SEC66/YBR171W 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] 9 4.4%
Arg[R] 10 4.9%
Asn[N] 12 5.8%
Asp[D] 6 2.9%
Cys[C] 3 1.5%
Gln[Q] 9 4.4%
Glu[E] 25 12.1%
Gly[G] 6 2.9%
His[H] 2 1.0%
Ile[I] 15 7.3%
Leu[L] 21 10.2%
Lys[K] 21 10.2%
Met[M] 4 1.9%
Phe[F] 12 5.8%
Pro[P] 5 2.4%
Ser[S] 15 7.3%
Thr[T] 7 3.4%
Trp[W] 3 1.5%
Tyr[Y] 7 3.4%
Val[V] 14 6.8%
Total Length 206

Instability index
Instability index (II) 41.52
This classifies the protein as unstable

Atomic composition
Carbon 1096
Hydrogen 1733
Nitrogen 285
Oxygen 319
Sulfur 7
Total number of atoms 3440
Formula = C1096H1733N285O319S7

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 27055 M-1 cm-1
assuming NO Cys residues appear as half cystines 26930 M-1 cm-1
assuming all Cys residues are reduced 26930 M-1 cm-1
assuming all pairs of Cys residues form cystines 27055 M-1 cm-1

Aliphatic index
Aliphatic index 92.23

Coding Region Translation Calculations
Codon Bias 0.103
Codon Adaptation Index 0.172
Frequency of Optimal Codons 0.482
Hydropathicity of Protein -0.405
Aromaticity Score 0.107