Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5785
Number of amino acids:110
Molecular Weight:12507.54 Da
Theoretical pI:9.89


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)43.64%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)76.36%
Aspartic Acid ASP (D)00%
Glycine GLY (G)32.73%
Phynylalanine PHE (F)43.64%
Isoleucine ILE (I)21.82%
Histidine HIS (H)1110%
Lysine LYS (K)1311.82%
Methionine MET (M)10.91%
Leucine LEU (L)98.18%
Asparagine ASN (N)43.64%
Glutamine GLN (Q)65.45%
Proline PRO (P)2421.82%
Serine SER (S)54.55%
Arginine ARG (R)21.82%
Threonine THR (T)43.64%
Tryptophan TRP (W)00%
Valine VAL (V)87.27%
Tyrosine TYR (Y)32.73%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC580
HydrogenH895
NitrogenN161
OxygenO147
SulphurS1

FormulaC580H895N161O147S1
Total Number of Atoms:1784


Total number of positively charged residues (ARG + LYS):15
Total number of negatively charged residues (ASP + GLU):7
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    4470
Absorption 0.1% (=1 g/l)    0.357
Aromaticity:0.064

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 72.70

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[23.64, 32.73, 19.09]

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:63.7273
Grand average of hydropathicity (GRAVY):-0.98