Physicochemical Properties of Peptide



PPepDB ID:PPepDB_3611
Number of amino acids:6
Molecular Weight:756.83 Da
Theoretical pI:6.46


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)00%
Cysteine CYS (C)00%
Glutamic Acid GLU (E)00%
Aspartic Acid ASP (D)00%
Glycine GLY (G)116.67%
Phynylalanine PHE (F)00%
Isoleucine ILE (I)00%
Histidine HIS (H)116.67%
Lysine LYS (K)00%
Methionine MET (M)116.67%
Leucine LEU (L)00%
Asparagine ASN (N)00%
Glutamine GLN (Q)00%
Proline PRO (P)00%
Serine SER (S)116.67%
Arginine ARG (R)00%
Threonine THR (T)00%
Tryptophan TRP (W)00%
Valine VAL (V)00%
Tyrosine TYR (Y)233.33%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC34
HydrogenH44
NitrogenN8
OxygenO10
SulphurS1

FormulaC34H44N8O10S1
Total Number of Atoms:97


Total number of positively charged residues (ARG + LYS):0
Total number of negatively charged residues (ASP + GLU):0
Extinction Coefficient:This protein does not contain any Tryptophan residues. Experience shows that this could result in more than 10% error in the computed extinction coefficient.

Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    2980
Absorption 0.1% (=1 g/l)    3.937
Aromaticity:0.333

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 183.45

This indicates that the protein/peptide is unstable
Secondary Structure Fraction [Helix, Turn, Sheet]:[33.33, 33.33, 16.67]

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:0
Grand average of hydropathicity (GRAVY):-0.85