Physicochemical Properties of Peptide



PPepDB ID:PPepDB_6155
Number of amino acids:84
Molecular Weight:9325.75 Da
Theoretical pI:6.72


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)33.57%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)67.14%
Aspartic Acid ASP (D)67.14%
Glycine GLY (G)67.14%
Phynylalanine PHE (F)11.19%
Isoleucine ILE (I)55.95%
Histidine HIS (H)22.38%
Lysine LYS (K)89.52%
Methionine MET (M)22.38%
Leucine LEU (L)67.14%
Asparagine ASN (N)22.38%
Glutamine GLN (Q)44.76%
Proline PRO (P)44.76%
Serine SER (S)55.95%
Arginine ARG (R)44.76%
Threonine THR (T)55.95%
Tryptophan TRP (W)11.19%
Valine VAL (V)1315.48%
Tyrosine TYR (Y)11.19%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC412
HydrogenH681
NitrogenN115
OxygenO126
SulphurS2

FormulaC412H681N115O126S2
Total Number of Atoms:1336


Total number of positively charged residues (ARG + LYS):12
Total number of negatively charged residues (ASP + GLU):12
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    6990
Absorption 0.1% (=1 g/l)    0.750
Aromaticity:0.036

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 22.49

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[32.14, 20.24, 20.24]

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:99.5238
Grand average of hydropathicity (GRAVY):-0.30