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    (Original post by ojstratton)
    Yes, I think so
    Spoiler:
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    The closest I have got to the answer is: RPKPKQFFGLM but it still isn't right
    What is ASGA?
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    (Original post by ChemistryQuiz)
    What is ASGA?
    I believe it's a sequence of amino acids by their 1-letter code.
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    Finally done it.one of the hardest challenges there has been, no easy questions.
    for rg, it's to do with amino acids.
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    (Original post by ojstratton)
    I believe it's a sequence of amino acids by their 1-letter code.
    A protein code? :-/
    I have a feeling Rg is gonna take long.
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    I finally did it YAYEYAYEYAY
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    (Original post by ojstratton)
    I finally did it YAYEYAYEYAY
    Some help, please?
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    (Original post by ChemistryQuiz)
    Some help, please?
    Get an excel spreadsheet ready. This is a major spoiler so don't look unless necessary!
    For Rg:
    Spoiler:
    Show
    ASGA is a polypeptide, looking at the ASGA example, the molecule is divided up into it's molecular mass: 'a1=44.1' is the molecular mass for NH2CH3CH, 'b1=72.0' is the molecular mass for a1+CO, 'a2=131.1' is the molecular mass for b1+NHCHCH2OH, etc.
    The same logic is applied to the mass spec. results, below the example: b1 is the mass of the first amino acid, b2 is the cumulative mass of the first 2 amino acids. You'll have to then work out the missing values (b7, a9, b10, etc.) using a spread sheet and google the masses you calculate to find the corresponding amino acids (
    http://education.expasy.org/student_projects/isotopident/htdocs/aa-list.html) and then google the amino acid sequence to find the name of the polypeptide the make up.
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    Still stuck on gold
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    I finally completed the challenge

    If anyone needs help with any of the questions, feel free to PM me
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    (Original post by ojstratton)
    Get an excel spreadsheet ready. This is a major spoiler so don't look unless necessary!
    For Rg:
    Spoiler:
    Show
    ASGA is a polypeptide, looking at the ASGA example, the molecule is divided up into it's molecular mass: 'a1=44.1' is the molecular mass for NH2CH3CH, 'b1=72.0' is the molecular mass for a1+CO, 'a2=131.1' is the molecular mass for b1+NHCHCH2OH, etc.
    The same logic is applied to the mass spec. results, below the example: b1 is the mass of the first amino acid, b2 is the cumulative mass of the first 2 amino acids. You'll have to then work out the missing values (b7, a9, b10, etc.) using a spread sheet and google the masses you calculate to find the corresponding amino acids (
    http://education.expasy.org/student_projects/isotopident/htdocs/aa-list.html) and then google the amino acid sequence to find the name of the polypeptide the make up.
    Thank you!
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    help with gold please i get the idea of what substance lowers the freezing temperature but i try salts and alcahol ect but get no where help please
    wow got it now
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    well copper's really doing my right nut n.
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    (Original post by Nat_LPS)
    well copper's really doing my right nut n.
    Think along the lines of ROY G BIV
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    Rg looks lke fun :s
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    (Original post by RHCPfan)
    Think along the lines of ROY G BIV
    thanks, i got there eventually aha, Rg is painful though. :unimpressed:
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    (Original post by Nat_LPS)
    thanks, i got there eventually aha, Rg is painful though. :unimpressed:
    No problem. It sure is.
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    (Original post by RHCPfan)
    No problem. It sure is.
    exceeded the usual cambridge chemistry challenge coffee limit and somehow i'm not magically becoming a genius
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    (Original post by Nat_LPS)
    exceeded the usual cambridge chemistry challenge coffee limit and somehow i'm not magically becoming a genius
    I think I might come back to this one! :hmmmm2:
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    (Original post by ojstratton)
    Get an excel spreadsheet ready. This is a major spoiler so don't look unless necessary!
    For Rg:
    Spoiler:
    Show
    ASGA is a polypeptide, looking at the ASGA example, the molecule is divided up into it's molecular mass: 'a1=44.1' is the molecular mass for NH2CH3CH, 'b1=72.0' is the molecular mass for a1+CO, 'a2=131.1' is the molecular mass for b1+NHCHCH2OH, etc.
    The same logic is applied to the mass spec. results, below the example: b1 is the mass of the first amino acid, b2 is the cumulative mass of the first 2 amino acids. You'll have to then work out the missing values (b7, a9, b10, etc.) using a spread sheet and google the masses you calculate to find the corresponding amino acids (
    http://education.expasy.org/student_projects/isotopident/htdocs/aa-list.html) and then google the amino acid sequence to find the name of the polypeptide the make up.

    Hi, I am really stuck on Rg! I have got the following combinations, which I have put into the answer box and into Google, and none of them are correct. Please could you help me, even if it's just pointing out which ones are nearly correct, I will be very grateful!

    Spoiler:
    Show
    RPQPQQFFGFP RPQPQQFFGPF RPKPQQFFGFP RPKPQQFFGPF RPQPKQFFGFP RPQPKQFFGPF RPKPKQFFGFP RPKPKQFFGPF RPQPQKFFGFP RPQPQKFFGPF RPKPQKFFGFP RPKPQKFFGPF RPQPKKFFGFP RPQPKKFFGPF RPKPKKFFGFP RPKPKKFFGPF
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    I'm on Rg now, but if anyone needs help up until then, I am happy to help! (especially seeing as I always get help!)
 
 
 
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