Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5492
Number of amino acids:361
Molecular Weight:39819.14 Da
Theoretical pI:7.19


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)215.82%
Cysteine CYS (C)123.32%
Glutamic Acid GLU (E)215.82%
Aspartic Acid ASP (D)195.26%
Glycine GLY (G)349.42%
Phynylalanine PHE (F)184.99%
Isoleucine ILE (I)154.16%
Histidine HIS (H)92.49%
Lysine LYS (K)236.37%
Methionine MET (M)61.66%
Leucine LEU (L)298.03%
Asparagine ASN (N)154.16%
Glutamine GLN (Q)113.05%
Proline PRO (P)123.32%
Serine SER (S)359.7%
Arginine ARG (R)174.71%
Threonine THR (T)174.71%
Tryptophan TRP (W)51.39%
Valine VAL (V)298.03%
Tyrosine TYR (Y)133.6%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1763
HydrogenH2738
NitrogenN484
OxygenO533
SulphurS18

FormulaC1763H2738N484O533S18
Total Number of Atoms:5536


Total number of positively charged residues (ARG + LYS):40
Total number of negatively charged residues (ASP + GLU):40
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    47620
Absorption 0.1% (=1 g/l)    1.196,   assuming all pairs of CYS residues form cystines

Ext. coefficient    46870
Absorption 0.1% (=1 g/l)    1.177,   assuming all CYS residues are reduced
Aromaticity:0.100

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 37.35

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[30.19, 26.59, 21.33]

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:76.6482
Grand average of hydropathicity (GRAVY):-0.25