Physicochemical Properties of Peptide



PPepDB ID:PPepDB_5035
Number of amino acids:479
Molecular Weight:54838.59 Da
Theoretical pI:8.4


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)275.64%
Cysteine CYS (C)132.71%
Glutamic Acid GLU (E)326.68%
Aspartic Acid ASP (D)214.38%
Glycine GLY (G)285.85%
Phynylalanine PHE (F)214.38%
Isoleucine ILE (I)285.85%
Histidine HIS (H)91.88%
Lysine LYS (K)377.72%
Methionine MET (M)142.92%
Leucine LEU (L)347.1%
Asparagine ASN (N)265.43%
Glutamine GLN (Q)183.76%
Proline PRO (P)193.97%
Serine SER (S)387.93%
Arginine ARG (R)214.38%
Threonine THR (T)285.85%
Tryptophan TRP (W)91.88%
Valine VAL (V)296.05%
Tyrosine TYR (Y)275.64%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2455
HydrogenH3784
NitrogenN650
OxygenO723
SulphurS27

FormulaC2455H3784N650O723S27
Total Number of Atoms:7639


Total number of positively charged residues (ARG + LYS):58
Total number of negatively charged residues (ASP + GLU):53
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    90480
Absorption 0.1% (=1 g/l)    1.650,   assuming all pairs of CYS residues form cystines

Ext. coefficient    89730
Absorption 0.1% (=1 g/l)    1.636,   assuming all CYS residues are reduced
Aromaticity:0.119

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 38.97

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[30.90, 23.17, 22.34]

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:73.6743
Grand average of hydropathicity (GRAVY):-0.41