SHS1/YDL225W 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] 26 4.7%
Arg[R] 32 5.8%
Asn[N] 41 7.4%
Asp[D] 29 5.3%
Cys[C] 2 0.4%
Gln[Q] 25 4.5%
Glu[E] 55 10.0%
Gly[G] 24 4.4%
His[H] 9 1.6%
Ile[I] 36 6.5%
Leu[L] 49 8.9%
Lys[K] 38 6.9%
Met[M] 10 1.8%
Phe[F] 21 3.8%
Pro[P] 25 4.5%
Ser[S] 54 9.8%
Thr[T] 34 6.2%
Trp[W] 1 0.2%
Tyr[Y] 16 2.9%
Val[V] 24 4.4%
Total Length 551

Instability index
Instability index (II) 42.84
This classifies the protein as unstable

Atomic composition
Carbon 2733
Hydrogen 4360
Nitrogen 770
Oxygen 890
Sulfur 12
Total number of atoms 8765
Formula = C2733H4360N770O890S12

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 29465 M-1 cm-1
assuming NO Cys residues appear as half cystines 29340 M-1 cm-1
assuming all Cys residues are reduced 29340 M-1 cm-1
assuming all pairs of Cys residues form cystines 29465 M-1 cm-1

Aliphatic index
Aliphatic index 77.51

Coding Region Translation Calculations
Codon Bias 0.184
Codon Adaptation Index 0.190
Frequency of Optimal Codons 0.519
Hydropathicity of Protein -0.736
Aromaticity Score 0.069