Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4059
Number of amino acids:293
Molecular Weight:32717.27 Da
Theoretical pI:9.07


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)289.56%
Cysteine CYS (C)10.34%
Glutamic Acid GLU (E)113.75%
Aspartic Acid ASP (D)186.14%
Glycine GLY (G)175.8%
Phynylalanine PHE (F)155.12%
Isoleucine ILE (I)196.48%
Histidine HIS (H)00%
Lysine LYS (K)206.83%
Methionine MET (M)51.71%
Leucine LEU (L)279.22%
Asparagine ASN (N)217.17%
Glutamine GLN (Q)155.12%
Proline PRO (P)62.05%
Serine SER (S)206.83%
Arginine ARG (R)144.78%
Threonine THR (T)196.48%
Tryptophan TRP (W)31.02%
Valine VAL (V)217.17%
Tyrosine TYR (Y)134.44%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1468
HydrogenH2316
NitrogenN394
OxygenO440
SulphurS6

FormulaC1468H2316N394O440S6
Total Number of Atoms:4624


Total number of positively charged residues (ARG + LYS):34
Total number of negatively charged residues (ASP + GLU):29
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    35870
Absorption 0.1% (=1 g/l)    1.096,   assuming all pairs of CYS residues form cystines

Ext. coefficient    35870
Absorption 0.1% (=1 g/l)    1.096,   assuming all CYS residues are reduced
Aromaticity:0.106

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 27.96

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[33.45, 21.84, 24.23]

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:91.57
Grand average of hydropathicity (GRAVY):-0.18