Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5333
Number of amino acids:214
Molecular Weight:24229.53 Da
Theoretical pI:7.76


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)167.48%
Cysteine CYS (C)83.74%
Glutamic Acid GLU (E)177.94%
Aspartic Acid ASP (D)73.27%
Glycine GLY (G)146.54%
Phynylalanine PHE (F)104.67%
Isoleucine ILE (I)115.14%
Histidine HIS (H)31.4%
Lysine LYS (K)115.14%
Methionine MET (M)52.34%
Leucine LEU (L)188.41%
Asparagine ASN (N)73.27%
Glutamine GLN (Q)146.54%
Proline PRO (P)94.21%
Serine SER (S)219.81%
Arginine ARG (R)146.54%
Threonine THR (T)104.67%
Tryptophan TRP (W)62.8%
Valine VAL (V)83.74%
Tyrosine TYR (Y)52.34%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1067
HydrogenH1662
NitrogenN300
OxygenO320
SulphurS13

FormulaC1067H1662N300O320S13
Total Number of Atoms:3362


Total number of positively charged residues (ARG + LYS):25
Total number of negatively charged residues (ASP + GLU):24
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    40950
Absorption 0.1% (=1 g/l)    1.690,   assuming all pairs of CYS residues form cystines

Ext. coefficient    40450
Absorption 0.1% (=1 g/l)    1.669,   assuming all CYS residues are reduced
Aromaticity:0.098

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 47.39

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[27.10, 23.83, 26.17]

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:71.1682
Grand average of hydropathicity (GRAVY):-0.42