SEC5/YDR166C 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] 25 2.6%
Arg[R] 33 3.4%
Asn[N] 91 9.4%
Asp[D] 51 5.3%
Cys[C] 14 1.4%
Gln[Q] 57 5.9%
Glu[E] 67 6.9%
Gly[G] 32 3.3%
His[H] 11 1.1%
Ile[I] 93 9.6%
Leu[L] 109 11.2%
Lys[K] 72 7.4%
Met[M] 14 1.4%
Phe[F] 52 5.4%
Pro[P] 27 2.8%
Ser[S] 95 9.8%
Thr[T] 54 5.6%
Trp[W] 10 1.0%
Tyr[Y] 32 3.3%
Val[V] 32 3.3%
Total Length 971

Instability index
Instability index (II) 44.25
This classifies the protein as unstable

Atomic composition
Carbon 5009
Hydrogen 7890
Nitrogen 1322
Oxygen 1537
Sulfur 28
Total number of atoms 15786
Formula = C5009H7890N1322O1537S28

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 103555 M-1 cm-1
assuming NO Cys residues appear as half cystines 102680 M-1 cm-1
assuming all Cys residues are reduced 102680 M-1 cm-1
assuming all pairs of Cys residues form cystines 103555 M-1 cm-1

Aliphatic index
Aliphatic index 93.26

Coding Region Translation Calculations
Codon Bias 0.063
Codon Adaptation Index 0.160
Frequency of Optimal Codons 0.464
Hydropathicity of Protein -0.408
Aromaticity Score 0.097