Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4527
Number of amino acids:326
Molecular Weight:35308.33 Da
Theoretical pI:7.19


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)3711.35%
Cysteine CYS (C)82.45%
Glutamic Acid GLU (E)144.29%
Aspartic Acid ASP (D)216.44%
Glycine GLY (G)267.98%
Phynylalanine PHE (F)195.83%
Isoleucine ILE (I)51.53%
Histidine HIS (H)72.15%
Lysine LYS (K)164.91%
Methionine MET (M)103.07%
Leucine LEU (L)3410.43%
Asparagine ASN (N)133.99%
Glutamine GLN (Q)82.45%
Proline PRO (P)123.68%
Serine SER (S)237.06%
Arginine ARG (R)195.83%
Threonine THR (T)206.13%
Tryptophan TRP (W)20.61%
Valine VAL (V)267.98%
Tyrosine TYR (Y)61.84%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC1555
HydrogenH2456
NitrogenN436
OxygenO467
SulphurS18

FormulaC1555H2456N436O467S18
Total Number of Atoms:4932


Total number of positively charged residues (ARG + LYS):35
Total number of negatively charged residues (ASP + GLU):35
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    20440
Absorption 0.1% (=1 g/l)    0.579,   assuming all pairs of CYS residues form cystines

Ext. coefficient    19940
Absorption 0.1% (=1 g/l)    0.565,   assuming all CYS residues are reduced
Aromaticity:0.083

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 35.63

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[28.22, 22.70, 29.14]

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:81.1348
Grand average of hydropathicity (GRAVY):-0.06