Physicochemical Properties of Peptide



PPepDB ID:PPepDB_1487
Number of amino acids:26
Molecular Weight:2754.25 Da
Theoretical pI:8.49


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)311.54%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)13.85%
Aspartic Acid ASP (D)00%
Glycine GLY (G)415.38%
Phynylalanine PHE (F)13.85%
Isoleucine ILE (I)00%
Histidine HIS (H)13.85%
Lysine LYS (K)00%
Methionine MET (M)00%
Leucine LEU (L)00%
Asparagine ASN (N)27.69%
Glutamine GLN (Q)00%
Proline PRO (P)27.69%
Serine SER (S)13.85%
Arginine ARG (R)27.69%
Threonine THR (T)27.69%
Tryptophan TRP (W)13.85%
Valine VAL (V)415.38%
Tyrosine TYR (Y)13.85%


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):2
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    6990
Absorption 0.1% (=1 g/l)    2.538
Aromaticity:0.115

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 44.57

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[26.92, 34.62, 15.38]

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:56.1538
Grand average of hydropathicity (GRAVY):0.00