Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3096
Number of amino acids:29
Molecular Weight:3154.65 Da
Theoretical pI:6.26


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)310.34%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)26.9%
Aspartic Acid ASP (D)26.9%
Glycine GLY (G)13.45%
Phynylalanine PHE (F)13.45%
Isoleucine ILE (I)00%
Histidine HIS (H)00%
Lysine LYS (K)413.79%
Methionine MET (M)00%
Leucine LEU (L)517.24%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)13.45%
Serine SER (S)13.45%
Arginine ARG (R)00%
Threonine THR (T)620.69%
Tryptophan TRP (W)00%
Valine VAL (V)26.9%
Tyrosine TYR (Y)13.45%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC143
HydrogenH237
NitrogenN33
OxygenO46
SulphurS0

FormulaC143H237N33O46S0
Total Number of Atoms:459


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)    0.472
Aromaticity:0.069

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 22.80

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[31.03, 10.34, 34.48]

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:97.5863
Grand average of hydropathicity (GRAVY):-0.08