SEC23/YPR181C 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] 62 8.1%
Arg[R] 30 3.9%
Asn[N] 46 6.0%
Asp[D] 46 6.0%
Cys[C] 11 1.4%
Gln[Q] 37 4.8%
Glu[E] 35 4.6%
Gly[G] 38 4.9%
His[H] 18 2.3%
Ile[I] 44 5.7%
Leu[L] 79 10.3%
Lys[K] 31 4.0%
Met[M] 16 2.1%
Phe[F] 39 5.1%
Pro[P] 48 6.2%
Ser[S] 62 8.1%
Thr[T] 52 6.8%
Trp[W] 6 0.8%
Tyr[Y] 28 3.6%
Val[V] 40 5.2%
Total Length 768

Instability index
Instability index (II) 41.77
This classifies the protein as unstable

Atomic composition
Carbon 3818
Hydrogen 5916
Nitrogen 1014
Oxygen 1156
Sulfur 27
Total number of atoms 11931
Formula = C3818H5916N1014O1156S27

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 75345 M-1 cm-1
assuming NO Cys residues appear as half cystines 74720 M-1 cm-1
assuming all Cys residues are reduced 74720 M-1 cm-1
assuming all pairs of Cys residues form cystines 75345 M-1 cm-1

Aliphatic index
Aliphatic index 85.64

Coding Region Translation Calculations
Codon Bias 0.292
Codon Adaptation Index 0.229
Frequency of Optimal Codons 0.574
Hydropathicity of Protein -0.211
Aromaticity Score 0.095