ENA5/YDR038C 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] 80 7.3%
Arg[R] 41 3.8%
Asn[N] 60 5.5%
Asp[D] 70 6.4%
Cys[C] 16 1.5%
Gln[Q] 28 2.6%
Glu[E] 61 5.6%
Gly[G] 72 6.6%
His[H] 20 1.8%
Ile[I] 81 7.4%
Leu[L] 90 8.2%
Lys[K] 63 5.8%
Met[M] 29 2.7%
Phe[F] 52 4.8%
Pro[P] 37 3.4%
Ser[S] 94 8.6%
Thr[T] 69 6.3%
Trp[W] 16 1.5%
Tyr[Y] 25 2.3%
Val[V] 87 8.0%
Total Length 1091

Instability index
Instability index (II) 36.35
This classifies the protein as stable

Atomic composition
Carbon 5359
Hydrogen 8437
Nitrogen 1421
Oxygen 1630
Sulfur 45
Total number of atoms 16892
Formula = C5359H8437N1421O1630S45

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 126250 M-1 cm-1
assuming NO Cys residues appear as half cystines 125250 M-1 cm-1
assuming all Cys residues are reduced 125250 M-1 cm-1
assuming all pairs of Cys residues form cystines 126250 M-1 cm-1

Aliphatic index
Aliphatic index 91.59

Coding Region Translation Calculations
Codon Bias 0.187
Codon Adaptation Index 0.190
Frequency of Optimal Codons 0.521
Hydropathicity of Protein -0.057
Aromaticity Score 0.085