1efz
From Proteopedia
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|PDB= 1efz |SIZE=350|CAPTION= <scene name='initialview01'>1efz</scene>, resolution 2.00Å | |PDB= 1efz |SIZE=350|CAPTION= <scene name='initialview01'>1efz</scene>, resolution 2.00Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand= | + | |LIGAND= <scene name='pdbligand=PRF:7-DEAZA-7-AMINOMETHYL-GUANINE'>PRF</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene> |
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/Queuine_tRNA-ribosyltransferase Queuine tRNA-ribosyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.2.29 2.4.2.29] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Queuine_tRNA-ribosyltransferase Queuine tRNA-ribosyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.2.29 2.4.2.29] </span> |
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY=[[1pud|1PUD]] | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1efz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1efz OCA], [http://www.ebi.ac.uk/pdbsum/1efz PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1efz RCSB]</span> | ||
}} | }} | ||
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[[Category: Reuter, K.]] | [[Category: Reuter, K.]] | ||
[[Category: Stubbs, M T.]] | [[Category: Stubbs, M T.]] | ||
| - | [[Category: PRF]] | ||
| - | [[Category: ZN]] | ||
[[Category: glycosyltransferase]] | [[Category: glycosyltransferase]] | ||
[[Category: transferase]] | [[Category: transferase]] | ||
[[Category: trna-modifying enzyme]] | [[Category: trna-modifying enzyme]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 20:01:53 2008'' |
Revision as of 17:01, 30 March 2008
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| , resolution 2.00Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , | ||||||
| Activity: | Queuine tRNA-ribosyltransferase, with EC number 2.4.2.29 | ||||||
| Related: | 1PUD
| ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
MUTAGENESIS AND CRYSTALLOGRAPHIC STUDIES OF ZYMOMONAS MOBILIS TRNA-GUANINE TRANSGLYCOSYLASE TO ELUCIDATE THE ROLE OF SERINE 103 FOR ENZYMATIC ACTIVITY
Overview
The tRNA modifying enzyme tRNA-guanine transglycosylase (TGT) is involved in the exchange of guanine in the first position of the anticodon with preQ1 as part of the biosynthesis of the hypermodified base queuine (Q). Mutation of Ser90 to an alanine in Escherichia coli TGT leads to a dramatic reduction of enzymatic activity (Reuter, K. et al. (1994) Biochemistry 33, 7041-7046). To further clarify the role of this residue in the catalytic center, we have mutated the corresponding Ser103 of the crystallizable Zymomonas mobilis TGT into alanine. The crystal structure of a TGT(S103A)/preQ1 complex combined with biochemical data presented in this paper suggest that Ser103 is essential for substrate orientation in the TGT reaction.
About this Structure
1EFZ is a Single protein structure of sequence from Zymomonas mobilis. Full crystallographic information is available from OCA.
Reference
Mutagenesis and crystallographic studies of Zymomonas mobilis tRNA-guanine transglycosylase to elucidate the role of serine 103 for enzymatic activity., Gradler U, Ficner R, Garcia GA, Stubbs MT, Klebe G, Reuter K, FEBS Lett. 1999 Jul 2;454(1-2):142-6. PMID:10413112
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