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Primary-literature peptidehigh evidence

PEPDIA-PLP-001503

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

Physicochemical properties and standard representations

calculated sequence and structure

Reported properties

No separate physicochemical property was reported in the primary-literature identity record. PepDiana release values are shown as computed properties.

Computed properties

physchem-20260620

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

Sequence representations

representations-20260620

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

Experimental evidence grouped by activity

Antimicrobial 42 records

PMC11904594

42 observations
AntimicrobialAnti-BiofilmPositive observation
Record detail

Section 3.4: BP76 reduced SBF indices compared to BP607 for K. pneumoniae ATCC 43816 (Fig. 3)

Measure
biofilm_inhibition
Value
weak to moderate biofilm producer; reduced SBF indices compared to BP607
Target
Klebsiella pneumoniae
Assay
Not reported by source
Source publication
AntimicrobialAnti-BiofilmPositive observation
Record detail

Section 3.4: BP76 reduced production of biofilm for K. pneumoniae CG258 (Fig. 3)

Measure
biofilm_inhibition
Value
weak to moderate biofilm producer; reduced SBF indices compared to BP607
Target
Klebsiella pneumoniae
Assay
Not reported by source
Source publication
AntimicrobialAnti-BiofilmPositive observation
Record detail

Section 3.4: BP76 reduced production of biofilm for E. coli ATCC 25922 (Fig. 3)

Measure
biofilm_inhibition
Value
weak to moderate biofilm producer; reduced SBF indices compared to BP607
Target
Escherichia coli
Assay
Not reported by source
Source publication
AntimicrobialAntibacterialPositive observation
Record detail

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

Measure
time_kill
Value
bactericidal at 2x MIC at 6h, not at 24h
Target
Klebsiella pneumoniae
Assay
Not reported by source
Source publication
AntimicrobialAntibacterialPositive observation
Record detail

Section 3.3: at 2x MIC, all three peptides bactericidal for A. baumannii ATCC 19606 at 6 and 24h

Measure
time_kill
Value
bactericidal at 2x MIC at 6h and 24h
Target
Acinetobacter baumannii
Assay
Not reported by source
Source publication
AntimicrobialAntibacterialPositive observation
Record detail

Section 3.3: at 2x MIC, all three peptides bactericidal for E. coli ESBL 1057.1 at 6 and 24h

Measure
time_kill
Value
bactericidal at 2x MIC at 6h and 24h
Target
Escherichia coli
Assay
Not reported by source
Source publication
AntimicrobialAntibacterialPositive observation
Record detail

Section 3.3: all three peptides were bactericidal for E. coli ESBL 1057.1 at 6 and 24h at MIC

Measure
time_kill
Value
bactericidal at MIC at 6h and 24h
Target
Escherichia coli
Assay
Not reported by source
Source publication
AntimicrobialAntibacterialPositive observation
Record detail

Section 3.3: BP76 displayed bactericidal activity at 6h but not at 24h against K. pneumoniae CG258 at MIC

Measure
time_kill
Value
bactericidal at MIC at 6h, not at 24h
Target
Klebsiella pneumoniae
Assay
Not reported by source
Source publication
AntimicrobialAntibacterialPositive observation
Record detail

Section 3.3: none of the peptides were bactericidal for A. baumannii ATCC 19606 at 6h or 24h at MIC

Measure
time_kill
Value
not bactericidal at MIC at 6h or 24h
Target
Acinetobacter baumannii
Assay
Not reported by source
Source publication
AntimicrobialAntibacterialPositive observation
Record detail

Abstract: BP76 inhibited ≥76.77% of K. pneumoniae biofilm formation at subinhibitory concentrations

Measure
percent_inhibition
Value
≥76.77%
Target
Klebsiella pneumoniae
Assay
Not reported by source
Source publication
AntimicrobialAntibacterialPositive observation
Record detail

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%

Measure
percent_inhibition
Value
74-95%
Target
Acinetobacter baumannii
Assay
Not reported by source
Source publication
Toxicity 2 records

PMC11904594

2 observations

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