Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5241
Number of amino acids:286
Molecular Weight:32031.86 Da
Theoretical pI:8.94


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)269.09%
Cysteine CYS (C)10.35%
Glutamic Acid GLU (E)124.2%
Aspartic Acid ASP (D)134.55%
Glycine GLY (G)103.5%
Phynylalanine PHE (F)175.94%
Isoleucine ILE (I)238.04%
Histidine HIS (H)31.05%
Lysine LYS (K)175.94%
Methionine MET (M)20.7%
Leucine LEU (L)3110.84%
Asparagine ASN (N)175.94%
Glutamine GLN (Q)82.8%
Proline PRO (P)113.85%
Serine SER (S)217.34%
Arginine ARG (R)124.2%
Threonine THR (T)269.09%
Tryptophan TRP (W)10.35%
Valine VAL (V)206.99%
Tyrosine TYR (Y)155.24%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1468
HydrogenH2305
NitrogenN371
OxygenO424
SulphurS3

FormulaC1468H2305N371O424S3
Total Number of Atoms:4571


Total number of positively charged residues (ARG + LYS):29
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    27850
Absorption 0.1% (=1 g/l)    0.869,   assuming all pairs of CYS residues form cystines

Ext. coefficient    27850
Absorption 0.1% (=1 g/l)    0.869,   assuming all CYS residues are reduced
Aromaticity:0.115

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 29.05

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[37.41, 20.63, 24.83]

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:103.007
Grand average of hydropathicity (GRAVY):0.08