RER2/YBR002C 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] 16 5.6%
Arg[R] 22 7.7%
Asn[N] 10 3.5%
Asp[D] 15 5.2%
Cys[C] 5 1.7%
Gln[Q] 3 1.0%
Glu[E] 27 9.4%
Gly[G] 18 6.3%
His[H] 7 2.4%
Ile[I] 20 7.0%
Leu[L] 30 10.5%
Lys[K] 21 7.3%
Met[M] 7 2.4%
Phe[F] 14 4.9%
Pro[P] 8 2.8%
Ser[S] 21 7.3%
Thr[T] 16 5.6%
Trp[W] 4 1.4%
Tyr[Y] 6 2.1%
Val[V] 16 5.6%
Total Length 286

Instability index
Instability index (II) 38.96
This classifies the protein as stable

Atomic composition
Carbon 1455
Hydrogen 2324
Nitrogen 404
Oxygen 427
Sulfur 12
Total number of atoms 4622
Formula = C1455H2324N404O427S12

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 31190 M-1 cm-1
assuming NO Cys residues appear as half cystines 30940 M-1 cm-1
assuming all Cys residues are reduced 30940 M-1 cm-1
assuming all pairs of Cys residues form cystines 31190 M-1 cm-1

Aliphatic index
Aliphatic index 90.00

Coding Region Translation Calculations
Codon Bias 0.003
Codon Adaptation Index 0.109
Frequency of Optimal Codons 0.400
Hydropathicity of Protein -0.315
Aromaticity Score 0.084