NPA3/YJR072C 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] 25 6.5%
Arg[R] 14 3.6%
Asn[N] 22 5.7%
Asp[D] 30 7.8%
Cys[C] 6 1.6%
Gln[Q] 17 4.4%
Glu[E] 30 7.8%
Gly[G] 22 5.7%
His[H] 1 0.3%
Ile[I] 24 6.2%
Leu[L] 27 7.0%
Lys[K] 30 7.8%
Met[M] 15 3.9%
Phe[F] 16 4.2%
Pro[P] 12 3.1%
Ser[S] 34 8.8%
Thr[T] 20 5.2%
Trp[W] 2 0.5%
Tyr[Y] 15 3.9%
Val[V] 23 6.0%
Total Length 385

Instability index
Instability index (II) 37.16
This classifies the protein as stable

Atomic composition
Carbon 1889
Hydrogen 2982
Nitrogen 500
Oxygen 614
Sulfur 21
Total number of atoms 6006
Formula = C1889H2982N500O614S21

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 33725 M-1 cm-1
assuming NO Cys residues appear as half cystines 33350 M-1 cm-1
assuming all Cys residues are reduced 33350 M-1 cm-1
assuming all pairs of Cys residues form cystines 33725 M-1 cm-1

Aliphatic index
Aliphatic index 75.48

Coding Region Translation Calculations
Codon Bias 0.159
Codon Adaptation Index 0.171
Frequency of Optimal Codons 0.511
Hydropathicity of Protein -0.467
Aromaticity Score 0.086