ERV25/YML012W 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 6.2%
Arg[R] 18 8.5%
Asn[N] 11 5.2%
Asp[D] 15 7.1%
Cys[C] 2 0.9%
Gln[Q] 9 4.3%
Glu[E] 17 8.1%
Gly[G] 10 4.7%
His[H] 3 1.4%
Ile[I] 15 7.1%
Leu[L] 20 9.5%
Lys[K] 9 4.3%
Met[M] 1 0.5%
Phe[F] 9 4.3%
Pro[P] 3 1.4%
Ser[S] 15 7.1%
Thr[T] 11 5.2%
Trp[W] 3 1.4%
Tyr[Y] 5 2.4%
Val[V] 22 10.4%
Total Length 211

Instability index
Instability index (II) 39.34
This classifies the protein as stable

Atomic composition
Carbon 1067
Hydrogen 1705
Nitrogen 303
Oxygen 327
Sulfur 3
Total number of atoms 3405
Formula = C1067H1705N303O327S3

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 24075 M-1 cm-1
assuming NO Cys residues appear as half cystines 23950 M-1 cm-1
assuming all Cys residues are reduced 23950 M-1 cm-1
assuming all pairs of Cys residues form cystines 24075 M-1 cm-1

Aliphatic index
Aliphatic index 101.09

Coding Region Translation Calculations
Codon Bias 0.258
Codon Adaptation Index 0.214
Frequency of Optimal Codons 0.560
Hydropathicity of Protein -0.256
Aromaticity Score 0.081