SEA4/YBL104C 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] 59 5.7%
Arg[R] 64 6.2%
Asn[N] 85 8.2%
Asp[D] 75 7.2%
Cys[C] 23 2.2%
Gln[Q] 29 2.8%
Glu[E] 62 6.0%
Gly[G] 60 5.8%
His[H] 19 1.8%
Ile[I] 72 6.9%
Leu[L] 85 8.2%
Lys[K] 57 5.5%
Met[M] 23 2.2%
Phe[F] 33 3.2%
Pro[P] 36 3.5%
Ser[S] 97 9.3%
Thr[T] 55 5.3%
Trp[W] 19 1.8%
Tyr[Y] 40 3.9%
Val[V] 45 4.3%
Total Length 1038

Instability index
Instability index (II) 39.55
This classifies the protein as stable

Atomic composition
Carbon 5140
Hydrogen 8036
Nitrogen 1458
Oxygen 1619
Sulfur 46
Total number of atoms 16299
Formula = C5140H8036N1458O1619S46

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 165475 M-1 cm-1
assuming NO Cys residues appear as half cystines 164100 M-1 cm-1
assuming all Cys residues are reduced 164100 M-1 cm-1
assuming all pairs of Cys residues form cystines 165475 M-1 cm-1

Aliphatic index
Aliphatic index 77.24

Coding Region Translation Calculations
Codon Bias 0.064
Codon Adaptation Index 0.142
Frequency of Optimal Codons 0.445
Hydropathicity of Protein -0.559
Aromaticity Score 0.089