Enzymes
| UniProtKB help_outline | 2,439 proteins |
| Enzyme class help_outline |
|
Reaction participants Show >> << Hide
- Name help_outline an α-Kdo-(2→6)-lipid IVA Identifier CHEBI:176428 Charge -5 Formula C32H45N2O30P2R4 SMILEShelp_outline [C@H]1(OP(=O)([O-])[O-])[C@H](OC(=O)C[C@@H](*)O)[C@@H](NC(=O)C[C@@H](*)O)[C@@H](O[C@@H]1CO[C@@]2(C(=O)[O-])O[C@@H]([C@H](O)[C@@H](C2)O)[C@@H](CO)O)OC[C@@H]3[C@H]([C@@H]([C@H]([C@H](O3)OP(=O)([O-])[O-])NC(=O)C[C@@H](*)O)OC(=O)C[C@@H](*)O)O 2D coordinates Mol file for the small molecule Search links Involved in 6 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline ATP Identifier CHEBI:30616 (Beilstein: 3581767) help_outline Charge -4 Formula C10H12N5O13P3 InChIKeyhelp_outline ZKHQWZAMYRWXGA-KQYNXXCUSA-J SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 1,301 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline a 4-O-phospho-α-Kdo-(2→6)-lipid IVA Identifier CHEBI:193140 Charge -7 Formula C32H44N2O33P3R4 SMILEShelp_outline [C@H]1(OP([O-])([O-])=O)[C@H](OC(=O)C[C@@H](*)O)[C@@H](NC(=O)C[C@@H](*)O)[C@@H](O[C@@H]1CO[C@@]2(C(=O)[O-])O[C@@H]([C@H](O)[C@@H](C2)OP(=O)([O-])[O-])[C@@H](CO)O)OC[C@@H]3[C@H]([C@@H]([C@H]([C@H](O3)OP(=O)([O-])[O-])NC(=O)C[C@@H](*)O)OC(=O)C[C@@H](*)O)O 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 ADP Identifier CHEBI:456216 (Beilstein: 3783669) help_outline Charge -3 Formula C10H12N5O10P2 InChIKeyhelp_outline XTWYTFMLZFPYCI-KQYNXXCUSA-K SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 854 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 9,717 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:74271 | RHEA:74272 | RHEA:74273 | RHEA:74274 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
|
|||
| EC numbers help_outline |
Related reactions help_outline
Specific form(s) of this reaction
Publications
-
A Haemophilus influenzae gene that encodes a membrane bound 3-deoxy-D-manno-octulosonic acid (Kdo) kinase. Possible involvement of kdo phosphorylation in bacterial virulence.
White K.A., Lin S., Cotter R.J., Raetz C.R.H.
The lipopolysaccharide of Haemophilus influenzae contains a single 3-deoxy-D-manno-octulosonic acid (Kdo) residue derivatized with either a phosphate or an ethanolamine pyrophosphate moiety at the 4-OH position. In previous studies, we identified a kinase unique to H. influenzae extracts that phos ... >> More
The lipopolysaccharide of Haemophilus influenzae contains a single 3-deoxy-D-manno-octulosonic acid (Kdo) residue derivatized with either a phosphate or an ethanolamine pyrophosphate moiety at the 4-OH position. In previous studies, we identified a kinase unique to H. influenzae extracts that phosphorylates Kdo-lipid IV(A), a key precursor of lipopolysaccharide in this organism. We have now identified the gene encoding the Kdo kinase by using an expression cloning approach. A cosmid library containing random DNA fragments from H. influenzae strain Rd was constructed in Escherichia coli. Extracts of 472 colonies containing individual hybrid cosmids were assayed for Kdo kinase activity. A single hybrid cosmid directing expression of the kinase was found. The kinase gene was identified by activity assays, sub-cloning, and DNA sequencing. When the putative kinase gene was expressed in E. coli behind a T7 promoter, massive overproduction of kinase activity was achieved ( approximately 8000-fold higher than in H. influenzae membranes). The catalytic properties and the product generated by the overexpressed kinase, assayed with Kdo-lipid IV(A) as the substrate, were the same as observed with H. influenzae membranes. Unexpectedly, the kinase gene was identical to a previously characterized open reading frame (orfZ), which had been shown to be important for establishing bacteremia in an infant rat model (Hood, D. W., Deadman, M. E., Allen, T., Masoud, H., Martin, A., Brisson, J. R., Fleischmann, R., Venter, J. C., Richards, J. C., and Moxon, E. R. (1996) Mol. Microbiol. 22, 951-965). However, based solely on the genome sequence of H. influenzae Rd, no biochemical function had been assigned to the product of orfZ, which we now designate kdkA ("Kdo kinase A"). Although Kdo phosphorylation may be critical for bacterial virulence of H. influenzae, it does not appear to be required for growth. << Less
J. Biol. Chem. 274:31391-31400(1999) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.
-
3-deoxy-D-manno-oct-2-ulosonic acid (Kdo) transferase (WaaA) and Kdo kinase (KdkA) of Haemophilus influenzae are both required to complement a waaA knockout mutation of Escherichia coli.
Brabetz W., Mueller-Loennies S., Brade H.
The lipopolysaccharide (LPS) of the deep rough mutant Haemophilus influenzae I69 consists of lipid A and a single 3-deoxy-d-manno-oct-2-ulosonic acid (Kdo) residue substituted with one phosphate at position 4 or 5 (Helander, I. M., Lindner, B., Brade, H., Altmann, K., Lindberg, A. A., Rietschel, E ... >> More
The lipopolysaccharide (LPS) of the deep rough mutant Haemophilus influenzae I69 consists of lipid A and a single 3-deoxy-d-manno-oct-2-ulosonic acid (Kdo) residue substituted with one phosphate at position 4 or 5 (Helander, I. M., Lindner, B., Brade, H., Altmann, K., Lindberg, A. A., Rietschel, E. T., and Zähringer, U. (1988) Eur. J. Biochem. 177, 483-492). The waaA gene encoding the essential LPS-specific Kdo transferase was cloned from this strain, and its nucleotide sequence was identical to H. influenzae DSM11121. The gene was expressed in the Gram-positive host Corynebacterium glutamicum and characterized in vitro to encode a monofunctional Kdo transferase. waaA of H. influenzae could not complement a knockout mutation in the corresponding gene of an Re-type Escherichia coli strain. However, complementation was possible by coexpressing the recombinant waaA together with the LPS-specific Kdo kinase gene (kdkA) of H. influenzae DSM11121 or I69, respectively. The sequences of both kdkA genes were determined and differed in 25 nucleotides, giving rise to six amino acid exchanges between the deduced proteins. Both E. coli strains which expressed waaA and kdkA from H. influenzae synthesized an LPS containing a single Kdo residue that was exclusively phosphorylated at position 4. The structure was determined by nuclear magnetic resonance spectroscopy of deacylated LPS. Therefore, the reaction products of both cloned Kdo kinases represent only one of the two chemical structures synthesized by H. influenzae I69. << Less
J. Biol. Chem. 275:34954-34962(2000) [PubMed] [EuropePMC]
This publication is cited by 3 other entries.