Physicochemical Properties of Peptide



PPepDB ID:PPepDB_6062
Number of amino acids:127
Molecular Weight:12070.81 Da
Theoretical pI:8.5


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)2418.9%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)21.57%
Glycine GLY (G)75.51%
Phynylalanine PHE (F)32.36%
Isoleucine ILE (I)32.36%
Histidine HIS (H)00%
Lysine LYS (K)10.79%
Methionine MET (M)10.79%
Leucine LEU (L)129.45%
Asparagine ASN (N)32.36%
Glutamine GLN (Q)21.57%
Proline PRO (P)2822.05%
Serine SER (S)1713.39%
Arginine ARG (R)21.57%
Threonine THR (T)1411.02%
Tryptophan TRP (W)00%
Valine VAL (V)86.3%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC543
HydrogenH875
NitrogenN139
OxygenO168
SulphurS1

FormulaC543H875N139O168S1
Total Number of Atoms:1726


Total number of positively charged residues (ARG + LYS):3
Total number of negatively charged residues (ASP + GLU):2
Extinction Coefficient:As there are no Tryptophan, Tyrosine or Cysteine in the region considered, your protein should not be visible by UV spectrophotometry.
Aromaticity:0.024

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 67.37

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[20.47, 43.31, 29.13]

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:83.2283
Grand average of hydropathicity (GRAVY):0.30