Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3999
Number of amino acids:906
Molecular Weight:95753.43 Da
Theoretical pI:8.41


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)10912.03%
Cysteine CYS (C)90.99%
Glutamic Acid GLU (E)505.52%
Aspartic Acid ASP (D)485.3%
Glycine GLY (G)808.83%
Phynylalanine PHE (F)252.76%
Isoleucine ILE (I)242.65%
Histidine HIS (H)212.32%
Lysine LYS (K)465.08%
Methionine MET (M)202.21%
Leucine LEU (L)859.38%
Asparagine ASN (N)212.32%
Glutamine GLN (Q)424.64%
Proline PRO (P)869.49%
Serine SER (S)879.6%
Arginine ARG (R)566.18%
Threonine THR (T)323.53%
Tryptophan TRP (W)60.66%
Valine VAL (V)525.74%
Tyrosine TYR (Y)70.77%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC4175
HydrogenH6711
NitrogenN1231
OxygenO1292
SulphurS29

FormulaC4175H6711N1231O1292S29
Total Number of Atoms:13438


Total number of positively charged residues (ARG + LYS):102
Total number of negatively charged residues (ASP + GLU):98
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    43930
Absorption 0.1% (=1 g/l)    0.459,   assuming all pairs of CYS residues form cystines

Ext. coefficient    43430
Absorption 0.1% (=1 g/l)    0.454,   assuming all CYS residues are reduced
Aromaticity:0.042

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 60.38

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[21.96, 30.24, 29.14]

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:75.596
Grand average of hydropathicity (GRAVY):-0.40