HIS3/YOR202W 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] 24 10.9%
Arg[R] 10 4.5%
Asn[N] 6 2.7%
Asp[D] 11 5.0%
Cys[C] 4 1.8%
Gln[Q] 7 3.2%
Glu[E] 18 8.2%
Gly[G] 17 7.7%
His[H] 12 5.5%
Ile[I] 16 7.3%
Leu[L] 20 9.1%
Lys[K] 12 5.5%
Met[M] 4 1.8%
Phe[F] 8 3.6%
Pro[P] 7 3.2%
Ser[S] 15 6.8%
Thr[T] 11 5.0%
Trp[W] 1 0.5%
Tyr[Y] 1 0.5%
Val[V] 16 7.3%
Total Length 220

Instability index
Instability index (II) 33.89
This classifies the protein as stable

Atomic composition
Carbon 1047
Hydrogen 1682
Nitrogen 300
Oxygen 319
Sulfur 8
Total number of atoms 3356
Formula = C1047H1682N300O319S8

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 7240 M-1 cm-1
assuming NO Cys residues appear as half cystines 6990 M-1 cm-1
assuming all Cys residues are reduced 6990 M-1 cm-1
assuming all pairs of Cys residues form cystines 7240 M-1 cm-1

Aliphatic index
Aliphatic index 95.82

Coding Region Translation Calculations
Codon Bias 0.003
Codon Adaptation Index 0.092
Frequency of Optimal Codons 0.400
Hydropathicity of Protein -0.085
Aromaticity Score 0.045