SOD1/YJR104C 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] 13 8.4%
Arg[R] 4 2.6%
Asn[N] 8 5.2%
Asp[D] 9 5.8%
Cys[C] 2 1.3%
Gln[Q] 3 1.9%
Glu[E] 10 6.5%
Gly[G] 22 14.3%
His[H] 6 3.9%
Ile[I] 6 3.9%
Leu[L] 6 3.9%
Lys[K] 10 6.5%
Met[M] 2 1.3%
Phe[F] 6 3.9%
Pro[P] 8 5.2%
Ser[S] 11 7.1%
Thr[T] 10 6.5%
Trp[W] 0 0.0%
Tyr[Y] 1 0.6%
Val[V] 17 11.0%
Total Length 154

Instability index
Instability index (II) 24.80
This classifies the protein as stable

Atomic composition
Carbon 685
Hydrogen 1087
Nitrogen 199
Oxygen 226
Sulfur 4
Total number of atoms 2201
Formula = C685H1087N199O226S4

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 1615 M-1 cm-1
assuming NO Cys residues appear as half cystines 1490 M-1 cm-1
assuming all Cys residues are reduced 1490 M-1 cm-1
assuming all pairs of Cys residues form cystines 1615 M-1 cm-1

Aliphatic index
Aliphatic index 70.84

Coding Region Translation Calculations
Codon Bias 0.494
Codon Adaptation Index 0.377
Frequency of Optimal Codons 0.697
Hydropathicity of Protein -0.323
Aromaticity Score 0.045