Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2540
Number of amino acids:13
Molecular Weight:1509.68 Da
Theoretical pI:4.77


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)00%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)00%
Glycine GLY (G)00%
Phynylalanine PHE (F)17.69%
Isoleucine ILE (I)00%
Histidine HIS (H)17.69%
Lysine LYS (K)00%
Methionine MET (M)00%
Leucine LEU (L)17.69%
Asparagine ASN (N)215.38%
Glutamine GLN (Q)00%
Proline PRO (P)323.08%
Serine SER (S)215.38%
Arginine ARG (R)00%
Threonine THR (T)17.69%
Tryptophan TRP (W)17.69%
Valine VAL (V)00%
Tyrosine TYR (Y)00%


Atomic Composition:


As there is at least one ambiguous position (B, J, X or Z) in the sequence considered, the atomic composition cannot be computed.


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

Ext. coefficient    5500
Absorption 0.1% (=1 g/l)    3.643
Aromaticity:0.154

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 61.84

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[23.08, 53.85, 7.69]

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:30
Grand average of hydropathicity (GRAVY):0.00