Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3362
Number of amino acids:26
Molecular Weight:2951.39 Da
Theoretical pI:6.21


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)00%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)27.69%
Aspartic Acid ASP (D)27.69%
Glycine GLY (G)311.54%
Phynylalanine PHE (F)27.69%
Isoleucine ILE (I)311.54%
Histidine HIS (H)00%
Lysine LYS (K)311.54%
Methionine MET (M)13.85%
Leucine LEU (L)00%
Asparagine ASN (N)27.69%
Glutamine GLN (Q)00%
Proline PRO (P)311.54%
Serine SER (S)13.85%
Arginine ARG (R)13.85%
Threonine THR (T)00%
Tryptophan TRP (W)00%
Valine VAL (V)27.69%
Tyrosine TYR (Y)13.85%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC134
HydrogenH208
NitrogenN34
OxygenO39
SulphurS1

FormulaC134H208N34O39S1
Total Number of Atoms:416


Total number of positively charged residues (ARG + LYS):4
Total number of negatively charged residues (ASP + GLU):4
Extinction Coefficient:This protein does not contain any Tryptophan residues. Experience shows that this could result in more than 10% error in the computed extinction coefficient.

Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    1490
Absorption 0.1% (=1 g/l)    0.505
Aromaticity:0.115

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 19.89

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[30.77, 34.62, 11.54]

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:67.3078
Grand average of hydropathicity (GRAVY):-0.61