KEG1/YFR042W 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] 10 5.0%
Arg[R] 7 3.5%
Asn[N] 6 3.0%
Asp[D] 4 2.0%
Cys[C] 2 1.0%
Gln[Q] 4 2.0%
Glu[E] 5 2.5%
Gly[G] 7 3.5%
His[H] 7 3.5%
Ile[I] 16 8.0%
Leu[L] 39 19.5%
Lys[K] 14 7.0%
Met[M] 4 2.0%
Phe[F] 14 7.0%
Pro[P] 5 2.5%
Ser[S] 14 7.0%
Thr[T] 10 5.0%
Trp[W] 4 2.0%
Tyr[Y] 16 8.0%
Val[V] 12 6.0%
Total Length 200

Instability index
Instability index (II) 35.33
This classifies the protein as stable

Atomic composition
Carbon 1134
Hydrogen 1741
Nitrogen 263
Oxygen 269
Sulfur 6
Total number of atoms 3413
Formula = C1134H1741N263O269S6

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 45965 M-1 cm-1
assuming NO Cys residues appear as half cystines 45840 M-1 cm-1
assuming all Cys residues are reduced 45840 M-1 cm-1
assuming all pairs of Cys residues form cystines 45965 M-1 cm-1

Aliphatic index
Aliphatic index 129.65

Coding Region Translation Calculations
Codon Bias -0.013
Codon Adaptation Index 0.108
Frequency of Optimal Codons 0.385
Hydropathicity of Protein 0.560
Aromaticity Score 0.170