POP4/YBR257W 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] 8 2.9%
Arg[R] 16 5.7%
Asn[N] 18 6.5%
Asp[D] 22 7.9%
Cys[C] 6 2.2%
Gln[Q] 14 5.0%
Glu[E] 15 5.4%
Gly[G] 10 3.6%
His[H] 2 0.7%
Ile[I] 23 8.2%
Leu[L] 34 12.2%
Lys[K] 34 12.2%
Met[M] 5 1.8%
Phe[F] 12 4.3%
Pro[P] 8 2.9%
Ser[S] 15 5.4%
Thr[T] 14 5.0%
Trp[W] 2 0.7%
Tyr[Y] 13 4.7%
Val[V] 8 2.9%
Total Length 279

Instability index
Instability index (II) 36.94
This classifies the protein as stable

Atomic composition
Carbon 1474
Hydrogen 2369
Nitrogen 399
Oxygen 428
Sulfur 11
Total number of atoms 4681
Formula = C1474H2369N399O428S11

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 30745 M-1 cm-1
assuming NO Cys residues appear as half cystines 30370 M-1 cm-1
assuming all Cys residues are reduced 30370 M-1 cm-1
assuming all pairs of Cys residues form cystines 30745 M-1 cm-1

Aliphatic index
Aliphatic index 90.86

Coding Region Translation Calculations
Codon Bias -0.033
Codon Adaptation Index 0.126
Frequency of Optimal Codons 0.401
Hydropathicity of Protein -0.613
Aromaticity Score 0.097