Ligand 6-methylthioguanine
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Basic Ligand Information
Molecular Structure

C6H7N5S
6-methylthioguanine
YEGKYFQLKYGHAR-UHFFFAOYSA-N
2-amino-6-methyl-mercaptopurine, 2-Amino-6-methylthiopurine, 2-amino 6-methylmercaptopurine, 6-methylmercaptoguanine, methylthioguanine
Roles as Enzyme Ligand
Substrate in Enzyme-catalyzed Reactions (2 results)
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deoxyadenosine + 2-amino 6-methylmercaptopurine = adenine + 9-(2-deoxy-beta-D-ribofuranosyl)-2-amino-6-methylmercaptopurine
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thymidine + 2-amino-6-methyl-mercaptopurine = thymine + 9-(2-deoxy-beta-D-ribofuranosyl)-2-amino-6-methylmercaptopurine
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Product in Enzyme-catalyzed Reactions (3 results)
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S-adenosyl-L-methionine + 2-amino-6-thiopurine = S-adenosyl-L-homocysteine + 2-amino-6-methylthiopurine
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S-adenosyl-L-methionine + 6-thioguanine = S-adenosyl-L-homocysteine + 6-methylthioguanine
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S-adenosyl-L-methionine + thioguanine nucleotide = S-adenosyl-L-homocysteine + methylthioguanine
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Inhibitor in Enzyme-catalyzed Reactions (2 results)
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0.05 mM, 65% inhibition of exchange between free guanine with guanine
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Enzyme Kinetic Parameters
Ki Value (1 result)
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References & Links
Literature References (4)
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Purine nucleoside phosphorylase
1972
Parks, R.E.; Agarwal, R.P.
The Enzymes, 3rd Ed. (Boyer, P. D. , ed. )
7
483-514
trans-N-Deoxyribosylase: substrate specificity studies. Purine bases as acceptors
1975
Holguin, J.; Cardinaud, R.
Eur. J. Biochem.
54
515-520
Assay of nucleoside 2-deoxyribosyltransferase activity with pyruvate kinase/lactate dehydrogenase coupling system
1999
Pistotnik, E.; Sakamoto, H.; Pochet, S.; Namane, A.; Barzu, O.
Anal. Biochem.
271
192-193
Substrate and inhibitor specificity of tRNA-guanine ribosyltransferase
1984
Farkas, W.; Jacobson, K.; Katze, J.
Biochim. Biophys. Acta
781
64-75
Links to other databases for 6-methylthioguanine