Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4522
Number of amino acids:892
Molecular Weight:95343.87 Da
Theoretical pI:9.14


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)9510.65%
Cysteine CYS (C)60.67%
Glutamic Acid GLU (E)525.83%
Aspartic Acid ASP (D)505.61%
Glycine GLY (G)657.29%
Phynylalanine PHE (F)303.36%
Isoleucine ILE (I)222.47%
Histidine HIS (H)141.57%
Lysine LYS (K)434.82%
Methionine MET (M)171.91%
Leucine LEU (L)758.41%
Asparagine ASN (N)232.58%
Glutamine GLN (Q)182.02%
Proline PRO (P)10712%
Serine SER (S)808.97%
Arginine ARG (R)707.85%
Threonine THR (T)626.95%
Tryptophan TRP (W)40.45%
Valine VAL (V)495.49%
Tyrosine TYR (Y)101.12%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC4176
HydrogenH6696
NitrogenN1218
OxygenO1290
SulphurS23

FormulaC4176H6696N1218O1290S23
Total Number of Atoms:13403


Total number of positively charged residues (ARG + LYS):113
Total number of negatively charged residues (ASP + GLU):102
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    37275
Absorption 0.1% (=1 g/l)    0.391,   assuming all pairs of CYS residues form cystines

Ext. coefficient    36900
Absorption 0.1% (=1 g/l)    0.387,   assuming all CYS residues are reduced
Aromaticity:0.049

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 56.55

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[21.30, 30.83, 26.79]

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:68.991
Grand average of hydropathicity (GRAVY):-0.51