counting base pairs

[umabio]

Dear all,

how to count the base pairs of a DNA and protein sequence?
What are the codings in VB?

[si_the_geek]

Thread moved from the 'CodeBank VB6' forum (which is for you to post working code examples, not questions) to the 'VB6 and earlier' forum

[baja_yu]

How does a protein sequence (your data) look like?

[Milk]

I'm no biologist, I've just had a quick peek at wikipedia, do you have a bunch of strings which you need to match up like "(5)ATCGATTGAGCTCTAGCG(3)" pairs with "(5)CGCTAGAGCTCAATCGAT(3)" (I think I've just twigged where the film GATTACA gets its name.)

[MartinLiss]

Sorry about the non-related posts that you might have seen before I deleted them.

[Doogle]

OK, on the assumption that this is a serious question, and taking baja_yu's question into account, what data do you have (an example would be helpful) and what code have you already tried ?

[Doogle]

I've done some research and I suspect you've just worded your request slightly incorrectly.

Are you looking to take a protein, work out the amino acids and RNA / DNA condons, and then decode into nucleotides and count them ?

eg (Somewhat simplified)
Peptide -> amino acids = Met Alo Trp Thr Ser -> mRNA = A U G G C C U G G A C U U C A
-> DNA Condons(Antisense) = {T A C} {C G G} {T C C} {T G T} {T G T}
-> nucleotides = T A C C G G T C C T G T T G T
from which you can work out the Sense strand (the Compliment) giving you the Base Pairings
T A C C G G T C C T G T T G T -> Antisense
A T G G C C A G G A C A A C A -> Sense
ie 15 Base Pairs in this example.

EDIT: Further reading suggests (to me at least) that the number of DNA Base Parings will always be 3 X number of amino acids (Number of condons). RNA might be different due to the start and stop condons but I've still to get my head round that.