SCO2/YBR024W 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] 15 5.0%
Arg[R] 23 7.6%
Asn[N] 12 4.0%
Asp[D] 21 7.0%
Cys[C] 7 2.3%
Gln[Q] 11 3.7%
Glu[E] 20 6.6%
Gly[G] 19 6.3%
His[H] 4 1.3%
Ile[I] 18 6.0%
Leu[L] 29 9.6%
Lys[K] 21 7.0%
Met[M] 1 0.3%
Phe[F] 20 6.6%
Pro[P] 16 5.3%
Ser[S] 23 7.6%
Thr[T] 12 4.0%
Trp[W] 3 1.0%
Tyr[Y] 17 5.6%
Val[V] 9 3.0%
Total Length 301

Instability index
Instability index (II) 50.62
This classifies the protein as unstable

Atomic composition
Carbon 1574
Hydrogen 2411
Nitrogen 425
Oxygen 459
Sulfur 8
Total number of atoms 4877
Formula = C1574H2411N425O459S8

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 42205 M-1 cm-1
assuming NO Cys residues appear as half cystines 41830 M-1 cm-1
assuming all Cys residues are reduced 41830 M-1 cm-1
assuming all pairs of Cys residues form cystines 42205 M-1 cm-1

Aliphatic index
Aliphatic index 74.55

Coding Region Translation Calculations
Codon Bias 0.096
Codon Adaptation Index 0.155
Frequency of Optimal Codons 0.455
Hydropathicity of Protein -0.583
Aromaticity Score 0.133