Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2639
Number of amino acids:12
Molecular Weight:1404.62 Da
Theoretical pI:6.49


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)00%
Cysteine CYS (C)18.33%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)18.33%
Glycine GLY (G)18.33%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)18.33%
Histidine HIS (H)18.33%
Lysine LYS (K)18.33%
Methionine MET (M)18.33%
Leucine LEU (L)18.33%
Asparagine ASN (N)00%
Glutamine GLN (Q)18.33%
Proline PRO (P)00%
Serine SER (S)216.67%
Arginine ARG (R)00%
Threonine THR (T)00%
Tryptophan TRP (W)18.33%
Valine VAL (V)00%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC60
HydrogenH93
NitrogenN17
OxygenO18
SulphurS2

FormulaC60H93N17O18S2
Total Number of Atoms:190


Total number of positively charged residues (ARG + LYS):1
Total number of negatively charged residues (ASP + GLU):1
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    5500
Absorption 0.1% (=1 g/l)    3.916,   assuming all pairs of CYS residues form cystines

Ext. coefficient    5500
Absorption 0.1% (=1 g/l)    3.916,   assuming all CYS residues are reduced
Aromaticity:0.083

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 30.54

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[25.00, 25.00, 16.67]

Amino acids in helix: V, I, Y, F, W, L || Amino acids in turn: N, P, G, S || Amino acids in sheet: E, M, A, L
Aliphatic index:65
Grand average of hydropathicity (GRAVY):-0.36