PAF1/YBR279W 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 3.6%
Arg[R] 23 5.2%
Asn[N] 24 5.4%
Asp[D] 51 11.5%
Cys[C] 0 0.0%
Gln[Q] 17 3.8%
Glu[E] 51 11.5%
Gly[G] 14 3.1%
His[H] 7 1.6%
Ile[I] 26 5.8%
Leu[L] 39 8.8%
Lys[K] 49 11.0%
Met[M] 12 2.7%
Phe[F] 10 2.2%
Pro[P] 21 4.7%
Ser[S] 25 5.6%
Thr[T] 24 5.4%
Trp[W] 3 0.7%
Tyr[Y] 12 2.7%
Val[V] 21 4.7%
Total Length 445

Instability index
Instability index (II) 54.45
This classifies the protein as unstable

Atomic composition
Carbon 2252
Hydrogen 3609
Nitrogen 621
Oxygen 752
Sulfur 12
Total number of atoms 7246
Formula = C2252H3609N621O752S12

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 34380 M-1 cm-1

Aliphatic index
Aliphatic index 74.25

Coding Region Translation Calculations
Codon Bias 0.106
Codon Adaptation Index 0.184
Frequency of Optimal Codons 0.484
Hydropathicity of Protein -1.076
Aromaticity Score 0.056