Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4474
Number of amino acids:265
Molecular Weight:28530.41 Da
Theoretical pI:5.89


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)176.42%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)62.26%
Aspartic Acid ASP (D)103.77%
Glycine GLY (G)145.28%
Phynylalanine PHE (F)155.66%
Isoleucine ILE (I)228.3%
Histidine HIS (H)31.13%
Lysine LYS (K)83.02%
Methionine MET (M)31.13%
Leucine LEU (L)238.68%
Asparagine ASN (N)207.55%
Glutamine GLN (Q)72.64%
Proline PRO (P)155.66%
Serine SER (S)3212.08%
Arginine ARG (R)62.26%
Threonine THR (T)3011.32%
Tryptophan TRP (W)20.75%
Valine VAL (V)249.06%
Tyrosine TYR (Y)83.02%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1291
HydrogenH2026
NitrogenN326
OxygenO395
SulphurS3

FormulaC1291H2026N326O395S3
Total Number of Atoms:4041


Total number of positively charged residues (ARG + LYS):14
Total number of negatively charged residues (ASP + GLU):16
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    22920
Absorption 0.1% (=1 g/l)    0.803
Aromaticity:0.094

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 33.66

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[35.47, 30.57, 18.49]

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:98.9057
Grand average of hydropathicity (GRAVY):0.22