ISF1/YMR081C 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] 15 4.4%
Arg[R] 20 5.9%
Asn[N] 38 11.2%
Asp[D] 13 3.8%
Cys[C] 6 1.8%
Gln[Q] 9 2.7%
Glu[E] 14 4.1%
Gly[G] 13 3.8%
His[H] 17 5.0%
Ile[I] 13 3.8%
Leu[L] 29 8.6%
Lys[K] 13 3.8%
Met[M] 1 0.3%
Phe[F] 11 3.3%
Pro[P] 17 5.0%
Ser[S] 73 21.6%
Thr[T] 16 4.7%
Trp[W] 0 0.0%
Tyr[Y] 10 3.0%
Val[V] 10 3.0%
Total Length 338

Instability index
Instability index (II) 58.16
This classifies the protein as unstable

Atomic composition
Carbon 1572
Hydrogen 2470
Nitrogen 492
Oxygen 539
Sulfur 7
Total number of atoms 5080
Formula = C1572H2470N492O539S7

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 15275 M-1 cm-1
assuming NO Cys residues appear as half cystines 14900 M-1 cm-1
assuming all Cys residues are reduced 14900 M-1 cm-1
assuming all pairs of Cys residues form cystines 15275 M-1 cm-1

Aliphatic index
Aliphatic index 61.48

Coding Region Translation Calculations
Codon Bias 0.127
Codon Adaptation Index 0.139
Frequency of Optimal Codons 0.466
Hydropathicity of Protein -0.839
Aromaticity Score 0.062