ERV2/YPR037C 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] 17 8.7%
Arg[R] 8 4.1%
Asn[N] 4 2.0%
Asp[D] 11 5.6%
Cys[C] 6 3.1%
Gln[Q] 5 2.6%
Glu[E] 17 8.7%
Gly[G] 13 6.6%
His[H] 7 3.6%
Ile[I] 15 7.7%
Leu[L] 15 7.7%
Lys[K] 20 10.2%
Met[M] 5 2.6%
Phe[F] 6 3.1%
Pro[P] 7 3.6%
Ser[S] 12 6.1%
Thr[T] 8 4.1%
Trp[W] 3 1.5%
Tyr[Y] 8 4.1%
Val[V] 9 4.6%
Total Length 196

Instability index
Instability index (II) 45.55
This classifies the protein as unstable

Atomic composition
Carbon 987
Hydrogen 1556
Nitrogen 266
Oxygen 290
Sulfur 11
Total number of atoms 3110
Formula = C987H1556N266O290S11

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 28795 M-1 cm-1
assuming NO Cys residues appear as half cystines 28420 M-1 cm-1
assuming all Cys residues are reduced 28420 M-1 cm-1
assuming all pairs of Cys residues form cystines 28795 M-1 cm-1

Aliphatic index
Aliphatic index 81.68

Coding Region Translation Calculations
Codon Bias 0.094
Codon Adaptation Index 0.116
Frequency of Optimal Codons 0.468
Hydropathicity of Protein -0.390
Aromaticity Score 0.087