PSD2/YGR170W 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] 52 4.6%
Arg[R] 63 5.5%
Asn[N] 78 6.9%
Asp[D] 68 6.0%
Cys[C] 15 1.3%
Gln[Q] 29 2.5%
Glu[E] 79 6.9%
Gly[G] 47 4.1%
His[H] 28 2.5%
Ile[I] 82 7.2%
Leu[L] 87 7.6%
Lys[K] 87 7.6%
Met[M] 21 1.8%
Phe[F] 60 5.3%
Pro[P] 50 4.4%
Ser[S] 119 10.5%
Thr[T] 68 6.0%
Trp[W] 13 1.1%
Tyr[Y] 36 3.2%
Val[V] 56 4.9%
Total Length 1138

Instability index
Instability index (II) 43.88
This classifies the protein as unstable

Atomic composition
Carbon 5772
Hydrogen 9034
Nitrogen 1590
Oxygen 1763
Sulfur 36
Total number of atoms 18195
Formula = C5772H9034N1590O1763S36

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 126015 M-1 cm-1
assuming NO Cys residues appear as half cystines 125140 M-1 cm-1
assuming all Cys residues are reduced 125140 M-1 cm-1
assuming all pairs of Cys residues form cystines 126015 M-1 cm-1

Aliphatic index
Aliphatic index 76.76

Coding Region Translation Calculations
Codon Bias 0.004
Codon Adaptation Index 0.130
Frequency of Optimal Codons 0.418
Hydropathicity of Protein -0.552
Aromaticity Score 0.096