SRB8/YCR081W 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] 42 2.9%
Arg[R] 35 2.5%
Asn[N] 104 7.3%
Asp[D] 86 6.0%
Cys[C] 22 1.5%
Gln[Q] 63 4.4%
Glu[E] 85 6.0%
Gly[G] 28 2.0%
His[H] 40 2.8%
Ile[I] 143 10.0%
Leu[L] 163 11.4%
Lys[K] 115 8.1%
Met[M] 37 2.6%
Phe[F] 89 6.2%
Pro[P] 45 3.2%
Ser[S] 117 8.2%
Thr[T] 73 5.1%
Trp[W] 18 1.3%
Tyr[Y] 55 3.9%
Val[V] 67 4.7%
Total Length 1427

Instability index
Instability index (II) 36.43
This classifies the protein as stable

Atomic composition
Carbon 7606
Hydrogen 11828
Nitrogen 1912
Oxygen 2182
Sulfur 59
Total number of atoms 23587
Formula = C7606H11828N1912O2182S59

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 182325 M-1 cm-1
assuming NO Cys residues appear as half cystines 180950 M-1 cm-1
assuming all Cys residues are reduced 180950 M-1 cm-1
assuming all pairs of Cys residues form cystines 182325 M-1 cm-1

Aliphatic index
Aliphatic index 100.19

Coding Region Translation Calculations
Codon Bias 0.042
Codon Adaptation Index 0.155
Frequency of Optimal Codons 0.458
Hydropathicity of Protein -0.167
Aromaticity Score 0.114