PAC1/YOR269W 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] 15 3.0%
Arg[R] 22 4.5%
Asn[N] 30 6.1%
Asp[D] 31 6.3%
Cys[C] 10 2.0%
Gln[Q] 25 5.1%
Glu[E] 21 4.3%
Gly[G] 18 3.6%
His[H] 21 4.3%
Ile[I] 32 6.5%
Leu[L] 47 9.5%
Lys[K] 30 6.1%
Met[M] 8 1.6%
Phe[F] 20 4.0%
Pro[P] 19 3.8%
Ser[S] 45 9.1%
Thr[T] 36 7.3%
Trp[W] 15 3.0%
Tyr[Y] 11 2.2%
Val[V] 38 7.7%
Total Length 494

Instability index
Instability index (II) 28.90
This classifies the protein as stable

Atomic composition
Carbon 2545
Hydrogen 3956
Nitrogen 702
Oxygen 746
Sulfur 18
Total number of atoms 7967
Formula = C2545H3956N702O746S18

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 99515 M-1 cm-1
assuming NO Cys residues appear as half cystines 98890 M-1 cm-1
assuming all Cys residues are reduced 98890 M-1 cm-1
assuming all pairs of Cys residues form cystines 99515 M-1 cm-1

Aliphatic index
Aliphatic index 87.71

Coding Region Translation Calculations
Codon Bias 0.057
Codon Adaptation Index 0.150
Frequency of Optimal Codons 0.452
Hydropathicity of Protein -0.362
Aromaticity Score 0.093