PEP1/YBL017C 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] 72 4.6%
Arg[R] 54 3.4%
Asn[N] 92 5.8%
Asp[D] 131 8.3%
Cys[C] 37 2.3%
Gln[Q] 42 2.7%
Glu[E] 115 7.3%
Gly[G] 112 7.1%
His[H] 24 1.5%
Ile[I] 98 6.2%
Leu[L] 108 6.8%
Lys[K] 109 6.9%
Met[M] 28 1.8%
Phe[F] 99 6.3%
Pro[P] 57 3.6%
Ser[S] 131 8.3%
Thr[T] 112 7.1%
Trp[W] 17 1.1%
Tyr[Y] 62 3.9%
Val[V] 79 5.0%
Total Length 1579

Instability index
Instability index (II) 35.40
This classifies the protein as stable

Atomic composition
Carbon 7883
Hydrogen 12041
Nitrogen 2049
Oxygen 2511
Sulfur 65
Total number of atoms 24549
Formula = C7883H12041N2049O2511S65

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 188130 M-1 cm-1
assuming NO Cys residues appear as half cystines 185880 M-1 cm-1
assuming all Cys residues are reduced 185880 M-1 cm-1
assuming all pairs of Cys residues form cystines 188130 M-1 cm-1

Aliphatic index
Aliphatic index 69.95

Coding Region Translation Calculations
Codon Bias 0.061
Codon Adaptation Index 0.163
Frequency of Optimal Codons 0.457
Hydropathicity of Protein -0.478
Aromaticity Score 0.113