Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5885
Number of amino acids:94
Molecular Weight:10464.45 Da
Theoretical pI:9.69


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)55.32%
Cysteine CYS (C)22.13%
Glutamic Acid GLU (E)55.32%
Aspartic Acid ASP (D)22.13%
Glycine GLY (G)44.26%
Phynylalanine PHE (F)66.38%
Isoleucine ILE (I)55.32%
Histidine HIS (H)00%
Lysine LYS (K)77.45%
Methionine MET (M)11.06%
Leucine LEU (L)1212.77%
Asparagine ASN (N)55.32%
Glutamine GLN (Q)44.26%
Proline PRO (P)77.45%
Serine SER (S)66.38%
Arginine ARG (R)55.32%
Threonine THR (T)44.26%
Tryptophan TRP (W)11.06%
Valine VAL (V)1313.83%
Tyrosine TYR (Y)00%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC480
HydrogenH784
NitrogenN126
OxygenO128
SulphurS3

FormulaC480H784N126O128S3
Total Number of Atoms:1521


Total number of positively charged residues (ARG + LYS):12
Total number of negatively charged residues (ASP + GLU):7
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    5625
Absorption 0.1% (=1 g/l)    0.538,   assuming all pairs of CYS residues form cystines

Ext. coefficient    5500
Absorption 0.1% (=1 g/l)    0.526,   assuming all CYS residues are reduced
Aromaticity:0.074

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 33.19

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[39.36, 23.40, 24.47]

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:115.958
Grand average of hydropathicity (GRAVY):0.30