al., 2013)
In another study, 0.04
2 Lyngbyastatin 5 0.0032 (Taori et al., 2007; Salvador et al., 2013)
3 Lyngbyastatin 6 0.0033 (Taori et al., 2007; Salvador et al., 2013)
4 Lyngbyastatin 7 0.0023 0.0083 (Taori et al., 2007; Salvador et al., 2013)
In another study, 0.003
5 Somamide B 0.0095 0.0095 (Taori et al., 2007; Salvador et al., 2013)
6 Lyngbyastatin 8 0.123 (Kwan et al., 2009)
7 Lyngbyastatin 9 0.210 (Kwan et al., 2009)
8 Lyngbyastatin 10 0.120 (Kwan et al., 2009)
9 Bouillomide A 1.9 (Rubio et al., 2010)
10 Bouillomide B 1.9 (Rubio et al., 2010)
11 Kempopeptin A 0.3 (Taori et al., 2008)
12 Tiglicamide A 2.1 (Matthew et al., 2009b)
13 Tiglicamide B 6.9 (Matthew et al., 2009b)
14 Tiglicamide C 7.3 (Matthew et al., 2009b)
15 Largamide A 1.4 (Matthew et al., 2009a)
16 Largamide B 0.5 (Matthew et al., 2009a)
17 Largamide C 1.2 (Matthew et al., 2009a)
18 Symplostatin 5 0.068 (Salvador et al., 2013)
19 Symplostatin 6 0.089 (Salvador et al., 2013)
20 Symplostatin 7 0.077 (Salvador et al., 2013)
21 Symplostatin 8 0.041 0.043 (Salvador et al., 2013)
22 Symplostatin 9 0.028 0.037 (Salvador et al., 2013)
23 Symplostatin 10 0.021 0.044 (Salvador et al., 2013)
24 Stigonemapeptin 0.3 (Kang et al., 2012)
25 Oscillapeptin 2.5 (Shin et al., 1995)
26 Oscillapeptin A 2.5 (Itou et al., 1999)
27 Oscillapeptin B 4.2 (Itou et al., 1999)
28 Oscillapeptin D 2.6 (Itou et al., 1999)
29 Oscillapeptin E 2.7 (Itou et al., 1999)
30 Oscillapeptin G 1.0 (Fujii et al., 2000)
31 Oscillapeptilide 97-A 6.9 (Fujii et al., 2000)
32 Oscillapeptilide 97-B 3.9 (Fujii et al., 2000)
33 Microviridin I 1.9 (Fujii et al., 2000)
34 Microviridin G 1.0 (Murakami et al., 1997)
35 Microviridin H 1.7 (Murakami et al., 1997)
36 Nostopeptin A 1.3 (Okino et al., 1997)
37 Nostopeptin B 1.2 (Okino et al., 1997)
38 Insulapeptolide A 0.1 (Mehner et al., 2008)
39 Insulapeptolide B 0.1 (Mehner et al., 2008)
40 Insulapeptolide C 0.09 (Mehner et al., 2008)
41 Insulapeptolide D 0.08 (Mehner et al., 2008)
42 Insulapeptolide E 3.2 (Mehner et al., 2008)
43 Insulapeptolide F 1.6 (Mehner et al., 2008)
44 Insulapeptolide G 3.5 (Mehner et al., 2008)
45 Insulapeptolide H 2.7 (Mehner et al., 2008)
46 Microviridin C 2.6 (Okino et al., 1995)
47 Microviridin C 4.8 (Okino et al., 1995)
48 Micropeptin MM836 45.5 (Zafrir-ilan and Carmeli, 2010)
49 Micropeptin MM932 4.4 (Zafrir-ilan and Carmeli, 2010)
50 Micropeptin MM978 19.1 (Zafrir-ilan and Carmeli, 2010)
51 Anabaenopeptin MM823 50.5 (Zafrir-ilan and Carmeli, 2010)
52 anabaenopeptin MM850 14.3 (Zafrir-ilan and Carmeli, 2010)
53 Micropeptin HH978 17.6 (Lodin-Friedman and Carmeli, 2013)
54 Micropeptin HH960 55.5 (Lodin-Friedman and Carmeli, 2013)
55 Micropeptin HH992 16.9 (Lodin-Friedman and Carmeli, 2013)
56 micropeptin DR1006 13.0 (Adiv et al., 2010)
57 Molassamide 0.03 (Gunasekera et al., 2010)
58 Scyptolin A 1.6 (Matern et al., 2001; Matern et al., 2003a)
59 Scyptolin B 1.4 (Matern et al., 2001; Matern et al., 2003a)
60 planktopeptin BL1125 0.096 (Grach-pogrebinsky et al., 2003)
61 planktopeptin BL843 1.7 (Grach-pogrebinsky et al., 2003)
62 planktopeptin BL1061 0.040 (Grach-pogrebinsky et al., 2003)
63 brunsvicamide A 3.1 (Sisay et al., 2009)
64 Brunsvicamide B 2.0 (Sisay et al., 2009)
65 Brunsvicamide C 4.4 (Sisay et al., 2009)
66 FR901277 0.2 0.3 (Nakanishi et al., 2000b)
67 FR134043 0.04 (Nakanishi et al., 2000a)
68 YM-47141 1.5 (Orita et al., 1995; Yasumuro et al., 1995)
69 YM-47142 3.0 (Orita et al., 1995; Yasumuro et al., 1995)
Anti-elastase polypeptide of plant origin 70 Ixorapeptide II 5.6 (Lee et al., 2010)
Anti-elastase polypeptides of fungal origin 71 Desmethylisaridin C2 10.0 (Chung et al., 2013)
72 Isaridin E 12.7 (Chung et al., 2013)
73 Isaridin C2 12.1 (Chung et al., 2013)
74 Roseocardin 15.1 (Chung et al., 2013)