Physicochemical Properties of Peptide



PPepDB ID:PPepDB_645
Number of amino acids:37
Molecular Weight:3974.87 Da
Theoretical pI:10.67


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)410.81%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)12.7%
Aspartic Acid ASP (D)12.7%
Glycine GLY (G)410.81%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)38.11%
Histidine HIS (H)00%
Lysine LYS (K)00%
Methionine MET (M)00%
Leucine LEU (L)12.7%
Asparagine ASN (N)38.11%
Glutamine GLN (Q)12.7%
Proline PRO (P)38.11%
Serine SER (S)12.7%
Arginine ARG (R)410.81%
Threonine THR (T)410.81%
Tryptophan TRP (W)12.7%
Valine VAL (V)38.11%
Tyrosine TYR (Y)12.7%


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):4
Total number of negatively charged residues (ASP + GLU):2
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)    1.759
Aromaticity:0.054

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 40.53

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[24.32, 29.73, 16.22]

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:76.4865
Grand average of hydropathicity (GRAVY):0.00