Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5452
Number of amino acids:275
Molecular Weight:29452.81 Da
Theoretical pI:4.81


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)248.73%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)93.27%
Aspartic Acid ASP (D)165.82%
Glycine GLY (G)155.45%
Phynylalanine PHE (F)155.45%
Isoleucine ILE (I)165.82%
Histidine HIS (H)31.09%
Lysine LYS (K)93.27%
Methionine MET (M)10.36%
Leucine LEU (L)269.45%
Asparagine ASN (N)145.09%
Glutamine GLN (Q)62.18%
Proline PRO (P)103.64%
Serine SER (S)4616.73%
Arginine ARG (R)82.91%
Threonine THR (T)238.36%
Tryptophan TRP (W)41.45%
Valine VAL (V)217.64%
Tyrosine TYR (Y)93.27%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1319
HydrogenH2044
NitrogenN338
OxygenO424
SulphurS1

FormulaC1319H2044N338O424S1
Total Number of Atoms:4126


Total number of positively charged residues (ARG + LYS):17
Total number of negatively charged residues (ASP + GLU):25
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    35410
Absorption 0.1% (=1 g/l)    1.202
Aromaticity:0.102

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 37.34

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[33.09, 30.91, 21.82]

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:90.4364
Grand average of hydropathicity (GRAVY):0.06