NHX1/YDR456W 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] 37 5.8%
Arg[R] 17 2.7%
Asn[N] 35 5.5%
Asp[D] 33 5.2%
Cys[C] 7 1.1%
Gln[Q] 19 3.0%
Glu[E] 26 4.1%
Gly[G] 38 6.0%
His[H] 8 1.3%
Ile[I] 63 10.0%
Leu[L] 76 12.0%
Lys[K] 18 2.8%
Met[M] 16 2.5%
Phe[F] 41 6.5%
Pro[P] 28 4.4%
Ser[S] 60 9.5%
Thr[T] 38 6.0%
Trp[W] 7 1.1%
Tyr[Y] 23 3.6%
Val[V] 43 6.8%
Total Length 633

Instability index
Instability index (II) 41.99
This classifies the protein as unstable

Atomic composition
Carbon 3217
Hydrogen 4989
Nitrogen 779
Oxygen 927
Sulfur 23
Total number of atoms 9935
Formula = C3217H4989N779O927S23

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 73145 M-1 cm-1
assuming NO Cys residues appear as half cystines 72770 M-1 cm-1
assuming all Cys residues are reduced 72770 M-1 cm-1
assuming all pairs of Cys residues form cystines 73145 M-1 cm-1

Aliphatic index
Aliphatic index 111.18

Coding Region Translation Calculations
Codon Bias 0.139
Codon Adaptation Index 0.156
Frequency of Optimal Codons 0.490
Hydropathicity of Protein 0.385
Aromaticity Score 0.112