ACE2/YLR131C 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] 23 3.0%
Arg[R] 38 4.9%
Asn[N] 73 9.5%
Asp[D] 54 7.0%
Cys[C] 8 1.0%
Gln[Q] 33 4.3%
Glu[E] 38 4.9%
Gly[G] 36 4.7%
His[H] 28 3.6%
Ile[I] 41 5.3%
Leu[L] 71 9.2%
Lys[K] 59 7.7%
Met[M] 15 1.9%
Phe[F] 17 2.2%
Pro[P] 62 8.1%
Ser[S] 73 9.5%
Thr[T] 49 6.4%
Trp[W] 2 0.3%
Tyr[Y] 20 2.6%
Val[V] 30 3.9%
Total Length 770

Instability index
Instability index (II) 53.52
This classifies the protein as unstable

Atomic composition
Carbon 3755
Hydrogen 5995
Nitrogen 1107
Oxygen 1203
Sulfur 23
Total number of atoms 12083
Formula = C3755H5995N1107O1203S23

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 41300 M-1 cm-1
assuming NO Cys residues appear as half cystines 40800 M-1 cm-1
assuming all Cys residues are reduced 40800 M-1 cm-1
assuming all pairs of Cys residues form cystines 41300 M-1 cm-1

Aliphatic index
Aliphatic index 71.01

Coding Region Translation Calculations
Codon Bias 0.001
Codon Adaptation Index 0.119
Frequency of Optimal Codons 0.405
Hydropathicity of Protein -0.909
Aromaticity Score 0.051