Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5832
Number of amino acids:356
Molecular Weight:37200.4 Da
Theoretical pI:7.51


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)3910.96%
Cysteine CYS (C)174.78%
Glutamic Acid GLU (E)61.69%
Aspartic Acid ASP (D)143.93%
Glycine GLY (G)267.3%
Phynylalanine PHE (F)92.53%
Isoleucine ILE (I)195.34%
Histidine HIS (H)30.84%
Lysine LYS (K)102.81%
Methionine MET (M)71.97%
Leucine LEU (L)3610.11%
Asparagine ASN (N)246.74%
Glutamine GLN (Q)133.65%
Proline PRO (P)195.34%
Serine SER (S)3610.11%
Arginine ARG (R)113.09%
Threonine THR (T)359.83%
Tryptophan TRP (W)20.56%
Valine VAL (V)205.62%
Tyrosine TYR (Y)102.81%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1612
HydrogenH2590
NitrogenN444
OxygenO515
SulphurS24

FormulaC1612H2590N444O515S24
Total Number of Atoms:5185


Total number of positively charged residues (ARG + LYS):21
Total number of negatively charged residues (ASP + GLU):20
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    26900
Absorption 0.1% (=1 g/l)    0.723,   assuming all pairs of CYS residues form cystines

Ext. coefficient    25900
Absorption 0.1% (=1 g/l)    0.696,   assuming all CYS residues are reduced
Aromaticity:0.059

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 35.32

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[26.97, 29.49, 24.72]

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:87.5002
Grand average of hydropathicity (GRAVY):0.14