Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5369
Number of amino acids:290
Molecular Weight:32096.61 Da
Theoretical pI:5.31


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)2910%
Cysteine CYS (C)41.38%
Glutamic Acid GLU (E)113.79%
Aspartic Acid ASP (D)217.24%
Glycine GLY (G)289.66%
Phynylalanine PHE (F)155.17%
Isoleucine ILE (I)82.76%
Histidine HIS (H)82.76%
Lysine LYS (K)134.48%
Methionine MET (M)62.07%
Leucine LEU (L)155.17%
Asparagine ASN (N)144.83%
Glutamine GLN (Q)82.76%
Proline PRO (P)113.79%
Serine SER (S)258.62%
Arginine ARG (R)103.45%
Threonine THR (T)155.17%
Tryptophan TRP (W)124.14%
Valine VAL (V)227.59%
Tyrosine TYR (Y)155.17%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1446
HydrogenH2115
NitrogenN383
OxygenO432
SulphurS10

FormulaC1446H2115N383O432S10
Total Number of Atoms:4386


Total number of positively charged residues (ARG + LYS):23
Total number of negatively charged residues (ASP + GLU):32
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    88600
Absorption 0.1% (=1 g/l)    2.760,   assuming all pairs of CYS residues form cystines

Ext. coefficient    88350
Absorption 0.1% (=1 g/l)    2.753,   assuming all CYS residues are reduced
Aromaticity:0.145

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 29.49

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[30.00, 26.90, 21.03]

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:62.931
Grand average of hydropathicity (GRAVY):-0.34