SPF1/YEL031W 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] 93 7.7%
Arg[R] 44 3.6%
Asn[N] 46 3.8%
Asp[D] 61 5.0%
Cys[C] 13 1.1%
Gln[Q] 41 3.4%
Glu[E] 75 6.2%
Gly[G] 72 5.9%
His[H] 21 1.7%
Ile[I] 83 6.8%
Leu[L] 136 11.2%
Lys[K] 82 6.7%
Met[M] 31 2.6%
Phe[F] 69 5.7%
Pro[P] 63 5.2%
Ser[S] 89 7.3%
Thr[T] 68 5.6%
Trp[W] 12 1.0%
Tyr[Y] 35 2.9%
Val[V] 81 6.7%
Total Length 1215

Instability index
Instability index (II) 35.94
This classifies the protein as stable

Atomic composition
Carbon 6148
Hydrogen 9676
Nitrogen 1570
Oxygen 1767
Sulfur 44
Total number of atoms 19205
Formula = C6148H9676N1570O1767S44

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 118900 M-1 cm-1
assuming NO Cys residues appear as half cystines 118150 M-1 cm-1
assuming all Cys residues are reduced 118150 M-1 cm-1
assuming all pairs of Cys residues form cystines 118900 M-1 cm-1

Aliphatic index
Aliphatic index 97.28

Coding Region Translation Calculations
Codon Bias 0.278
Codon Adaptation Index 0.257
Frequency of Optimal Codons 0.567
Hydropathicity of Protein 0.010
Aromaticity Score 0.095