IRR1/YIL026C 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] 55 4.8%
Arg[R] 42 3.7%
Asn[N] 67 5.8%
Asp[D] 91 7.9%
Cys[C] 11 1.0%
Gln[Q] 47 4.1%
Glu[E] 103 9.0%
Gly[G] 20 1.7%
His[H] 24 2.1%
Ile[I] 91 7.9%
Leu[L] 131 11.4%
Lys[K] 98 8.5%
Met[M] 16 1.4%
Phe[F] 57 5.0%
Pro[P] 34 3.0%
Ser[S] 95 8.3%
Thr[T] 67 5.8%
Trp[W] 10 0.9%
Tyr[Y] 33 2.9%
Val[V] 58 5.0%
Total Length 1150

Instability index
Instability index (II) 41.39
This classifies the protein as unstable

Atomic composition
Carbon 5949
Hydrogen 9394
Nitrogen 1546
Oxygen 1848
Sulfur 27
Total number of atoms 18764
Formula = C5949H9394N1546O1848S27

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 104795 M-1 cm-1
assuming NO Cys residues appear as half cystines 104170 M-1 cm-1
assuming all Cys residues are reduced 104170 M-1 cm-1
assuming all pairs of Cys residues form cystines 104795 M-1 cm-1

Aliphatic index
Aliphatic index 94.70

Coding Region Translation Calculations
Codon Bias 0.078
Codon Adaptation Index 0.169
Frequency of Optimal Codons 0.469
Hydropathicity of Protein -0.431
Aromaticity Score 0.087