SIN4/YNL236W 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] 45 4.6%
Arg[R] 33 3.4%
Asn[N] 63 6.5%
Asp[D] 46 4.7%
Cys[C] 14 1.4%
Gln[Q] 46 4.7%
Glu[E] 49 5.0%
Gly[G] 32 3.3%
His[H] 20 2.1%
Ile[I] 75 7.7%
Leu[L] 98 10.1%
Lys[K] 74 7.6%
Met[M] 21 2.2%
Phe[F] 54 5.5%
Pro[P] 46 4.7%
Ser[S] 96 9.9%
Thr[T] 62 6.4%
Trp[W] 13 1.3%
Tyr[Y] 36 3.7%
Val[V] 51 5.2%
Total Length 974

Instability index
Instability index (II) 46.19
This classifies the protein as unstable

Atomic composition
Carbon 5031
Hydrogen 7863
Nitrogen 1309
Oxygen 1468
Sulfur 35
Total number of atoms 15706
Formula = C5031H7863N1309O1468S35

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 126015 M-1 cm-1
assuming NO Cys residues appear as half cystines 125140 M-1 cm-1
assuming all Cys residues are reduced 125140 M-1 cm-1
assuming all pairs of Cys residues form cystines 126015 M-1 cm-1

Aliphatic index
Aliphatic index 89.08

Coding Region Translation Calculations
Codon Bias 0.005
Codon Adaptation Index 0.126
Frequency of Optimal Codons 0.420
Hydropathicity of Protein -0.256
Aromaticity Score 0.106