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Details of SAPdb entry with Sequence LL
Primary information
SAPdb ID 1442,
PMID24085660
Peptide NameFmoc-LL
Peptide sequenceLL
N-Terminal ModificationFmoc(fluorenylmethoxycarbonyl)
C-Terminal ModificationFree
Non-Terminal ModificationNone
Length2
Peptide/ConjuagatePeptide
TechniqueTEM (Transmission Electron Microscopy) and WAXS(Wide Angle X - Ray scattering)
SolventWater + 0.1M Hcl + 0.5 M NaOH
MethodFmoc-dipeptide was suspended in water. Sodium hydroxide (0.5 M) was gradually added to the aqueous suspensions of Fmoc-dipeptide until pH 10.5 was reached. The samples were vortexed and sonicated for one minute to fully dissolve the peptide amphiphiles. To obtain required pH, a required volume of dilute hydrochloric acid (0.085 M) was then added dropwise to the solution. Solution sonicated and vortexed. Next, the samples were heated to 75–80 ◦C until fully dissolved and homogenised. The samples were subsequently cooled and maintained at 4 ◦C for ∼ 12 hours (overnight) to promote gelation.
Conc10mmol/L
TemperaturepH 8 - 10.5
Temperature4 °C
Incubation Time~ 12 hours
Year2013
Self assemblyNo
Type of Self assemblyNo hydogel formation
Tertiary Structure
(Technique)		Not Predicted),
Linear
NA
NA
None
NA
LL
N.A.
Primary information
SAPdb ID 1443,
PMID24085660
Peptide NameFmoc-LL
Peptide sequenceLL
N-Terminal ModificationFmoc(fluorenylmethoxycarbonyl)
C-Terminal ModificationFree
Non-Terminal ModificationNone
Length2
Peptide/ConjuagatePeptide
TechniqueTEM (Transmission Electron Microscopy) and WAXS(Wide Angle X - Ray scattering)
SolventWater + 0.1M Hcl + 0.5 M NaOH
MethodFmoc-dipeptide was suspended in water. Sodium hydroxide (0.5 M) was gradually added to the aqueous suspensions of Fmoc-dipeptide until pH 10.5 was reached. The samples were vortexed and sonicated for one minute to fully dissolve the peptide amphiphiles. To obtain required pH, a required volume of dilute hydrochloric acid (0.085 M) was then added dropwise to the solution. Solution sonicated and vortexed. Next, the samples were heated to 75–80 ◦C until fully dissolved and homogenised. The samples were subsequently cooled and maintained at 4 ◦C for ∼ 12 hours (overnight) to promote gelation.
Conc10mmol/L
TemperaturepH 4.3 - 6.8
Temperature4 °C
Incubation Time~ 12 hours
Year2013
Self assemblyYes
Type of Self assemblyNanofibers
Tertiary Structure
(Technique)		Not Predicted),
Linear
NA
NA
Nanofibers
NA
LL
N.A.
Primary information
SAPdb ID 1478,
PMID22651803
Peptide NameDipeptide6
Peptide sequenceLL
N-Terminal ModificationNapthalene
C-Terminal ModificationFree
Non-Terminal ModificationNone
Length2
Peptide/ConjuagatePeptide
TechniqueSEM (Scanning Electron Microscopy) and X - Ray Diffraction
SolventWater + 0.1 M NaOH
Method25mg of dipeptide was suspended in deionized 5ml water . An equimolar amount of NaOH (0.1 M,aq) was added, and the solution was gently stirred until a clear solution was formed. Glucono-δ- lactone (GdL) was added to the solution and the samples were gently swirled to dissolve the GdL before being left to stand for 24 h without stirring to form gel.
Conc5mg/ml or 0.5%wt
TemperatureRoom temperature
Incubation Time24 hours
Year2012
Self assemblyYes
Type of Self assemblyTurbid gel
Tertiary Structure
(Technique)		Not Predicted),
Linear
NA
NA
Hydrogel
NA
LL
N.A.
Primary information
SAPdb ID 1607,
PMID21085503
Peptide Name(S,S)-bis(LeuLeu) or 1a
Peptide sequenceLL
N-Terminal ModificationFree
C-Terminal ModificationFree
Non-Terminal ModificationNone
Length2
Peptide/ConjuagatePeptide
Conjugate partnerNone
TechniqueTEM (Transmission Electron Microscopy)
SolventWater/DMSO
Method10 mg peptide placed in a test tube, and the solvent was added by microsyringe in 100-500 µL portions. After each addition the mixture was gently heated until the substance dissolved, and was then allowed to cool spontaneously to room temperature and formation of gel. checked by test tube inversion.
TemperatureRoom temperature
Year2010
Self assemblyYes
Type of Self assemblyStraight fibers
Tertiary Structure
(Technique)		Not Predicted),
Linear
NA
NA
Nanofibers
70
LL
N[C@@H](CC(C)C)C(=O)N[C@@H](CC(C)C)C=O
Primary information
SAPdb ID 1608,
PMID21085503
Peptide Name(S,R)-bis(LeuLeu) or 1a
Peptide sequenceLL
N-Terminal ModificationFree
C-Terminal ModificationFree
Non-Terminal ModificationNone
Length2
Peptide/ConjuagatePeptide
Conjugate partnerNone
TechniqueTEM (Transmission Electron Microscopy)
SolventWater/DMSO
Method10 mg peptide placed in a test tube, and the solvent was added by microsyringe in 100-500 µL portions. After each addition the mixture was gently heated until the substance dissolved, and was then allowed to cool spontaneously to room temperature and formation of gel. checked by test tube inversion.
TemperatureRoom temperature
Incubation TimeYes
Year2010
Self assemblyYes
Type of Self assemblyFibers
Tertiary Structure
(Technique)		Not Predicted),
Linear
NA
NA
Nanofibers
30
LL
N[C@@H](CC(C)C)C(=O)N[C@@H](CC(C)C)C=O
Primary information
SAPdb ID 1609,
PMID21085503
Peptide Name(S,R)-bis(LeuLeu) or 1a
Peptide sequenceLL
N-Terminal ModificationFree
C-Terminal ModificationMethyaltion
Non-Terminal ModificationNone
Length2
Peptide/ConjuagatePeptide
Conjugate partnerNone
TechniqueTEM (Transmission Electron Microscopy)
SolventToluene
Method10 mg peptide placed in a test tube, and the solvent was added by microsyringe in 100-500 µL portions. After each addition the mixture was gently heated until the substance dissolved, and was then allowed to cool spontaneously to room temperature and formation of gel. checked by test tube inversion.
TemperatureRoom temperature
Incubation TimeYes
Year2010
Self assemblyYes
Type of Self assemblyTapes
Tertiary Structure
(Technique)		Not Predicted),
Linear
NA
Stable
Nanotape
NA
LL
N(C)[C@@H](CC(C)C)C(=O)N[C@@H](CC(C)C)C=O
Primary information
SAPdb ID 1636,
PMID24895323
Peptide NameDileucine
Peptide sequenceLL
N-Terminal ModificationFree
C-Terminal ModificationFree
Non-Terminal ModificationNone
Length2
Peptide/ConjuagatePeptide
Conjugate partnerNone
TechniqueESEM (Environmental Scanning Electron Microscope)
SolventHFP (1,1,1,3,3,3-hexafluoro-2-propanol)
MethodFF-peptide nanotubes (PNT) were prepared by dissolving the L-diphenylalanine peptide in 1,1,1,3,3,3-hexafluoro-2-propanol an initial concentration of 100mg/ml further diluted in deionized water. Drops of the above solutions at a final concentrationof 2mg/ml were placed onto clean silicon substrates and dried at room temperature.The thermally induced LL PNT samples were heated in an oven for 90min at 180 °C.
Conc2mg/ml
TemperatureRoom temperature
Incubation Time90 minutes
Year2014
Self assemblyYes
Type of Self assemblyNanotubes
Tertiary Structure
(Technique)		Not Predicted),
Linear
NA
NA
Nanotube
NA
LL
N[C@@H](CC(C)C)C(=O)N[C@@H](CC(C)C)C=O
Primary information
SAPdb ID 1637,
PMID24895323
Peptide NameDileucine
Peptide sequenceLL
N-Terminal ModificationFree
C-Terminal ModificationFree
Non-Terminal ModificationNone
Length2
Peptide/ConjuagatePeptide
Conjugate partnerNone
TechniqueESEM (Environmental Scanning Electron Microscope)
SolventHFP (1,1,1,3,3,3-hexafluoro-2-propanol)
MethodFF-peptide nanotubes (PNT) were prepared by dissolving the L-diphenylalanine peptide in 1,1,1,3,3,3-hexafluoro-2-propanol an initial concentration of 100mg/ml further diluted in deionized water. Drops of the above solutions at a final concentrationof 2mg/ml were placed onto clean silicon substrates and dried at room temperature.The thermally induced LL PNT samples were heated in an oven for 90min at 180 °C.
Conc2mg/ml
Temperature180 °C
Incubation Time> 90 minutes
Year2014
Self assemblyYes
Type of Self assemblyNeedle like wire -Nanofibril structure
Tertiary Structure
(Technique)		Not Predicted),
Linear
Temperature induced
NA
Nanofibers, Nanowire
NA
LL
N[C@@H](CC(C)C)C(=O)N[C@@H](CC(C)C)C=O