Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2095
Number of amino acids:35
Molecular Weight:3863.49 Da
Theoretical pI:5.05


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)00%
Cysteine CYS (C)12.86%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)12.86%
Glycine GLY (G)38.57%
Phynylalanine PHE (F)12.86%
Isoleucine ILE (I)25.71%
Histidine HIS (H)12.86%
Lysine LYS (K)00%
Methionine MET (M)00%
Leucine LEU (L)514.29%
Asparagine ASN (N)411.43%
Glutamine GLN (Q)00%
Proline PRO (P)514.29%
Serine SER (S)00%
Arginine ARG (R)00%
Threonine THR (T)514.29%
Tryptophan TRP (W)25.71%
Valine VAL (V)411.43%
Tyrosine TYR (Y)12.86%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC182
HydrogenH273
NitrogenN43
OxygenO48
SulphurS1

FormulaC182H273N43O48S1
Total Number of Atoms:547


Total number of positively charged residues (ARG + LYS):0
Total number of negatively charged residues (ASP + GLU):1
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    12490
Absorption 0.1% (=1 g/l)    3.233,   assuming all pairs of CYS residues form cystines

Ext. coefficient    12490
Absorption 0.1% (=1 g/l)    3.233,   assuming all CYS residues are reduced
Aromaticity:0.114

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 39.92

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[42.86, 34.29, 14.29]

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:111.143
Grand average of hydropathicity (GRAVY):0.39