UBC4/YBR082C 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] 12 8.1%
Arg[R] 4 2.7%
Asn[N] 5 3.4%
Asp[D] 12 8.1%
Cys[C] 3 2.0%
Gln[Q] 2 1.4%
Glu[E] 5 3.4%
Gly[G] 6 4.1%
His[H] 4 2.7%
Ile[I] 11 7.4%
Leu[L] 13 8.8%
Lys[K] 11 7.4%
Met[M] 2 1.4%
Phe[F] 5 3.4%
Pro[P] 15 10.1%
Ser[S] 14 9.5%
Thr[T] 9 6.1%
Trp[W] 3 2.0%
Tyr[Y] 7 4.7%
Val[V] 5 3.4%
Total Length 148

Instability index
Instability index (II) 48.24
This classifies the protein as unstable

Atomic composition
Carbon 747
Hydrogen 1147
Nitrogen 189
Oxygen 220
Sulfur 5
Total number of atoms 2308
Formula = C747H1147N189O220S5

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 27055 M-1 cm-1
assuming NO Cys residues appear as half cystines 26930 M-1 cm-1
assuming all Cys residues are reduced 26930 M-1 cm-1
assuming all pairs of Cys residues form cystines 27055 M-1 cm-1

Aliphatic index
Aliphatic index 81.15

Coding Region Translation Calculations
Codon Bias 0.337
Codon Adaptation Index 0.313
Frequency of Optimal Codons 0.601
Hydropathicity of Protein -0.315
Aromaticity Score 0.101