HIS5/YIL116W 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] 28 7.3%
Arg[R] 14 3.6%
Asn[N] 24 6.2%
Asp[D] 22 5.7%
Cys[C] 9 2.3%
Gln[Q] 9 2.3%
Glu[E] 23 6.0%
Gly[G] 23 6.0%
His[H] 5 1.3%
Ile[I] 22 5.7%
Leu[L] 46 11.9%
Lys[K] 28 7.3%
Met[M] 9 2.3%
Phe[F] 10 2.6%
Pro[P] 17 4.4%
Ser[S] 22 5.7%
Thr[T] 27 7.0%
Trp[W] 1 0.3%
Tyr[Y] 18 4.7%
Val[V] 28 7.3%
Total Length 385

Instability index
Instability index (II) 27.19
This classifies the protein as stable

Atomic composition
Carbon 1898
Hydrogen 3043
Nitrogen 499
Oxygen 576
Sulfur 18
Total number of atoms 6034
Formula = C1898H3043N499O576S18

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 32820 M-1 cm-1
assuming NO Cys residues appear as half cystines 32320 M-1 cm-1
assuming all Cys residues are reduced 32320 M-1 cm-1
assuming all pairs of Cys residues form cystines 32820 M-1 cm-1

Aliphatic index
Aliphatic index 97.25

Coding Region Translation Calculations
Codon Bias 0.220
Codon Adaptation Index 0.209
Frequency of Optimal Codons 0.533
Hydropathicity of Protein -0.127
Aromaticity Score 0.075