Physicochemical Properties of Peptide



PPepDB ID:PPepDB_6058
Number of amino acids:113
Molecular Weight:12848.9 Da
Theoretical pI:9.84


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)54.42%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)76.19%
Aspartic Acid ASP (D)21.77%
Glycine GLY (G)10.88%
Phynylalanine PHE (F)54.42%
Isoleucine ILE (I)32.65%
Histidine HIS (H)108.85%
Lysine LYS (K)1412.39%
Methionine MET (M)10.88%
Leucine LEU (L)54.42%
Asparagine ASN (N)54.42%
Glutamine GLN (Q)32.65%
Proline PRO (P)2925.66%
Serine SER (S)65.31%
Arginine ARG (R)32.65%
Threonine THR (T)21.77%
Tryptophan TRP (W)00%
Valine VAL (V)97.96%
Tyrosine TYR (Y)32.65%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC598
HydrogenH914
NitrogenN164
OxygenO151
SulphurS1

FormulaC598H914N164O151S1
Total Number of Atoms:1828


Total number of positively charged residues (ARG + LYS):17
Total number of negatively charged residues (ASP + GLU):9
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    4470
Absorption 0.1% (=1 g/l)    0.348
Aromaticity:0.071

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 91.33

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[22.12, 36.28, 15.93]

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:55.1328
Grand average of hydropathicity (GRAVY):-1.07