SSM4/YIL030C 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] 75 5.7%
Arg[R] 61 4.6%
Asn[N] 75 5.7%
Asp[D] 74 5.6%
Cys[C] 18 1.4%
Gln[Q] 41 3.1%
Glu[E] 71 5.4%
Gly[G] 60 4.5%
His[H] 29 2.2%
Ile[I] 109 8.3%
Leu[L] 140 10.6%
Lys[K] 64 4.9%
Met[M] 38 2.9%
Phe[F] 88 6.7%
Pro[P] 64 4.9%
Ser[S] 91 6.9%
Thr[T] 59 4.5%
Trp[W] 18 1.4%
Tyr[Y] 59 4.5%
Val[V] 85 6.4%
Total Length 1319

Instability index
Instability index (II) 38.43
This classifies the protein as stable

Atomic composition
Carbon 6938
Hydrogen 10660
Nitrogen 1758
Oxygen 1935
Sulfur 56
Total number of atoms 21347
Formula = C6938H10660N1758O1935S56

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 188035 M-1 cm-1
assuming NO Cys residues appear as half cystines 186910 M-1 cm-1
assuming all Cys residues are reduced 186910 M-1 cm-1
assuming all pairs of Cys residues form cystines 188035 M-1 cm-1

Aliphatic index
Aliphatic index 98.00

Coding Region Translation Calculations
Codon Bias 0.122
Codon Adaptation Index 0.169
Frequency of Optimal Codons 0.482
Hydropathicity of Protein 0.011
Aromaticity Score 0.125