Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5028
Number of amino acids:364
Molecular Weight:40492.11 Da
Theoretical pI:5.44


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)349.34%
Cysteine CYS (C)61.65%
Glutamic Acid GLU (E)3710.16%
Aspartic Acid ASP (D)236.32%
Glycine GLY (G)236.32%
Phynylalanine PHE (F)195.22%
Isoleucine ILE (I)154.12%
Histidine HIS (H)61.65%
Lysine LYS (K)4211.54%
Methionine MET (M)30.82%
Leucine LEU (L)297.97%
Asparagine ASN (N)113.02%
Glutamine GLN (Q)41.1%
Proline PRO (P)143.85%
Serine SER (S)256.87%
Arginine ARG (R)92.47%
Threonine THR (T)143.85%
Tryptophan TRP (W)41.1%
Valine VAL (V)328.79%
Tyrosine TYR (Y)143.85%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1830
HydrogenH2854
NitrogenN464
OxygenO553
SulphurS9

FormulaC1830H2854N464O553S9
Total Number of Atoms:5710


Total number of positively charged residues (ARG + LYS):51
Total number of negatively charged residues (ASP + GLU):60
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    43235
Absorption 0.1% (=1 g/l)    1.068,   assuming all pairs of CYS residues form cystines

Ext. coefficient    42860
Absorption 0.1% (=1 g/l)    1.058,   assuming all CYS residues are reduced
Aromaticity:0.102

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 30.62

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[31.04, 20.05, 28.30]

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:81.978
Grand average of hydropathicity (GRAVY):-0.34