Physicochemical Properties of Peptide



PPepDB ID:PPepDB_4739
Number of amino acids:570
Molecular Weight:64026.98 Da
Theoretical pI:9.67


Amino Acid Composition:


Amino acidAmino acid countAmino acid percentage
Alanine ALA (A)447.72%
Cysteine CYS (C)71.23%
Glutamic Acid GLU (E)132.28%
Aspartic Acid ASP (D)203.51%
Glycine GLY (G)447.72%
Phynylalanine PHE (F)345.96%
Isoleucine ILE (I)315.44%
Histidine HIS (H)152.63%
Lysine LYS (K)111.93%
Methionine MET (M)122.11%
Leucine LEU (L)396.84%
Asparagine ASN (N)376.49%
Glutamine GLN (Q)305.26%
Proline PRO (P)498.6%
Serine SER (S)264.56%
Arginine ARG (R)407.02%
Threonine THR (T)447.72%
Tryptophan TRP (W)122.11%
Valine VAL (V)386.67%
Tyrosine TYR (Y)244.21%


Atomic Composition:


ElementElement's AbbreviationCount
CarbonC2903
HydrogenH4402
NitrogenN810
OxygenO798
SulphurS19

FormulaC2903H4402N810O798S19
Total Number of Atoms:8932


Total number of positively charged residues (ARG + LYS):51
Total number of negatively charged residues (ASP + GLU):33
Extinction Coefficient:Extinction coefficients are in units of M-1 cm-1, at 280 nm measured in water.

Ext. coefficient    102135
Absorption 0.1% (=1 g/l)    1.595,   assuming all pairs of CYS residues form cystines

Ext. coefficient    101760
Absorption 0.1% (=1 g/l)    1.589,   assuming all CYS residues are reduced
Aromaticity:0.123

Aromaticity is the calculated relative frequency of Phe+Trp+Tyr
Instability Index:The computed Instability Index (II) is : 35.80

This indicates that the protein/peptide is stable
Secondary Structure Fraction [Helix, Turn, Sheet]:[31.23, 27.37, 18.95]

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:74.9474
Grand average of hydropathicity (GRAVY):-0.26