Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2064
Number of amino acids:35
Molecular Weight:3743.24 Da
Theoretical pI:5.95


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)25.71%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)00%
Glycine GLY (G)25.71%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)12.86%
Histidine HIS (H)00%
Lysine LYS (K)00%
Methionine MET (M)38.57%
Leucine LEU (L)00%
Asparagine ASN (N)38.57%
Glutamine GLN (Q)514.29%
Proline PRO (P)1337.14%
Serine SER (S)12.86%
Arginine ARG (R)00%
Threonine THR (T)38.57%
Tryptophan TRP (W)00%
Valine VAL (V)00%
Tyrosine TYR (Y)25.71%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC166
HydrogenH249
NitrogenN43
OxygenO50
SulphurS3

FormulaC166H249N43O50S3
Total Number of Atoms:511


Total number of positively charged residues (ARG + LYS):0
Total number of negatively charged residues (ASP + GLU):0
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    2980
Absorption 0.1% (=1 g/l)    0.796
Aromaticity:0.057

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 49.53

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[8.57, 54.29, 14.29]

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:16.8571
Grand average of hydropathicity (GRAVY):-1.18