SIP2/YGL208W 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] 17 4.1%
Arg[R] 22 5.3%
Asn[N] 18 4.3%
Asp[D] 32 7.7%
Cys[C] 4 1.0%
Gln[Q] 24 5.8%
Glu[E] 27 6.5%
Gly[G] 21 5.1%
His[H] 8 1.9%
Ile[I] 21 5.1%
Leu[L] 26 6.3%
Lys[K] 27 6.5%
Met[M] 10 2.4%
Phe[F] 10 2.4%
Pro[P] 32 7.7%
Ser[S] 44 10.6%
Thr[T] 34 8.2%
Trp[W] 3 0.7%
Tyr[Y] 12 2.9%
Val[V] 23 5.5%
Total Length 415

Instability index
Instability index (II) 49.65
This classifies the protein as unstable

Atomic composition
Carbon 2008
Hydrogen 3187
Nitrogen 569
Oxygen 666
Sulfur 14
Total number of atoms 6444
Formula = C2008H3187N569O666S14

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 34630 M-1 cm-1
assuming NO Cys residues appear as half cystines 34380 M-1 cm-1
assuming all Cys residues are reduced 34380 M-1 cm-1
assuming all pairs of Cys residues form cystines 34630 M-1 cm-1

Aliphatic index
Aliphatic index 64.34

Coding Region Translation Calculations
Codon Bias 0.001
Codon Adaptation Index 0.114
Frequency of Optimal Codons 0.408
Hydropathicity of Protein -0.826
Aromaticity Score 0.060