SEC53/YFL045C 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] 11 4.3%
Arg[R] 13 5.1%
Asn[N] 11 4.3%
Asp[D] 16 6.3%
Cys[C] 3 1.2%
Gln[Q] 7 2.8%
Glu[E] 25 9.8%
Gly[G] 20 7.9%
His[H] 4 1.6%
Ile[I] 14 5.5%
Leu[L] 25 9.8%
Lys[K] 19 7.5%
Met[M] 3 1.2%
Phe[F] 20 7.9%
Pro[P] 8 3.1%
Ser[S] 15 5.9%
Thr[T] 14 5.5%
Trp[W] 2 0.8%
Tyr[Y] 9 3.5%
Val[V] 15 5.9%
Total Length 254

Instability index
Instability index (II) 41.61
This classifies the protein as unstable

Atomic composition
Carbon 1314
Hydrogen 2022
Nitrogen 340
Oxygen 393
Sulfur 6
Total number of atoms 4075
Formula = C1314H2022N340O393S6

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 24535 M-1 cm-1
assuming NO Cys residues appear as half cystines 24410 M-1 cm-1
assuming all Cys residues are reduced 24410 M-1 cm-1
assuming all pairs of Cys residues form cystines 24535 M-1 cm-1

Aliphatic index
Aliphatic index 81.34

Coding Region Translation Calculations
Codon Bias 0.585
Codon Adaptation Index 0.540
Frequency of Optimal Codons 0.755
Hydropathicity of Protein -0.386
Aromaticity Score 0.122