SHE2/YKL130C 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] 13 5.3%
Arg[R] 7 2.8%
Asn[N] 13 5.3%
Asp[D] 18 7.3%
Cys[C] 4 1.6%
Gln[Q] 7 2.8%
Glu[E] 21 8.5%
Gly[G] 7 2.8%
His[H] 5 2.0%
Ile[I] 18 7.3%
Leu[L] 33 13.4%
Lys[K] 19 7.7%
Met[M] 3 1.2%
Phe[F] 15 6.1%
Pro[P] 4 1.6%
Ser[S] 19 7.7%
Thr[T] 15 6.1%
Trp[W] 3 1.2%
Tyr[Y] 7 2.8%
Val[V] 15 6.1%
Total Length 246

Instability index
Instability index (II) 47.14
This classifies the protein as unstable

Atomic composition
Carbon 1279
Hydrogen 2005
Nitrogen 319
Oxygen 386
Sulfur 7
Total number of atoms 3996
Formula = C1279H2005N319O386S7

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 27180 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 27180 M-1 cm-1

Aliphatic index
Aliphatic index 103.82

Coding Region Translation Calculations
Codon Bias 0.075
Codon Adaptation Index 0.164
Frequency of Optimal Codons 0.463
Hydropathicity of Protein -0.099
Aromaticity Score 0.102