SSA4/YER103W 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] 65 10.1%
Arg[R] 28 4.4%
Asn[N] 33 5.1%
Asp[D] 45 7.0%
Cys[C] 2 0.3%
Gln[Q] 23 3.6%
Glu[E] 53 8.3%
Gly[G] 49 7.6%
His[H] 5 0.8%
Ile[I] 37 5.8%
Leu[L] 46 7.2%
Lys[K] 50 7.8%
Met[M] 7 1.1%
Phe[F] 28 4.4%
Pro[P] 27 4.2%
Ser[S] 39 6.1%
Thr[T] 48 7.5%
Trp[W] 1 0.2%
Tyr[Y] 12 1.9%
Val[V] 44 6.9%
Total Length 642

Instability index
Instability index (II) 33.64
This classifies the protein as stable

Atomic composition
Carbon 3057
Hydrogen 4895
Nitrogen 843
Oxygen 994
Sulfur 9
Total number of atoms 9798
Formula = C3057H4895N843O994S9

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 23505 M-1 cm-1
assuming NO Cys residues appear as half cystines 23380 M-1 cm-1
assuming all Cys residues are reduced 23380 M-1 cm-1
assuming all pairs of Cys residues form cystines 23505 M-1 cm-1

Aliphatic index
Aliphatic index 80.42

Coding Region Translation Calculations
Codon Bias 0.176
Codon Adaptation Index 0.184
Frequency of Optimal Codons 0.509
Hydropathicity of Protein -0.437
Aromaticity Score 0.064