Structure 2 Sequence Report

Structure-to-Sequence (s2s) is a computing process based on RDkit and the characteristics of cyclic peptide sequences, which can convert cyclic peptide SMILES into sequence information. This process mainly relies on the completeness of the monomer reference library. You can access our default monomer reference library through download link. The details of s2s are available on dfwlab/cyclicpepedia on Github. And you can use this tool online on the cyclicpepedia.


Version : 1.0.1 (2023-12-26)


Load SMILES :

SMILES : CCCCCCCCCCCCCC(=O)NCCCC[C@H](NC(=O)[C@@H]1CCCN1C(=O)[C@@H](NC(=O)[C@H](Cc1ccc(O)cc1)NC(=O)[C@H](Cc1ccccc1)NC(=O)[C@H](Cc1ccccc1)NC(=O)CNC(=O)[C@H](CCCNC(=N)N)NC(=O)[C@H](CCC(=O)O)NC(=O)CNC(=O)[C@@H]1CSSC[C@@H](C(=O)N[C@@H](CC(N)=O)C(=O)O)NC(=O)[C@H](Cc2ccc(O)cc2)NC(=O)[C@H](CC(N)=O)NC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](Cc2ccc(O)cc2)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CO)NC(=O)[C@@H]2CSSC[C@H](NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](CCC(=O)O)NC(=O)[C@@H](NC(=O)[C@@H](NC(=O)CN)[C@@H](C)CC)C(C)C)C(=O)N[C@@H](CSSC[C@H](NC(=O)[C@H](CC(C)C)NC(=O)[C@H](Cc3c[nH]cn3)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@H](CC(N)=O)NC(=O)[C@@H](NC(=O)[C@@H](N)Cc3ccccc3)C(C)C)C(=O)NCC(=O)N[C@@H](CO)C(=O)N[C@@H](Cc3c[nH]cn3)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](C)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](Cc3ccc(O)cc3)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](C(C)C)C(=O)N1)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CO)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N2)[C@@H](C)O)C(=O)O

SMILES is corrected!


Identify peptide skeleton and renumber atoms

No single main skeleton found in the peptide. Custom amino acid sorting strategy will be used!

Identify amino acid units


Obtain complete amino acid structures

Amino acid 1

Amino acid 2

Amino acid 3

Amino acid 4

Amino acid 5

Amino acid 6

Amino acid 7

Amino acid 8

Amino acid 9

Amino acid 10

Amino acid 11

Amino acid 12

Amino acid 13

Amino acid 14

Amino acid 15

Amino acid 16

Amino acid 17

Amino acid 18

Amino acid 19

Amino acid 20

Amino acid 21

Amino acid 22

Amino acid 23

Amino acid 24

Amino acid 25

Amino acid 26

Amino acid 27

Amino acid 28

Amino acid 29

Amino acid 30

Amino acid 31

Amino acid 32

Amino acid 33

Amino acid 34

Amino acid 35

Amino acid 36

Amino acid 37

Amino acid 38

Amino acid 39

Amino acid 40

Amino acid 41

Amino acid 42

Amino acid 43

Amino acid 44

Amino acid 45

Amino acid 46

Amino acid 47

Amino acid 48

Amino acid 49

Amino acid 50


Identify amino acids based on the monomer reference library

Number of chain(s) identified from the structure: 1

> Chain 1 :

Amino acid sequence : Lys--Pro--Thr--Tyr--Phe--Phe--Gly--Orn--Glu--Gly--Cys(1)--Val--Leu--Tyr--Leu--Ala--Glu--Val--Leu--His--Ser--Gly--Cys(2)--Leu--His--Gln--Asn--Val--Phe--Asn--Cys(1)--Tyr--Asn--Glu--Leu--Gln--Tyr--Leu--Ser--Cys(3)--Ile--Ser--Thr--Cys(2)--Cys(3)--Gln--Glu--Val--Ile--Gly

Amino acid mapping

Amino acid location

2024-01-15T08:33:03.561961 image/svg+xml Matplotlib v3.7.4, https://matplotlib.org/

Matched amino acid from monomer reference library

Amino acid 1: Lys

Amino acid 2: Pro

Amino acid 3: Thr

Amino acid 4: Tyr

Amino acid 5: Phe

Amino acid 6: Phe

Amino acid 7: Gly

Amino acid 8: Orn

Amino acid 9: Glu

Amino acid 10: Gly

Amino acid 11: Cys

Amino acid 12: Val

Amino acid 13: Leu

Amino acid 14: Tyr

Amino acid 15: Leu

Amino acid 16: Ala

Amino acid 17: Glu

Amino acid 18: Val

Amino acid 19: Leu

Amino acid 20: His

Amino acid 21: Ser

Amino acid 22: Gly

Amino acid 23: Cys

Amino acid 24: Leu

Amino acid 25: His

Amino acid 26: Gln

Amino acid 27: Asn

Amino acid 28: Val

Amino acid 29: Phe

Amino acid 30: Asn

Amino acid 31: Cys

Amino acid 32: Tyr

Amino acid 33: Asn

Amino acid 34: Glu

Amino acid 35: Leu

Amino acid 36: Gln

Amino acid 37: Tyr

Amino acid 38: Leu

Amino acid 39: Ser

Amino acid 40: Cys

Amino acid 41: Ile

Amino acid 42: Ser

Amino acid 43: Thr

Amino acid 44: Cys

Amino acid 45: Cys

Amino acid 46: Gln

Amino acid 47: Glu

Amino acid 48: Val

Amino acid 49: Ile

Amino acid 50: Gly