OPI1/YHL020C 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] 19 4.7%
Arg[R] 16 4.0%
Asn[N] 22 5.4%
Asp[D] 34 8.4%
Cys[C] 4 1.0%
Gln[Q] 47 11.6%
Glu[E] 35 8.7%
Gly[G] 13 3.2%
His[H] 8 2.0%
Ile[I] 12 3.0%
Leu[L] 36 8.9%
Lys[K] 35 8.7%
Met[M] 7 1.7%
Phe[F] 9 2.2%
Pro[P] 11 2.7%
Ser[S] 40 9.9%
Thr[T] 16 4.0%
Trp[W] 2 0.5%
Tyr[Y] 8 2.0%
Val[V] 30 7.4%
Total Length 404

Instability index
Instability index (II) 71.04
This classifies the protein as unstable

Atomic composition
Carbon 1970
Hydrogen 3170
Nitrogen 574
Oxygen 676
Sulfur 11
Total number of atoms 6401
Formula = C1970H3170N574O676S11

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 23170 M-1 cm-1
assuming NO Cys residues appear as half cystines 22920 M-1 cm-1
assuming all Cys residues are reduced 22920 M-1 cm-1
assuming all pairs of Cys residues form cystines 23170 M-1 cm-1

Aliphatic index
Aliphatic index 72.57

Coding Region Translation Calculations
Codon Bias -0.021
Codon Adaptation Index 0.089
Frequency of Optimal Codons 0.405
Hydropathicity of Protein -0.980
Aromaticity Score 0.047