PTA1/YAL043C 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] 38 4.8%
Arg[R] 29 3.7%
Asn[N] 40 5.1%
Asp[D] 48 6.1%
Cys[C] 4 0.5%
Gln[Q] 40 5.1%
Glu[E] 51 6.5%
Gly[G] 26 3.3%
His[H] 12 1.5%
Ile[I] 46 5.9%
Leu[L] 104 13.2%
Lys[K] 61 7.8%
Met[M] 21 2.7%
Phe[F] 29 3.7%
Pro[P] 36 4.6%
Ser[S] 92 11.7%
Thr[T] 47 6.0%
Trp[W] 7 0.9%
Tyr[Y] 18 2.3%
Val[V] 36 4.6%
Total Length 785

Instability index
Instability index (II) 50.59
This classifies the protein as unstable

Atomic composition
Carbon 3926
Hydrogen 6308
Nitrogen 1044
Oxygen 1221
Sulfur 25
Total number of atoms 12524
Formula = C3926H6308N1044O1221S25

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 65570 M-1 cm-1
assuming NO Cys residues appear as half cystines 65320 M-1 cm-1
assuming all Cys residues are reduced 65320 M-1 cm-1
assuming all pairs of Cys residues form cystines 65570 M-1 cm-1

Aliphatic index
Aliphatic index 92.66

Coding Region Translation Calculations
Codon Bias 0.133
Codon Adaptation Index 0.130
Frequency of Optimal Codons 0.478
Hydropathicity of Protein -0.363
Aromaticity Score 0.069