TOS4/YLR183C 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] 17 3.5%
Arg[R] 30 6.1%
Asn[N] 29 5.9%
Asp[D] 27 5.5%
Cys[C] 8 1.6%
Gln[Q] 20 4.1%
Glu[E] 28 5.7%
Gly[G] 21 4.3%
His[H] 12 2.5%
Ile[I] 24 4.9%
Leu[L] 38 7.8%
Lys[K] 44 9.0%
Met[M] 11 2.2%
Phe[F] 20 4.1%
Pro[P] 30 6.1%
Ser[S] 64 13.1%
Thr[T] 23 4.7%
Trp[W] 1 0.2%
Tyr[Y] 17 3.5%
Val[V] 25 5.1%
Total Length 489

Instability index
Instability index (II) 56.61
This classifies the protein as unstable

Atomic composition
Carbon 2427
Hydrogen 3867
Nitrogen 697
Oxygen 753
Sulfur 19
Total number of atoms 7763
Formula = C2427H3867N697O753S19

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 31330 M-1 cm-1
assuming NO Cys residues appear as half cystines 30830 M-1 cm-1
assuming all Cys residues are reduced 30830 M-1 cm-1
assuming all pairs of Cys residues form cystines 31330 M-1 cm-1

Aliphatic index
Aliphatic index 67.75

Coding Region Translation Calculations
Codon Bias 0.087
Codon Adaptation Index 0.148
Frequency of Optimal Codons 0.455
Hydropathicity of Protein -0.758
Aromaticity Score 0.078