STE4/YOR212W 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] 34 8.0%
Arg[R] 16 3.8%
Asn[N] 27 6.4%
Asp[D] 29 6.9%
Cys[C] 9 2.1%
Gln[Q] 21 5.0%
Glu[E] 15 3.5%
Gly[G] 25 5.9%
His[H] 8 1.9%
Ile[I] 29 6.9%
Leu[L] 28 6.6%
Lys[K] 22 5.2%
Met[M] 11 2.6%
Phe[F] 12 2.8%
Pro[P] 13 3.1%
Ser[S] 54 12.8%
Thr[T] 23 5.4%
Trp[W] 8 1.9%
Tyr[Y] 16 3.8%
Val[V] 23 5.4%
Total Length 423

Instability index
Instability index (II) 52.31
This classifies the protein as unstable

Atomic composition
Carbon 2030
Hydrogen 3171
Nitrogen 565
Oxygen 653
Sulfur 20
Total number of atoms 6439
Formula = C2030H3171N565O653S20

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 68340 M-1 cm-1
assuming NO Cys residues appear as half cystines 67840 M-1 cm-1
assuming all Cys residues are reduced 67840 M-1 cm-1
assuming all pairs of Cys residues form cystines 68340 M-1 cm-1

Aliphatic index
Aliphatic index 76.36

Coding Region Translation Calculations
Codon Bias 0.020
Codon Adaptation Index 0.128
Frequency of Optimal Codons 0.421
Hydropathicity of Protein -0.359
Aromaticity Score 0.085