SAE2/YGL175C 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] 12 3.5%
Arg[R] 22 6.4%
Asn[N] 28 8.1%
Asp[D] 23 6.7%
Cys[C] 5 1.4%
Gln[Q] 16 4.6%
Glu[E] 33 9.6%
Gly[G] 11 3.2%
His[H] 6 1.7%
Ile[I] 16 4.6%
Leu[L] 34 9.9%
Lys[K] 31 9.0%
Met[M] 3 0.9%
Phe[F] 16 4.6%
Pro[P] 18 5.2%
Ser[S] 28 8.1%
Thr[T] 14 4.1%
Trp[W] 2 0.6%
Tyr[Y] 10 2.9%
Val[V] 17 4.9%
Total Length 345

Instability index
Instability index (II) 57.86
This classifies the protein as unstable

Atomic composition
Carbon 1762
Hydrogen 2788
Nitrogen 500
Oxygen 554
Sulfur 8
Total number of atoms 5612
Formula = C1762H2788N500O554S8

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 26150 M-1 cm-1
assuming NO Cys residues appear as half cystines 25900 M-1 cm-1
assuming all Cys residues are reduced 25900 M-1 cm-1
assuming all pairs of Cys residues form cystines 26150 M-1 cm-1

Aliphatic index
Aliphatic index 74.29

Coding Region Translation Calculations
Codon Bias 0.034
Codon Adaptation Index 0.133
Frequency of Optimal Codons 0.429
Hydropathicity of Protein -0.905
Aromaticity Score 0.081