PEX18/YHR160C 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] 11 3.9%
Arg[R] 11 3.9%
Asn[N] 32 11.3%
Asp[D] 18 6.4%
Cys[C] 3 1.1%
Gln[Q] 10 3.5%
Glu[E] 26 9.2%
Gly[G] 15 5.3%
His[H] 7 2.5%
Ile[I] 18 6.4%
Leu[L] 22 7.8%
Lys[K] 18 6.4%
Met[M] 4 1.4%
Phe[F] 18 6.4%
Pro[P] 11 3.9%
Ser[S] 29 10.2%
Thr[T] 14 4.9%
Trp[W] 2 0.7%
Tyr[Y] 4 1.4%
Val[V] 10 3.5%
Total Length 283

Instability index
Instability index (II) 46.34
This classifies the protein as unstable

Atomic composition
Carbon 1396
Hydrogen 2162
Nitrogen 392
Oxygen 461
Sulfur 7
Total number of atoms 4418
Formula = C1396H2162N392O461S7

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 17085 M-1 cm-1
assuming NO Cys residues appear as half cystines 16960 M-1 cm-1
assuming all Cys residues are reduced 16960 M-1 cm-1
assuming all pairs of Cys residues form cystines 17085 M-1 cm-1

Aliphatic index
Aliphatic index 69.26

Coding Region Translation Calculations
Codon Bias -0.021
Codon Adaptation Index 0.131
Frequency of Optimal Codons 0.408
Hydropathicity of Protein -0.759
Aromaticity Score 0.085