PMI40/YER003C 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] 32 7.5%
Arg[R] 15 3.5%
Asn[N] 22 5.1%
Asp[D] 31 7.2%
Cys[C] 5 1.2%
Gln[Q] 19 4.4%
Glu[E] 31 7.2%
Gly[G] 24 5.6%
His[H] 11 2.6%
Ile[I] 26 6.1%
Leu[L] 36 8.4%
Lys[K] 37 8.6%
Met[M] 10 2.3%
Phe[F] 25 5.8%
Pro[P] 28 6.5%
Ser[S] 30 7.0%
Thr[T] 13 3.0%
Trp[W] 2 0.5%
Tyr[Y] 11 2.6%
Val[V] 21 4.9%
Total Length 429

Instability index
Instability index (II) 44.72
This classifies the protein as unstable

Atomic composition
Carbon 2154
Hydrogen 3358
Nitrogen 576
Oxygen 649
Sulfur 15
Total number of atoms 6752
Formula = C2154H3358N576O649S15

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 27640 M-1 cm-1
assuming NO Cys residues appear as half cystines 27390 M-1 cm-1
assuming all Cys residues are reduced 27390 M-1 cm-1
assuming all pairs of Cys residues form cystines 27640 M-1 cm-1

Aliphatic index
Aliphatic index 78.02

Coding Region Translation Calculations
Codon Bias 0.288
Codon Adaptation Index 0.288
Frequency of Optimal Codons 0.578
Hydropathicity of Protein -0.490
Aromaticity Score 0.089