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Details of TopicalPdb ID 1127

PRIMARY INFORMATION
ID1127
PMID18601987
Year2009
SequenceGIGKFLHSAKKFGKA
FVGEIMNS
NameMagainin
Length23
N-Terminal ModificationFree
C-Terminal ModificationFree
Linear/ CyclicLinear
ChiralityL
Chemical ModificationNone
Origin of PeptideSkin of African clawed frogs
Nature of Peptide/CargoAntimicrobial
MechanismMagainins can then self-assemble into transmembrane pores that make the cell membrane leaky and can also lead to cell lysis preferentially in bacterial Cells
Cargo Sequence/StructureNot mentioned
Name of cargo
Fluorescein
AssayFranz diffusion cell
EnhancerPBS (pH from 7.4 to 11) or 1 wt% granisetron hydrochloride solution in PBS (pH from 5 to 10)
Properties of enhancerChanging pH can alter the structure and properties of antimicrobial peptide
Concentration1 mM
Incubation time12 hours
Tissue permeability (value with units)The results suggest that positively charged magainin facilitated transdermal transport of negatively charged fluorescein due to electrostatic attraction at pH 7.4 and results in 35 fold increase in the permeation of maganine by the NLS control formulation (i.e., from an average of 0.037μg to 1.302 μg of fluorescein), but as the attraction decreased with increasing pH, the skin permeability enhancement decreased as well
Tissue SampleHuman cadaver skin
Ex vivo/In vivo/In vitroin vitro
SECONDARY INFORMATION
STRUCTURE
Predicted Structure
SMILESNCC(=O)N[C@@H]([C@@H](C)CC)C(=O)
NCC(=O)N[C@@H](CCCC[NH3])C(=O)N[C@@H]
(Cc1ccccc1)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](Cc1nc[nH]c1)
C(=O)N[C@@H](CO)C(=O)N[C@H](O)N[C@@H](CCCC[NH3])
C(=O)N[C@@H](CCCC[NH3])C(=O)N[C@@H]
(Cc1ccccc1)C(=O)NCC(=O)N[C@@H](CCCC[NH3])
C(=O)N[C@@H](C)C(=O)N[C@@H](CC)C(=O)N[C@@H](C(C)C)C
(=O)NCC(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H]([C@@H]
(C)CC)C(=O)N[C@@H](CCSC)C(=O)N[C@@H]
(CC(=O)N)C(=O)N[C@@H](CO)C=O.CC.C.C.C.C.C