LEU3/YLR451W 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] 51 5.8%
Arg[R] 44 5.0%
Asn[N] 60 6.8%
Asp[D] 41 4.6%
Cys[C] 14 1.6%
Gln[Q] 33 3.7%
Glu[E] 70 7.9%
Gly[G] 31 3.5%
His[H] 15 1.7%
Ile[I] 53 6.0%
Leu[L] 78 8.8%
Lys[K] 54 6.1%
Met[M] 23 2.6%
Phe[F] 34 3.8%
Pro[P] 39 4.4%
Ser[S] 95 10.7%
Thr[T] 60 6.8%
Trp[W] 11 1.2%
Tyr[Y] 26 2.9%
Val[V] 54 6.1%
Total Length 886

Instability index
Instability index (II) 48.72
This classifies the protein as unstable

Atomic composition
Carbon 4406
Hydrogen 6972
Nitrogen 1206
Oxygen 1383
Sulfur 37
Total number of atoms 14004
Formula = C4406H6972N1206O1383S37

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 100115 M-1 cm-1
assuming NO Cys residues appear as half cystines 99240 M-1 cm-1
assuming all Cys residues are reduced 99240 M-1 cm-1
assuming all pairs of Cys residues form cystines 100115 M-1 cm-1

Aliphatic index
Aliphatic index 81.09

Coding Region Translation Calculations
Codon Bias 0.004
Codon Adaptation Index 0.118
Frequency of Optimal Codons 0.411
Hydropathicity of Protein -0.429
Aromaticity Score 0.080