[BiO BB] (no subject)

[Kouichi Takahashi]

> "Sucheta Tripathi" <tsucheta at hotmail.com> writes:
> 
> > I was writing a small program of DNA-> protein translation in C, but
> > when substituting 3 letter codons by an amino acid I can't think of
> > any other option than for if ..elseif statements, which makes me
> > wild. Can anyone suggest me any other way to go about it.
> 
> Switch statement?

Table lookup. 


const int CodonTable[4][4][4] =
{
{
  /* AA? */
  {Lys,Asn,Lys,Asn},
  /* AC? */
  {Thr,Thr,Thr,Thr},
  /* AG? */
  {Arg,Ser,Arg,Ser},
  /* AT? */
  {Ile,Ile,Met,Ile}
},
{
  /* CA? */
  {Gln,His,Gln,His},
  /* CC? */
  {Pro,Pro,Pro,Pro},
  /* CG? */
  {Arg,Arg,Arg,Arg},
  /* CT? */
  {Leu,Leu,Leu,Leu}
},
{
  /* GA? */
  {Glu,Asp,Glu,Asp},
  /* GC? */
  {Ala,Ala,Ala,Ala},
  /* GG? */
  {Gly,Gly,Gly,Gly},
  /* GT? */
  {Val,Val,gVal,Val}
},
{
  /* TA? */
  {Term,Tyr,Term,Tyr},
  /* TC? */
  {Ser,Ser,Ser,Ser},
  /* TG? */
  {Term,Cys,Trp,Cys},
  /* TT? */
  {Leu,Phe,Leu,Phe}
},
};



-----
Kouichi Takahashi                         E-CELL Project,
email: shafi at sfc.keio.ac.jp               Institute for Advanced Biosciences
       shafi at e-cell.org                   Keio Univ. SFC