IRA2/YOL081W 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] 147 4.8%
Arg[R] 136 4.4%
Asn[N] 189 6.1%
Asp[D] 157 5.1%
Cys[C] 38 1.2%
Gln[Q] 97 3.2%
Glu[E] 179 5.8%
Gly[G] 93 3.0%
His[H] 101 3.3%
Ile[I] 258 8.4%
Leu[L] 339 11.0%
Lys[K] 179 5.8%
Met[M] 79 2.6%
Phe[F] 171 5.6%
Pro[P] 117 3.8%
Ser[S] 332 10.8%
Thr[T] 197 6.4%
Trp[W] 20 0.6%
Tyr[Y] 109 3.5%
Val[V] 141 4.6%
Total Length 3079

Instability index
Instability index (II) 46.04
This classifies the protein as unstable

Atomic composition
Carbon 15792
Hydrogen 24766
Nitrogen 4174
Oxygen 4676
Sulfur 117
Total number of atoms 49525
Formula = C15792H24766N4174O4676S117

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 274785 M-1 cm-1
assuming NO Cys residues appear as half cystines 272410 M-1 cm-1
assuming all Cys residues are reduced 272410 M-1 cm-1
assuming all pairs of Cys residues form cystines 274785 M-1 cm-1

Aliphatic index
Aliphatic index 93.67

Coding Region Translation Calculations
Codon Bias 0.055
Codon Adaptation Index 0.139
Frequency of Optimal Codons 0.445
Hydropathicity of Protein -0.184
Aromaticity Score 0.097