STE20/YHL007C 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] 54 5.8%
Arg[R] 30 3.2%
Asn[N] 72 7.7%
Asp[D] 55 5.9%
Cys[C] 7 0.7%
Gln[Q] 30 3.2%
Glu[E] 57 6.1%
Gly[G] 45 4.8%
His[H] 21 2.2%
Ile[I] 49 5.2%
Leu[L] 62 6.6%
Lys[K] 80 8.5%
Met[M] 23 2.4%
Phe[F] 17 1.8%
Pro[P] 67 7.1%
Ser[S] 120 12.8%
Thr[T] 78 8.3%
Trp[W] 5 0.5%
Tyr[Y] 18 1.9%
Val[V] 49 5.2%
Total Length 939

Instability index
Instability index (II) 48.76
This classifies the protein as unstable

Atomic composition
Carbon 4405
Hydrogen 7104
Nitrogen 1258
Oxygen 1482
Sulfur 30
Total number of atoms 14279
Formula = C4405H7104N1258O1482S30

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 54695 M-1 cm-1
assuming NO Cys residues appear as half cystines 54320 M-1 cm-1
assuming all Cys residues are reduced 54320 M-1 cm-1
assuming all pairs of Cys residues form cystines 54695 M-1 cm-1

Aliphatic index
Aliphatic index 66.99

Coding Region Translation Calculations
Codon Bias 0.094
Codon Adaptation Index 0.152
Frequency of Optimal Codons 0.463
Hydropathicity of Protein -0.744
Aromaticity Score 0.043