Enzymes
| UniProtKB help_outline | 1 proteins |
| Enzyme class help_outline |
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- Name help_outline gentamicin C Identifier CHEBI:75616 Charge 5 Formula C19H42N5O7R2 SMILEShelp_outline C[NH2+][C@@H]1[C@@H](O)[C@@H](O[C@H]2[C@H]([NH3+])C[C@H]([NH3+])[C@@H](O[C@H]3O[C@@H](CC[C@H]3[NH3+])[C@@H]([*])[NH2+][*])[C@@H]2O)OC[C@]1(C)O 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline acetyl-CoA Identifier CHEBI:57288 (Beilstein: 8468140) help_outline Charge -4 Formula C23H34N7O17P3S InChIKeyhelp_outline ZSLZBFCDCINBPY-ZSJPKINUSA-J SMILEShelp_outline CC(=O)SCCNC(=O)CCNC(=O)[C@H](O)C(C)(C)COP([O-])(=O)OP([O-])(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1OP([O-])([O-])=O)n1cnc2c(N)ncnc12 2D coordinates Mol file for the small molecule Search links Involved in 361 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline N3-acetylgentamycin C Identifier CHEBI:75617 Charge 4 Formula C21H43N5O8R2 SMILEShelp_outline C[NH2+][C@@H]1[C@@H](O)[C@@H](O[C@H]2[C@H]([NH3+])C[C@H](NC(C)=O)[C@@H](O[C@H]3O[C@@H](CC[C@H]3[NH3+])[C@@H]([*])[NH2+][*])[C@@H]2O)OC[C@]1(C)O 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline CoA Identifier CHEBI:57287 (Beilstein: 11604429) help_outline Charge -4 Formula C21H32N7O16P3S InChIKeyhelp_outline RGJOEKWQDUBAIZ-IBOSZNHHSA-J SMILEShelp_outline CC(C)(COP([O-])(=O)OP([O-])(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1OP([O-])([O-])=O)n1cnc2c(N)ncnc12)[C@@H](O)C(=O)NCCC(=O)NCCS 2D coordinates Mol file for the small molecule Search links Involved in 1,511 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,521 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:14441 | RHEA:14442 | RHEA:14443 | RHEA:14444 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Purification and properties of two gentamicin-modifying enzymes, coded by a single plasmid pPK237 originating from Pseudomonas aeruginosa.
Angelatou F., Litsas S.B., Kontomichalou P.
A broad host range multiresistance plasmid pPK237, originating from Pseudomonas aeruginosa mediates high-level resistance to gentamicin and tobramycin. It was found to code for two gentamicin modifying enzymes, which from their substrate profile by radioenzymatic assay were characterized as aminog ... >> More
A broad host range multiresistance plasmid pPK237, originating from Pseudomonas aeruginosa mediates high-level resistance to gentamicin and tobramycin. It was found to code for two gentamicin modifying enzymes, which from their substrate profile by radioenzymatic assay were characterized as aminoglycoside acetyltransferase AAC(3)-I and aminoglycoside adenylyltransferase AAD(2"). The two enzymes were studied after purification from an Escherichia coli K12 host. The two gentamicin-modifying enzymes coded by PPK237 were completely separated by DEAE chromatography. The purification (126 fold) of the acetyltransferase was achieved by (NH4)2SO4 precipitation, DEAE chromatography and affinity chromatography. The purification of the adenylyltransferase was performed by affinity chromatography directly after (NH4)2SO4 precipitation. Both purified enzyme preparations showed a single protein band on disc electrophoresis. The Km for gentamicin C1 of the acetyltransferase was 0.066 mM. The amino acid analysis of the acetyltransferase coded by pPK237 showed a different aminoacid composition than that of the gentamicin acetyltransferase AAC(3)-I purified by Williams and Northrop17). The acetyltransferase after DEAE chromatography is stable for many months at -20 degrees C, while the adenylyltransferase after purification is highly unstable; it shows enzymatic activity only in the presence of Mg++. << Less
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Enzymatic modification of aminoglycoside antibiotics: a new 3-N-acetylating enzyme from a Pseudomonas aeruginosa isolate.
Biddlecome S., Haas M., Davies J., Miller G.H., Rane D.F., Daniels P.J.
A new 3-N-aminoglycoside acetyltransferase is described, which possesses a wider substrate range than any such enzyme so far discovered in clinical isolates of antibiotic-resistant bacteria.
Antimicrob Agents Chemother 9:951-955(1976) [PubMed] [EuropePMC]
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Purification and properties of gentamicin acetyltransferase I.
Williams J.W., Northrop D.B.
Gentamicin acetyltransferase I is induced 13-fold in R factor resistant Escherichia coli by high concentrations (1 mg/ml) of gentamicin in the growth medium. The enzyme is maximally released from bacteria by osmotic shock in late-log phase, unlike previously studied periplasmic enzymes. Streptomyc ... >> More
Gentamicin acetyltransferase I is induced 13-fold in R factor resistant Escherichia coli by high concentrations (1 mg/ml) of gentamicin in the growth medium. The enzyme is maximally released from bacteria by osmotic shock in late-log phase, unlike previously studied periplasmic enzymes. Streptomycin sulfate and ammonium sulfate precipitations of shockate followed by affinity and ion-exchange chromatography recover 51% of the induced enzyme with a 360-fold increase in purity (12% of 4400-fold, uninduced). The purified enzyme appears homogeneous by six criteria, the first aminoglycoside inactivating enzyme so purified. Sodium dodecyl sulfate electrophoresis, amino acid analysis, and sedimentation analyses indicate a tetrameric protein of 63000 molecular weight. The protein does not contain tryptophan. Kinetic analyses yield apparent values of: Vmax = 3.4 +/-0.2 mumol per min mg at pH 8 (optimum), Km (acetyl-CoA) = 3.9 +/-0.2 muM, Km (gentamicin Cla) = 0.3 +/-0.08 muM, KI (gentamicin substrate inhibition) = 160 +/-29 muM. The activity of the enzyme is stable to a variety of conditions, including lyophilization and prolonged storage, and can be monitored by two convenient spectrophotometric assays. << Less