Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5605
Number of amino acids:232
Molecular Weight:26581.94 Da
Theoretical pI:8.62


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)146.03%
Cysteine CYS (C)31.29%
Glutamic Acid GLU (E)219.05%
Aspartic Acid ASP (D)114.74%
Glycine GLY (G)146.03%
Phynylalanine PHE (F)125.17%
Isoleucine ILE (I)125.17%
Histidine HIS (H)20.86%
Lysine LYS (K)2510.78%
Methionine MET (M)104.31%
Leucine LEU (L)239.91%
Asparagine ASN (N)135.6%
Glutamine GLN (Q)93.88%
Proline PRO (P)52.16%
Serine SER (S)135.6%
Arginine ARG (R)104.31%
Threonine THR (T)62.59%
Tryptophan TRP (W)41.72%
Valine VAL (V)208.62%
Tyrosine TYR (Y)52.16%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1192
HydrogenH1905
NitrogenN317
OxygenO343
SulphurS13

FormulaC1192H1905N317O343S13
Total Number of Atoms:3770


Total number of positively charged residues (ARG + LYS):35
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    29575
Absorption 0.1% (=1 g/l)    1.113,   assuming all pairs of CYS residues form cystines

Ext. coefficient    29450
Absorption 0.1% (=1 g/l)    1.108,   assuming all CYS residues are reduced
Aromaticity:0.091

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 29.22

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[32.76, 19.40, 29.31]

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:89.8707
Grand average of hydropathicity (GRAVY):-0.28