Q0092 Additional Physico-chemical Properties Help

Physico-chemical properties were determined using the ProtParam tool available through ExPASy to analyze the primary protein sequence for atomic composition, extinction coefficient, estimated half-life, instability index and aliphatic index. Transcript translation calculations were determined using CodonW.


A.A. Composition
Ala[A] 0 0.0%
Arg[R] 3 6.5%
Asn[N] 6 13.0%
Asp[D] 0 0.0%
Cys[C] 1 2.2%
Gln[Q] 0 0.0%
Glu[E] 0 0.0%
Gly[G] 0 0.0%
His[H] 0 0.0%
Ile[I] 6 13.0%
Leu[L] 0 0.0%
Lys[K] 1 2.2%
Met[M] 11 23.9%
Phe[F] 6 13.0%
Pro[P] 0 0.0%
Ser[S] 1 2.2%
Thr[T] 4 8.7%
Trp[W] 0 0.0%
Tyr[Y] 4 8.7%
Val[V] 3 6.5%
Total Length 46

Instability index
Instability index (II) 47.61
This classifies the protein as unstable

Atomic composition
Carbon 266
Hydrogen 406
Nitrogen 62
Oxygen 62
Sulfur 12
Total number of atoms 808
Formula = C266H406N62O62S12

Estimated half-life
Escherichia coli (in vivo) >10 hours
mammalian reticulocytes (in vitro) 30 hours
yeast (in vivo) >20 hours

Extinction Coefficients at 280 nm
assuming ALL Cys residues appear as half cystines 5960 M-1 cm-1
assuming NO Cys residues appear as half cystines 5960 M-1 cm-1
assuming all Cys residues are reduced 5960 M-1 cm-1
assuming all pairs of Cys residues form cystines 5960 M-1 cm-1

Aliphatic index
Aliphatic index 69.78

Coding Region Translation Calculations
Codon Bias -0.440
Codon Adaptation Index 0.045
Frequency of Optimal Codons 0.314
Hydropathicity of Protein 0.709
Aromaticity Score 0.217