SEC13/YLR208W 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] 23 7.7%
Arg[R] 8 2.7%
Asn[N] 13 4.4%
Asp[D] 17 5.7%
Cys[C] 3 1.0%
Gln[Q] 7 2.4%
Glu[E] 23 7.7%
Gly[G] 22 7.4%
His[H] 12 4.0%
Ile[I] 16 5.4%
Leu[L] 24 8.1%
Lys[K] 20 6.7%
Met[M] 1 0.3%
Phe[F] 5 1.7%
Pro[P] 10 3.4%
Ser[S] 26 8.8%
Thr[T] 18 6.1%
Trp[W] 15 5.1%
Tyr[Y] 7 2.4%
Val[V] 27 9.1%
Total Length 297

Instability index
Instability index (II) 28.10
This classifies the protein as stable

Atomic composition
Carbon 1485
Hydrogen 2274
Nitrogen 400
Oxygen 449
Sulfur 4
Total number of atoms 4612
Formula = C1485H2274N400O449S4

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 93055 M-1 cm-1
assuming NO Cys residues appear as half cystines 92930 M-1 cm-1
assuming all Cys residues are reduced 92930 M-1 cm-1
assuming all pairs of Cys residues form cystines 93055 M-1 cm-1

Aliphatic index
Aliphatic index 86.63

Coding Region Translation Calculations
Codon Bias 0.322
Codon Adaptation Index 0.263
Frequency of Optimal Codons 0.598
Hydropathicity of Protein -0.343
Aromaticity Score 0.091