SAH1/YER043C 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] 45 10.0%
Arg[R] 15 3.3%
Asn[N] 18 4.0%
Asp[D] 23 5.1%
Cys[C] 11 2.4%
Gln[Q] 14 3.1%
Glu[E] 32 7.1%
Gly[G] 37 8.2%
His[H] 16 3.6%
Ile[I] 30 6.7%
Leu[L] 41 9.1%
Lys[K] 29 6.5%
Met[M] 12 2.7%
Phe[F] 17 3.8%
Pro[P] 13 2.9%
Ser[S] 22 4.9%
Thr[T] 21 4.7%
Trp[W] 4 0.9%
Tyr[Y] 12 2.7%
Val[V] 37 8.2%
Total Length 449

Instability index
Instability index (II) 35.83
This classifies the protein as stable

Atomic composition
Carbon 2187
Hydrogen 3463
Nitrogen 591
Oxygen 647
Sulfur 23
Total number of atoms 6911
Formula = C2187H3463N591O647S23

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 40505 M-1 cm-1
assuming NO Cys residues appear as half cystines 39880 M-1 cm-1
assuming all Cys residues are reduced 39880 M-1 cm-1
assuming all pairs of Cys residues form cystines 40505 M-1 cm-1

Aliphatic index
Aliphatic index 95.59

Coding Region Translation Calculations
Codon Bias 0.662
Codon Adaptation Index 0.641
Frequency of Optimal Codons 0.799
Hydropathicity of Protein 0.004
Aromaticity Score 0.073