ProForma 2.0
validated simple linear
KKLFKKILKFLNH
BP76
Aliases: BP76
Normalized sequence
KKLFKKILKFLNH
13 amino acids
Release PepDiana-V1-20260620
44
Activity records
1
Source papers
44
Positive
0
Negative / threshold
Versioned scientific descriptors
No separate physicochemical property was reported in the primary-literature identity record. PepDiana release values are shown as computed properties.
Molecular weight
1657.0967 Da
Molecular formula
C82H137N21O15
Theoretical pI
10.6025
Net charge at pH 7
4.8423
GRAVY
-0.3615
Instability index
-7.1077
Aromaticity
0.1538
Topological polar surface area
614.39 Ų
cLogP
-0.6281
Hydrogen-bond donors
21
Hydrogen-bond acceptors
21
Rotatable bonds
61
Method: PepDiana sequence/structure descriptor pipeline
Tool: Biopython+RDKit · Biopython 1.85; RDKit 2024.09.6
Calculated: 2026-06-20T11:01:38.358971+00:00
Assumptions: ph=7; termini=free N-terminus and free C-terminus for simple linear peptides; stereochemistry=standard L-amino acids; smiles_length_limit=200
ProForma 2.0
validated simple linear
KKLFKKILKFLNH
HELM 2.0
validated simple linear
PEPTIDE1{K.K.L.F.K.K.I.L.K.F.L.N.H}$$$$V2.0
Canonical SMILES
validated
CCC(C)C(NC(=O)C(CCCCN)NC(=O)C(CCCCN)NC(=O)C(Cc1ccccc1)NC(=O)C(CC(C)C)NC(=O)C(CCCCN)NC(=O)C(N)CCCCN)C(=O)NC(CC(C)C)C(=O)NC(CCCCN)C(=O)NC(Cc1ccccc1)C(=O)NC(CC(C)C)C(=O)NC(CC(N)=O)C(=O)NC(Cc1c[nH]cn1)C(=O)O
Isomeric SMILES
validated
CC[C@H](C)[C@H](NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCCCN)NC(=O)[C@H](Cc1ccccc1)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCCCN)NC(=O)[C@@H](N)CCCCN)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](Cc1ccccc1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](Cc1c[nH]cn1)C(=O)O
Paper-level observations
Table 3: BP76 MIC 25 µg/ml against S. aureus ATCC 29213
Table 3: BP76 MBC 25 µg/ml against S. aureus ATCC 29213
Table 3: BP76 MIC 50 µg/ml against S. aureus MRSA USA 300
Table 3: BP76 MBC 50 µg/ml against S. aureus MRSA USA 300
Table 3: BP76 MIC 50 µg/ml against P. aeruginosa ATCC 27853
Table 3: BP76 MBC 50 µg/ml against P. aeruginosa ATCC 27853
Table 3: BP76 MIC 50 µg/ml against P. aeruginosa ST175-1
Table 3: BP76 MBC 50 µg/ml against P. aeruginosa ST175-1
Table 3: BP76 MIC 6.25 µg/ml against A. baumannii ATCC 19606
Table 3: BP76 MBC 6.25 µg/ml against A. baumannii ATCC 19606
Table 3: BP76 MIC 25 µg/ml against A. baumannii IB010
Table 3: BP76 MBC 25 µg/ml against A. baumannii IB010
Table 3: BP76 MIC 12.5 µg/ml against A. baumannii Ab-1
Table 3: BP76 MBC 12.5 µg/ml against A. baumannii Ab-1
Table 3: BP76 MIC 12.5 µg/ml against K. pneumoniae ATCC 43816
Table 3: BP76 MBC 12.5 µg/ml against K. pneumoniae ATCC 43816
Table 3: BP76 MIC 6.25 µg/ml against K. pneumoniae CG258
Table 3: BP76 MBC 6.25 µg/ml against K. pneumoniae CG258
Table 3: BP76 MIC 6.25 µg/ml against E. coli ATCC 25922
Table 3: BP76 MBC 6.25 µg/ml against E. coli ATCC 25922
Table 3: BP76 MIC 12.5 µg/ml against E. coli ESBL 1057.1
Table 3: BP76 MBC 12.5 µg/ml against E. coli ESBL 1057.1
Section 3.4: BP76 reduced SBF indices compared to BP607 for K. pneumoniae ATCC 43816 (Fig. 3)
Section 3.4: BP76 reduced production of biofilm for K. pneumoniae CG258 (Fig. 3)
Section 3.4: BP76 reduced production of biofilm for E. coli ATCC 25922 (Fig. 3)
Section 3.3: BP76 was able to reduce growth to bactericidal level at 6h, but not at 24h against K. pneumoniae CG258 at 2x MIC
Section 3.3: at 2x MIC, all three peptides bactericidal for A. baumannii ATCC 19606 at 6 and 24h
Section 3.3: at 2x MIC, all three peptides bactericidal for E. coli ESBL 1057.1 at 6 and 24h
Section 3.3: all three peptides were bactericidal for E. coli ESBL 1057.1 at 6 and 24h at MIC
Section 3.3: BP76 displayed bactericidal activity at 6h but not at 24h against K. pneumoniae CG258 at MIC
Section 3.3: none of the peptides were bactericidal for A. baumannii ATCC 19606 at 6h or 24h at MIC
Section 3.1: BP76 inhibited growth of all strains by ≈90% at 50 µg/ml
Abstract: BP76 inhibited ≥76.77% of K. pneumoniae biofilm formation at subinhibitory concentrations
Abstract: BP76 inhibited ≥76.77% of E. coli biofilm formation at subinhibitory concentrations
Section 3.1: BP125 inhibited ≥83% of growth in all strains except for both K. pneumoniae and E. coli ATCC 25922
Section 3.1: 13 peptides reduced growth of all A. baumannii strains at least 83%
Section 3.1: 11 peptides reduced growth at least 80% in E. coli strains
Section 3.1: eight compounds were able to reduce over 92% of growth in K. pneumoniae strains
Section 3.1: five out of 26 compounds reduced at least 88% of growth in P. aeruginosa strains
Section 3.1: five peptides able to inhibit growth ≥83% in S. aureus
Section 3.1: BP475, BP181, BP179, BP241 and BP171 mainly reduced growth of A. baumannii, K. pneumoniae and E. coli strains with values ranging between 74% and 95%
Section 3.5: BP76 showed 15% peptide remaining after 60 min in human serum
Table 1: BP76 hemolysis 34±2.1% at 150 µM
Section 3.6: BP76 presented less toxicity than colistin with 100% survival after 24h (Fig. 5B)
Citation and release provenance
Cite this identity as PepDiana record PEPDIA-PLP-001503, release PepDiana-V1-20260620. Experimental observations retain their paper, mention, and activity-record identifiers.
Record updated: 2026-06-22T07:14:26.229247+00:00