Physicochemical Properties of Peptide



PPepDB ID:PPepDB_2541
Number of amino acids:14
Molecular Weight:1665.87 Da
Theoretical pI:8.99


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)17.14%
Isoleucine ILE (I)00%
Histidine HIS (H)17.14%
Lysine LYS (K)00%
Methionine MET (M)00%
Leucine LEU (L)17.14%
Asparagine ASN (N)214.29%
Glutamine GLN (Q)00%
Proline PRO (P)321.43%
Serine SER (S)214.29%
Arginine ARG (R)17.14%
Threonine THR (T)17.14%
Tryptophan TRP (W)17.14%
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):1
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)    3.302
Aromaticity:0.143

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 52.05

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[21.43, 50.00, 7.14]

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:27.8572
Grand average of hydropathicity (GRAVY):0.00