Physicochemical Properties of Peptide



PPepDB ID:PPepDB_521
Number of amino acids:7
Molecular Weight:835.87 Da
Theoretical pI:5.84


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)114.29%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)114.29%
Glycine GLY (G)00%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)00%
Histidine HIS (H)00%
Lysine LYS (K)00%
Methionine MET (M)00%
Leucine LEU (L)00%
Asparagine ASN (N)114.29%
Glutamine GLN (Q)00%
Proline PRO (P)114.29%
Serine SER (S)00%
Arginine ARG (R)114.29%
Threonine THR (T)114.29%
Tryptophan TRP (W)00%
Valine VAL (V)00%
Tyrosine TYR (Y)114.29%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC35
HydrogenH53
NitrogenN11
OxygenO13
SulphurS0

FormulaC35H53N11O13S0
Total Number of Atoms:112


Total number of positively charged residues (ARG + LYS):1
Total number of negatively charged residues (ASP + GLU):1
Extinction Coefficient:This protein does not contain any Tryptophan residues. Experience shows that this could result in more than 10% error in the computed extinction coefficient.

Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    1490
Absorption 0.1% (=1 g/l)    1.783
Aromaticity:0.143

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 23.96

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[14.29, 28.57, 14.29]

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:14.2857
Grand average of hydropathicity (GRAVY):-1.90