SRS2/YJL092W 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] 64 5.5%
Arg[R] 69 5.9%
Asn[N] 69 5.9%
Asp[D] 80 6.8%
Cys[C] 8 0.7%
Gln[Q] 43 3.7%
Glu[E] 83 7.1%
Gly[G] 42 3.6%
His[H] 25 2.1%
Ile[I] 88 7.5%
Leu[L] 123 10.5%
Lys[K] 108 9.2%
Met[M] 21 1.8%
Phe[F] 49 4.2%
Pro[P] 49 4.2%
Ser[S] 106 9.0%
Thr[T] 62 5.3%
Trp[W] 6 0.5%
Tyr[Y] 33 2.8%
Val[V] 46 3.9%
Total Length 1174

Instability index
Instability index (II) 47.89
This classifies the protein as unstable

Atomic composition
Carbon 5954
Hydrogen 9555
Nitrogen 1657
Oxygen 1814
Sulfur 29
Total number of atoms 19009
Formula = C5954H9555N1657O1814S29

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 82670 M-1 cm-1
assuming NO Cys residues appear as half cystines 82170 M-1 cm-1
assuming all Cys residues are reduced 82170 M-1 cm-1
assuming all pairs of Cys residues form cystines 82670 M-1 cm-1

Aliphatic index
Aliphatic index 86.91

Coding Region Translation Calculations
Codon Bias 0.017
Codon Adaptation Index 0.128
Frequency of Optimal Codons 0.418
Hydropathicity of Protein -0.577
Aromaticity Score 0.075