Rhea - reaction knowledgebase

Enzymes

UniProtKB ^help_outline	8 proteins
Enzyme class ^help_outline	EC 2.6.1.100 L-glutamine:2-deoxy-scyllo-inosose aminotransferase

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Name ^help_outline 2-deoxy-L-scyllo-inosose Identifier CHEBI:64796 Charge 0 Formula C6H10O5 InChIKey^help_outline GZYCZKBRQBKGJW-FSZQNWAESA-N SMILES^help_outline O[C@@H]1CC(=O)[C@@H](O)[C@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 2 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Name ^help_outline L-glutamine Identifier CHEBI:58359 Charge 0 Formula C5H10N2O3 InChIKey^help_outline ZDXPYRJPNDTMRX-VKHMYHEASA-N SMILES^help_outline NC(=O)CC[C@H]([NH3+])C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 74 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Name ^help_outline 2-deoxy-scyllo-inosamine Identifier CHEBI:65003 Charge 1 Formula C6H14NO4 InChIKey^help_outline QXQNRSUOYNMXDL-KGJVWPDLSA-O SMILES^help_outline [NH3+][C@H]1C[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 4 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Name ^help_outline 2-oxoglutaramate Identifier CHEBI:16769 (CAS: 18465-19-5) ^help_outline Charge -1 Formula C5H6NO4 InChIKey^help_outline COJBGNAUUSNXHX-UHFFFAOYSA-M SMILES^help_outline NC(=O)CCC(=O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 12 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule

Cross-references

	RHEA:34147	RHEA:34148	RHEA:34149	RHEA:34150
Reaction direction	undefined	left-to-right	right-to-left	bidirectional
UniProtKB ^help_outline	8 proteins
EC numbers ^help_outline	2.6.1.100
KEGG ^help_outline				R08890
MetaCyc ^help_outline				RXN-13117

Publications

Biosynthesis of aminoglycoside antibiotics: cloning, expression and characterisation of an aminotransferase involved in the pathway to 2-deoxystreptamine.

Huang F., Li Y., Yu J., Spencer J.B.

The gene btrR from Bacillus circulans has been cloned and expressed and shown to produce a protein which catalyses the transamination of 2-deoxy-scyllo-inosose to give 2-deoxy-scyllo-inosamine, an intermediate in the biosynthesis of 2-deoxystreptamine.

Chem. Commun. (Camb.) 23:2860-2861(2002) [PubMed] [EuropePMC]

This publication is cited by 1 other entry.
Functional characterization of kanB by complementing in engineered Streptomyces fradiae Deltaneo6::tsr.

Jnawali H.N., Subba B., Liou K., Sohng J.K.

A putative aminotransferase gene, kanB, lies in the biosynthetic gene cluster of Streptomyces kanamyceticus ATCC 12853 and has 66% identity with neo6 in neomycin biosynthesis. Streptomyces fradiae Deltaneo6::tsr was generated by disrupting neo6 in the neomycin producer Streptomyces fradiae. Neomyc ... >> More

A putative aminotransferase gene, kanB, lies in the biosynthetic gene cluster of Streptomyces kanamyceticus ATCC 12853 and has 66% identity with neo6 in neomycin biosynthesis. Streptomyces fradiae Deltaneo6::tsr was generated by disrupting neo6 in the neomycin producer Streptomyces fradiae. Neomycin production was completely abolished in the disruptant mutant but was restored through self-complementation of neo6. S. fradiae HN4 was generated through complementation with kanB in Streptomyces fradiae neo6::tsr. Based on metabolite analysis by ESI/MS and LC/MS, neomycin production was restored in Streptomyces fradiae HN4. Thus, like neo6, kanB also functions as a 2-deoxy-scyllo-inosose aminotransferase that has dual functions in the formation of 2-deoxy-scyllo-inosose (DOS). << Less

Biotechnol. Lett. 31:869-875(2009) [PubMed] [EuropePMC]

This publication is cited by 1 other entry.
A gene cluster for biosynthesis of kanamycin from Streptomyces kanamyceticus: comparison with gentamicin biosynthetic gene cluster.

Kharel M.K., Subba B., Basnet D.B., Woo J.S., Lee H.C., Liou K., Sohng J.K.

Gene clusters for the biosynthesis of kanamycin (Km) and gentamicin (Gm) were isolated from the genomic libraries of Streptomyces kanamyceticus and Micromonospora echinospora, respectively. The sequencing of the 47 kb-region of S. kanamyceticus genomic DNA revealed 40 putative open reading frames ... >> More

Gene clusters for the biosynthesis of kanamycin (Km) and gentamicin (Gm) were isolated from the genomic libraries of Streptomyces kanamyceticus and Micromonospora echinospora, respectively. The sequencing of the 47 kb-region of S. kanamyceticus genomic DNA revealed 40 putative open reading frames (ORFs) encoding Km biosynthetic proteins, regulatory proteins, and resistance and transport proteins. Similarly, the sequencing of 32.6 kb genomic DNA of M. echinospora revealed a Gm biosynthetic gene cluster flanked by resistant genes. Biosynthetic pathways for the formation of Km were proposed by the comparative study of biosynthetic genes. Out of 12 putative Km biosynthetic genes, kanA was expressed in Escherichia coli and determined its function as a 2-deoxy-scyllo-inosose synthase. Furthermore, the acetylations of aminoglycoside-aminocyclitols (AmAcs) by Km acetyltransferase (KanM) were also demonstrated. The acetylated derivatives completely lost their antibacterial activities against Bacillus subtilis. The comparative genetic studies of Gm, Km, tobramycin (Tm), and butirosin (Bn) reveal their similar biosynthetic routes and provide a framework for the further biosynthetic studies. << Less

Arch. Biochem. Biophys. 429:204-214(2004) [PubMed] [EuropePMC]
Identification of L-glutamine: 2-deoxy-scyllo-inosose aminotransferase required for the biosynthesis of butirosin in Bacillus circulans.

Tamegai H., Nango E., Kuwahara M., Yamamoto H., Ota Y., Kuriki H., Eguchi T., Kakinuma K.

Using inverse PCR, two new genes (btrN and btrS) were identified upstream of the putative glycosyltransferase gene btrM in the butirosin-biosynthetic btr gene cluster of Bacillus circulans. The upstream gene btrS showed significant homology with stsC of Streptomyces griseus, which encodes L-glutam ... >> More

Using inverse PCR, two new genes (btrN and btrS) were identified upstream of the putative glycosyltransferase gene btrM in the butirosin-biosynthetic btr gene cluster of Bacillus circulans. The upstream gene btrS showed significant homology with stsC of Streptomyces griseus, which encodes L-glutamine:scyllo-inosose aminotransferase in the biosynthesis of streptomycin. The function of BtrS was further confirmed by heterologous expression in Escherichia coli and chemical identification of the conversion of 2-deoxy-scyllo-inosose into 2-deoxy-scyllo-inosamine. The identification of BtrS as L-glutamine:2-deoxy-scyllo-inosose aminotransferase is the first report of the aminotransferase gene responsible for 2-deoxystreptamine biosynthesis. << Less

J. Antibiot. 55:707-714(2002) [PubMed] [EuropePMC]

This publication is cited by 1 other entry.
First identification of Streptomyces genes involved in the biosynthesis of 2-deoxystreptamine-containing aminoglycoside antibiotics. Genetic and evolutionary analysis of L-glutamine:2-deoxy-scyllo-inosose aminotransferase genes.

Tamegai H., Eguchi T., Kakinuma K.

J. Antibiot. 55:1016-1018(2002) [PubMed] [EuropePMC]
The neomycin biosynthetic gene cluster of Streptomyces fradiae NCIMB 8233: characterisation of an aminotransferase involved in the formation of 2-deoxystreptamine.

Huang F., Haydock S.F., Mironenko T., Spiteller D., Li Y., Spencer J.B.

The biosynthetic gene cluster of the 2-deoxystreptamine (DOS)-containing aminoglycoside antibiotic neomycin has been cloned for the first time by screening of a cosmid library of Streptomyces fradiae NCIMB 8233. Sequence analysis has identified 21 putative open reading frames (ORFs) in the neomyci ... >> More

The biosynthetic gene cluster of the 2-deoxystreptamine (DOS)-containing aminoglycoside antibiotic neomycin has been cloned for the first time by screening of a cosmid library of Streptomyces fradiae NCIMB 8233. Sequence analysis has identified 21 putative open reading frames (ORFs) in the neomycin gene cluster (neo) with significant protein sequence similarity to gene products involved in the biosynthesis of other DOS-containing aminoglycosides, namely butirosin (btr), gentamycin (gnt), tobramycin (tbm) and kanamycin (kan). Located at the 5'-end of the neo gene cluster is the previously-characterised neomycin phosphotransferase gene (apH). Three genes unique to the neo and btr clusters have been revealed by comparison of the neo cluster to btr, gnt, tbm and kan clusters. This suggests that these three genes may be involved in the transfer of a ribose moiety to the DOS ring during the antibiotic biosynthesis. The product of the neo-6 gene is characterised here as the L-glutamine : 2-deoxy-scyllo-inosose aminotransferase responsible for the first transamination in DOS biosynthesis, which supports the assignment of the gene cluster. << Less

Org. Biomol. Chem. 3:1410-1418(2005) [PubMed] [EuropePMC]

This publication is cited by 1 other entry.

RHEA:34147 2-deoxy-L-scyllo-inosose + L-glutamine = 2-deoxy-scyllo-inosamine + 2-oxoglutaramate

Enzymes

Reaction participants Show >> << Hide

Cross-references

Publications

Biosynthesis of aminoglycoside antibiotics: cloning, expression and characterisation of an aminotransferase involved in the pathway to 2-deoxystreptamine.

Functional characterization of kanB by complementing in engineered Streptomyces fradiae Deltaneo6::tsr.

A gene cluster for biosynthesis of kanamycin from Streptomyces kanamyceticus: comparison with gentamicin biosynthetic gene cluster.

Identification of L-glutamine: 2-deoxy-scyllo-inosose aminotransferase required for the biosynthesis of butirosin in Bacillus circulans.

First identification of Streptomyces genes involved in the biosynthesis of 2-deoxystreptamine-containing aminoglycoside antibiotics. Genetic and evolutionary analysis of L-glutamine:2-deoxy-scyllo-inosose aminotransferase genes.

The neomycin biosynthetic gene cluster of Streptomyces fradiae NCIMB 8233: characterisation of an aminotransferase involved in the formation of 2-deoxystreptamine.