SAY1/YGR263C 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] 22 5.2%
Arg[R] 15 3.5%
Asn[N] 28 6.6%
Asp[D] 23 5.4%
Cys[C] 9 2.1%
Gln[Q] 18 4.2%
Glu[E] 19 4.5%
Gly[G] 20 4.7%
His[H] 12 2.8%
Ile[I] 29 6.8%
Leu[L] 35 8.3%
Lys[K] 27 6.4%
Met[M] 15 3.5%
Phe[F] 28 6.6%
Pro[P] 20 4.7%
Ser[S] 31 7.3%
Thr[T] 21 5.0%
Trp[W] 5 1.2%
Tyr[Y] 18 4.2%
Val[V] 29 6.8%
Total Length 424

Instability index
Instability index (II) 52.68
This classifies the protein as unstable

Atomic composition
Carbon 2196
Hydrogen 3371
Nitrogen 571
Oxygen 625
Sulfur 24
Total number of atoms 6787
Formula = C2196H3371N571O625S24

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 54820 M-1 cm-1
assuming NO Cys residues appear as half cystines 54320 M-1 cm-1
assuming all Cys residues are reduced 54320 M-1 cm-1
assuming all pairs of Cys residues form cystines 54820 M-1 cm-1

Aliphatic index
Aliphatic index 83.89

Coding Region Translation Calculations
Codon Bias 0.041
Codon Adaptation Index 0.148
Frequency of Optimal Codons 0.443
Hydropathicity of Protein -0.171
Aromaticity Score 0.120