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 Forum index » Diversions » TimeWasters
Geocaching anyone? Help me break this code, please...
Moderators: Giskard, ndemeter, ScarpeGrosse
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tbot
Kilroy

Joined: 27 Mar 2005
Posts: 1

Geocaching anyone? Help me break this code, please...

A friend found unfiction.com for me when I asked him for help breaking a code. Once I logged on here, I promptly forgot my code-breaking dilemma and starting researching ARGs... looks like I have yet another new hobby!

But, I'm returning to breaking the code. The site for the code is here.

If that link doesn't work, go to geocaching.com and search for "life's little instruction book", which is the name of the cache. Obviously, the key to the code has something to do with DNA; but WHAT?? I know that A always pairs with T and C with G, but how do I convert this string (see below) into a set of coordinates?

I must admit, I like geocaching, but codebreaking is definitely not one of my strengths.

Help please!

1/2 of a DNA string/thread:

"Line breaks are arbitrary, read right through:"

CGTTGTATATGCATCTTCGCAGATATTAGCTTCCACTTAGATGCAAC
AGCAATCCCCATTCAAAATTATGATGACCATGCAAGTTGCTAGGGT
AGCTTCATTTTCACGGGCGTACTCATGAGTTGACTCATGGCAAGCA
CAGTTTTCCACAATTCTGTCTTCGCAATTCTCTATACAAGATTCTTTG
ATCAAAATCAT

[edit] Added the missing linebreaks to fix wrapping problem. -bill

PostPosted: Sun Mar 27, 2005 4:44 am
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firefox
Unfettered

Joined: 28 Jul 2004
Posts: 333

might it have something to do with this table
notice how you can break up that code into blocks three letters, and each possible combination has a corresponding letter. ie- GAT is D

so then we get something that looks like :
Spoiler (Rollover to View):

LCICIFADISHLDATAIPIQNYDDHASC

(TER or end)

GSFIFTGVLMS

(TER or end)

LMASTVFHNSVFAILYTRFFDQNH


i might have made some mistakes transcribing it, hey its late at night Wink

so.. hope that helps, cos i have no idea what to do from here. Razz

PostPosted: Wed Mar 30, 2005 10:10 am
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Nik_Doof
Unfettered


Joined: 09 Oct 2004
Posts: 494
Location: Liverpool, UK

Its genetic sequencing, human genome project style Smile
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Nik_Doof
No you cant have my 333 Letimark Very Happy


PostPosted: Wed Mar 30, 2005 6:26 pm
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bartmans
Veteran


Joined: 30 Dec 2004
Posts: 97
Location: the Netherlands

DNA indeed can encode proteins by a three-letter code. However, this also means that each DNA sequence contains three different reading frames, wherein a triplet codon can run from position 1-3, 2-4 or 3-5.
Further, as is stated before, each DNA also has a second strand which is complementary to the first strand. This complementary strand can also be coding and again with three reading frames. Thus, each DNA strand in general has six different translations.
In this case these six different translations read:

Spoiler (Rollover to View):
Translate Tool - Results of translation
Please select one of the following frames:
5'3' Frame 1
R C I C I F A D I S F H L D A T A I P I Q N Y D D H A S C Stop G S F I F T G V L Met S Stop L Met A S T V F H N S V F A I L Y T R F F D Q N H


5'3' Frame 2
V V Y A S S Q I L A S T Stop Met Q Q Q S P F K I Met Met T Met Q V A R V A S F S R A Y S Stop V D S W Q A Q F S T I L S S Q F S I Q D S L I K I

5'3' Frame 3
L Y Met H L R R Y Stop L P L R C N S N P H S K L Stop Stop P C K L L G Stop L H F H G R T H E L T H G K H S F P Q F C L R N S L Y K I L Stop S K S

3'5' Frame 1
Met I L I K E S C I E N C E D R I V E N C A C H E S T H E Y A R E N E A T L A T C Met V I I I L N G D C C C I Stop V E A N I C E D A Y T T

3'5' Frame 2
Stop F Stop S K N L V Stop R I A K T E L W K T V L A Met S Q L Met S T P V K Met K L P Stop Q L A W S S Stop F Stop Met G I A V A S K W K L I S A K Met H I Q

3'5' Frame 3
D F D Q R I L Y R E L R R Q N C G K L C L P Stop V N S Stop V R P Stop K Stop S Y P S N L H G H H N F E W G L L L H L S G S Stop Y L R R C I Y N


Thus, you see that in this case the first reading frame of the contemplary strand gives the code you want.
Apparently after the word NEAT the coordinates are given in Roman numbers, where you should read Met as being M, thus probably:
Spoiler (Rollover to View):

A T C Met V I I I L N G D C C C I Stop V E A N I C E D A Y T T =
Lat CMVIII Lng DCCCI = at 908 Lng 531 whereby I assume that the stopcodon would be abbreviated as Ha(lt), thus giving:
Have a nice day


The program for translating DNA sequences can be found at: http://au.expasy.org/tools/dna.html
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PostPosted: Thu Mar 31, 2005 4:23 am
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