Comprehensive Research Report: Wzm (PA5451) in *Pseudomonas aeruginosa* PAO1 Falcon Edison Scientific Literature 31 citations 2 artifacts 2026-07-03T23:34:16.355059

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Comprehensive Research Report: Wzm (PA5451) in Pseudomonas aeruginosa PAO1

1. Gene and Protein Identity

The gene wzm (ordered locus name PA5451) in Pseudomonas aeruginosa strain PAO1 (UniProt accession Q9HTB8) encodes a transport permease protein belonging to the ABC-2 integral membrane protein family (InterPro domains: IPR013525, IPR047817, IPR000412; Pfam: PF01061). Wzm functions as the transmembrane domain (TMD) component of the Wzm–Wzt ATP-binding cassette (ABC) transporter, which is essential for the export of the common polysaccharide antigen (CPA) O-polysaccharide across the inner membrane of P. aeruginosa (king2009reviewlipopolysaccharidebiosynthesis pages 25-27, rocchetta1999geneticsofoantigen pages 14-15).

The following table summarizes the key properties of Wzm:

Property Details
Gene name/locus wzm; ordered locus PA5451 in Pseudomonas aeruginosa PAO1 (from the target UniProt record; gene-function linkage to CPA export supported in P. aeruginosa) (king2009reviewlipopolysaccharidebiosynthesis pages 25-27, rocchetta1999geneticsofoantigen pages 14-15)
UniProt ID Q9HTB8 (target UniProt accession provided by user)
Protein name Transport permease protein; functionally the integral membrane permease (TMD) subunit of the Wzm-Wzt ABC transporter for O-polysaccharide export (king2009reviewlipopolysaccharidebiosynthesis pages 25-27, rocchetta1999geneticsofoantigen pages 14-15)
Protein family ABC-2 integral membrane protein family / O-antigen polysaccharide ABC transporter permease; Wzm is the membrane component of a two-subunit ABC exporter (valvano2003exportofospecific pages 8-9, king2009reviewlipopolysaccharidebiosynthesis pages 25-27)
Organism Pseudomonas aeruginosa strain PAO1 (ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101)
Substrate transported UndPP-linked common polysaccharide antigen (CPA; formerly A-band), a D-rhamnose homopolymer/rhamnan O-polysaccharide assembled on the cytosolic face of the inner membrane before export to the periplasmic side (lam2011geneticandfunctional pages 8-9, king2009reviewlipopolysaccharidebiosynthesis pages 25-27, king2009reviewlipopolysaccharidebiosynthesis pages 21-23)
Transport partner Wzt, the cytosolic ATP-binding/nucleotide-binding domain partner; together Wzm-Wzt form the ABC transporter required for CPA export (king2009reviewlipopolysaccharidebiosynthesis pages 25-27, rocchetta1999geneticsofoantigen pages 14-15, caffalette2021cryoemstructureof pages 1-2)
Localization Inner membrane integral membrane protein; exports substrate from the cytoplasmic side to the periplasmic side for subsequent ligation to lipid A-core (king2009reviewlipopolysaccharidebiosynthesis pages 25-27, caffalette2021cryoemstructureof pages 1-2, king2009reviewlipopolysaccharidebiosynthesis pages 21-23)
Topology (number of TM helices) Wzm homologs form the transporter TMD with 6 transmembrane helices per protomer, plus an N-terminal amphipathic/interface helix and periplasmic gate helices in structural studies of homologous Wzm-Wzt systems (bi2018architectureofa pages 1-2, bi2018architectureofa pages 2-3, caffalette2021cryoemstructureof pages 2-2)
Biosynthetic pathway ABC transporter-dependent CPA/A-band O-antigen biosynthesis pathway; distinct from the Wzy-dependent pathway used for O-specific antigen (OSA/B-band). CPA is synthesized on a lipid carrier in the cytoplasm, exported by Wzm-Wzt, then ligated to lipid A-core in the periplasm (king2009reviewlipopolysaccharidebiosynthesis pages 20-21, king2009reviewlipopolysaccharidebiosynthesis pages 21-23)
Biological function Required for export of CPA to the cell surface. Loss of wzm blocks export and core ligation but not polymer synthesis, causing CPA to accumulate intracellularly on lipid carrier and preventing surface display (king2009reviewlipopolysaccharidebiosynthesis pages 25-27, rocchetta1999geneticsofoantigen pages 14-15)
Key structural features (gate helices, aromatic belt, channel) Structural studies of Wzm-Wzt homologs show Wzm forms a continuous transmembrane channel wide enough for linear polysaccharides; contains cytosolic and periplasmic gate helices, aromatic residues/aromatic belt near the periplasmic exit, and channel-lining aromatic/hydrophilic residues that coordinate the polymer during translocation (bi2018architectureofa pages 1-2, caffalette2021cryoemstructureof pages 1-2, caffalette2021cryoemstructureof pages 2-4)
Transport mechanism Best-supported current model is an ATP-driven processive channel mechanism, not classical alternating access: the lipid-linked O-polysaccharide is recruited, loaded into a continuous Wzm channel, and moved stepwise across the membrane as ATP binding/hydrolysis at Wzt drives conformational changes (spellmon2022molecularbasisfor pages 9-11, bi2018architectureofa pages 4-5, caffalette2021cryoemstructureof pages 4-6, bi2018architectureofa pages 1-2)

Table: This table summarizes the core identity, function, localization, substrate, and mechanism of the Wzm permease encoded by PA5451 in Pseudomonas aeruginosa PAO1. It is useful as a compact reference linking the PAO1 gene to the CPA/A-band O-antigen export pathway and to modern structural models of Wzm-Wzt transport.

2. Primary Function: ABC Transporter Permease for CPA O-Antigen Export

2.1 Substrate Specificity

Wzm is the integral membrane permease subunit of the Wzm–Wzt ABC transporter. Its substrate is the undecaprenyl-pyrophosphate (UndPP)-linked common polysaccharide antigen (CPA), also historically referred to as the A-band O-polysaccharide (king2009reviewlipopolysaccharidebiosynthesis pages 25-27, lam2011geneticandfunctional pages 8-9). The CPA is a neutral homopolymer of D-rhamnose (D-Rha), consisting of a trisaccharide repeating unit with the structure [→3)-α-D-Rha-(1→3)-α-D-Rha-(1→2)-α-D-Rha-(1→]ₙ (lam2011geneticandfunctional pages 8-9, king2009reviewlipopolysaccharidebiosynthesis pages 23-24). This D-rhamnan polymer is assembled on the cytoplasmic face of the inner membrane on a lipid carrier (UndPP), and Wzm–Wzt transports the completed polymer across the membrane to the periplasmic face (king2009reviewlipopolysaccharidebiosynthesis pages 21-23, king2009reviewlipopolysaccharidebiosynthesis pages 25-27).

2.2 Transport Function

Wzm works in obligate partnership with Wzt, the cytosolic ATP-binding/nucleotide-binding domain (NBD) subunit. Together, Wzm (TMD) and Wzt (NBD) form a functional ABC transporter heterodimer that mediates the energy-dependent export of lipid-linked CPA from the cytoplasm to the periplasm (king2009reviewlipopolysaccharidebiosynthesis pages 25-27, rocchetta1999geneticsofoantigen pages 14-15, caffalette2021cryoemstructureof pages 1-2). The Wzm protein contains approximately six transmembrane domains and is responsible for forming the polysaccharide translocation channel (valvano2003exportofospecific pages 8-9, bi2018architectureofa pages 1-2).

Experimental evidence directly demonstrates the essential role of Wzm: allele replacement mutagenesis of wzm in P. aeruginosa prevents export of CPA to the cell surface, although the polysaccharide is still synthesized intracellularly and remains attached to its isoprenyl-pyrophosphate lipid carrier in the cytoplasm (king2009reviewlipopolysaccharidebiosynthesis pages 25-27, rocchetta1999geneticsofoantigen pages 14-15). This intracellular accumulation can be detected by immunoelectron microscopy (rocchetta1999geneticsofoantigen pages 14-15). The inability to export CPA prevents its ligation to lipid A-core, which normally occurs only in the periplasm (rocchetta1999geneticsofoantigen pages 14-15, king2009reviewlipopolysaccharidebiosynthesis pages 25-27).

3. Subcellular Localization

Wzm is an integral inner membrane protein of P. aeruginosa. It is embedded in the cytoplasmic (inner) membrane with its transmembrane helices spanning the lipid bilayer, forming a translocation channel that connects the cytoplasmic and periplasmic faces of the membrane (king2009reviewlipopolysaccharidebiosynthesis pages 25-27, caffalette2021cryoemstructureof pages 1-2, bi2018architectureofa pages 1-2). The transporter exports its substrate from the cytoplasmic side to the periplasmic side of the inner membrane, where the CPA polymer is subsequently ligated to the lipid A-core oligosaccharide by the O-antigen ligase WaaL (king2009reviewlipopolysaccharidebiosynthesis pages 21-23).

4. Biosynthetic Pathway: ABC Transporter-Dependent CPA Biosynthesis

4.1 Pathway Overview

P. aeruginosa produces two structurally and serologically distinct O-antigen polysaccharides on its lipopolysaccharide (LPS): the CPA (A-band), a D-rhamnose homopolymer, and the O-specific antigen (OSA, B-band), a heteropolymer that varies between serotypes (king2009reviewlipopolysaccharidebiosynthesis pages 20-21, rocchetta1999geneticsofoantigen pages 6-8). These two O-antigens are synthesized through fundamentally different pathways. The CPA is produced via the ABC transporter-dependent pathway (Wzy-independent), whereas the OSA follows the Wzy-dependent pathway (rocchetta1999geneticsofoantigen pages 14-15, king2009reviewlipopolysaccharidebiosynthesis pages 20-21).

In the ABC transporter-dependent pathway, the CPA polymer is fully assembled on the cytoplasmic face of the inner membrane on an UndPP lipid anchor. After complete assembly, the entire lipid-linked polymer is exported across the inner membrane by the Wzm–Wzt ABC transporter, and then ligated to lipid A-core in the periplasm (king2009reviewlipopolysaccharidebiosynthesis pages 21-23, lam2011geneticandfunctional pages 8-9).

4.2 Gene Cluster and Enzymatic Steps

The CPA biosynthesis genes are organized in a cluster. The following table summarizes the roles of the key genes in this pathway:

Gene PA locus (PAO1) Function Role in CPA pathway
wbpL PA3146 Undecaprenyl-phosphate HexNAc-1-phosphate transferase that initiates O-polysaccharide assembly on the lipid carrier Initiates CPA synthesis on the cytoplasmic face of the inner membrane by adding the first sugar-phosphate to UndP; also required for initiation of OSA synthesis (king2009reviewlipopolysaccharidebiosynthesis pages 21-23)
algC not specified in retrieved evidence Phosphomannomutase/phosphoglucomutase contributing precursor formation for GDP-D-rhamnose biosynthesis Supplies mannose-1-phosphate precursor used upstream in GDP-D-rhamnose production for CPA assembly (lam2011geneticandfunctional pages 8-9)
wbpW not specified in retrieved evidence Phosphomannose isomerase Converts fructose-6-phosphate to mannose-6-phosphate in the precursor pathway leading to GDP-D-rhamnose for CPA biosynthesis (lam2011geneticandfunctional pages 8-9, king2009reviewlipopolysaccharidebiosynthesis pages 23-24)
gmd not specified in retrieved evidence GDP-mannose 4,6-dehydratase Converts GDP-mannose toward GDP-4-keto-6-deoxymannose in the GDP-D-rhamnose biosynthetic pathway that supplies CPA sugar donor (lam2011geneticandfunctional pages 8-9, king2009reviewlipopolysaccharidebiosynthesis pages 23-24)
rmd not specified in retrieved evidence GDP-4-keto-6-deoxymannose reductase Completes GDP-D-rhamnose synthesis, generating the activated sugar donor required for the D-rhamnan CPA polymer (lam2011geneticandfunctional pages 8-9, king2009reviewlipopolysaccharidebiosynthesis pages 23-24)
wbpX not specified in retrieved evidence Rhamnosyltransferase Adds D-rhamnose residues during assembly of the CPA trisaccharide repeat/polymer on the lipid carrier (lam2011geneticandfunctional pages 8-9, king2009reviewlipopolysaccharidebiosynthesis pages 25-27)
wbpY not specified in retrieved evidence Rhamnosyltransferase Adds D-rhamnose residues during assembly of the CPA trisaccharide repeat/polymer on the lipid carrier (lam2011geneticandfunctional pages 8-9, king2009reviewlipopolysaccharidebiosynthesis pages 25-27)
wbpZ not specified in retrieved evidence Rhamnosyltransferase Adds D-rhamnose residues during assembly of the CPA trisaccharide repeat/polymer on the lipid carrier; together with WbpX/WbpY builds the characteristic α-linked D-rhamnan structure (lam2011geneticandfunctional pages 8-9, king2009reviewlipopolysaccharidebiosynthesis pages 25-27)
wzm PA5451 ABC transporter permease / transmembrane domain (TMD) subunit Exports completed UndPP-linked CPA across the inner membrane to the periplasmic face for ligation to lipid A-core; loss blocks export but not polymer synthesis (king2009reviewlipopolysaccharidebiosynthesis pages 25-27, rocchetta1999geneticsofoantigen pages 14-15)
wzt not specified in retrieved evidence ABC transporter ATP-binding cassette ATPase / nucleotide-binding domain (NBD) subunit Provides ATP-driven energy for Wzm-Wzt-mediated export of completed CPA across the inner membrane; loss phenocopies wzm mutants with intracellular accumulation of lipid-linked CPA (king2009reviewlipopolysaccharidebiosynthesis pages 25-27, rocchetta1999geneticsofoantigen pages 14-15)

Table: This table summarizes the core genes requested for CPA/A-band O-antigen biosynthesis in P. aeruginosa PAO1, linking each gene to its enzymatic or transport role in the pathway. It is useful for mapping Wzm into the broader precursor synthesis, polymer assembly, and export steps of CPA production.

The biosynthetic pathway proceeds through: (1) synthesis of GDP-D-rhamnose from central metabolic precursors via AlgC, WbpW, Gmd, and Rmd; (2) initiation of polymer assembly on UndP by WbpL; (3) polymerization of the D-rhamnose trisaccharide repeating units by rhamnosyltransferases WbpX, WbpY, and WbpZ; (4) export of the completed UndPP-linked polymer by the Wzm–Wzt ABC transporter; and (5) ligation to lipid A-core in the periplasm (lam2011geneticandfunctional pages 8-9, king2009reviewlipopolysaccharidebiosynthesis pages 25-27, king2009reviewlipopolysaccharidebiosynthesis pages 21-23). Additional genes (PA5455–PA5459) encoding methyltransferases and acetyltransferases are also required for CPA biosynthesis (lam2011geneticandfunctional pages 9-10).

5. Structural Biology of the Wzm–Wzt Transporter

While structural studies have not been performed directly on P. aeruginosa Wzm, extensive structural characterization of homologous Wzm–Wzt transporters from Aquifex aeolicus and Mycobacterium abscessus provides detailed insight into the architecture of this transporter family, which is directly relevant to understanding the P. aeruginosa protein.

5.1 Transmembrane Architecture

The crystal structure of the A. aeolicus Wzm–Wzt homolog revealed that each Wzm protomer contains six transmembrane helices (TM1–TM6), preceded by an N-terminal amphipathic interface helix (bi2018architectureofa pages 1-2, bi2018architectureofa pages 2-3, caffalette2021cryoemstructureof pages 2-2). Two Wzm protomers interact closely through TM1 and TM5 to form a large continuous transmembrane channel spanning the entire membrane width, which is sufficiently wide (accessible to a ~3.5 Å radius probe) to accommodate linear polysaccharide chains (bi2018architectureofa pages 2-3). The channel features three layers of aromatic residues that coordinate the polysaccharide substrate through CH–π stacking interactions (bi2018architectureofa pages 2-3).

5.2 Gate Helices and Aromatic Belt

Key structural features include gate helices at both the cytosolic and periplasmic membrane interfaces, which serve as substrate entry and exit points, respectively (bi2018architectureofa pages 1-2). The periplasmic gate helices (PG1 and PG2) are formed by the TM5/TM6 loop, while the cytosolic gate helix is contributed by the Wzt NBD and packs against the Wzm protomer interface (bi2018architectureofa pages 1-2, caffalette2021cryoemstructureof pages 2-2). An aromatic belt near the periplasmic channel exit, composed of conserved residues such as Tyr39, Phe180, and Trp181, seals the transporter in its resting ATP-bound state (caffalette2021cryoemstructureof pages 1-2, caffalette2021cryoemstructureof pages 2-4). These aromatic residues dilate during substrate translocation to form the open channel (spellmon2022molecularbasisfor pages 7-8).

5.3 Conformational States

Cryo-EM structures have revealed multiple conformational states of the transporter. In the ATP-bound resting state, the channel is closed with an asymmetric architecture showing one open and one closed portal at both cytosolic and periplasmic sides (caffalette2021cryoemstructureof pages 1-2). The nucleotide-free (apo) state shows the widest channel diameter, suggesting that conformational cycling between these states drives polysaccharide translocation (caffalette2021cryoemstructureof pages 4-6). Recent cryo-EM studies of the mycobacterial Wzm–Wzt homolog have confirmed that the cytosolic gate helix plays a key functional role in polysaccharide transport, and that the hydrophobic polyprenyl lipid moiety is translocated first, followed by the polysaccharide chain (garaeva2026structuralbasisof pages 2-3).

6. Transport Mechanism

6.1 Processive Channel Mechanism

The Wzm–Wzt transporter operates through a processive channel-forming mechanism that is distinct from the classical alternating access mechanism used by most ABC transporters (bi2018architectureofa pages 1-2, spellmon2022molecularbasisfor pages 9-11). This mechanism is better suited for translocating high-molecular-mass polysaccharides. The transporter forms a continuous transmembrane channel, and the polysaccharide is ratcheted through this channel at the expense of ATP hydrolysis (spellmon2022molecularbasisfor pages 9-11, caffalette2021cryoemstructureof pages 4-6).

6.2 Role of ATP Hydrolysis

ATP hydrolysis at the Wzt NBDs drives repeated cycles of conformational changes in the Wzm TMDs that energize processive polymer translocation (bi2018architectureofa pages 4-5, caffalette2021cryoemstructureof pages 4-6). ATP-induced NBD closure triggers rigid-body movements of the Wzm protomers around a central helix axis, modulating channel width and facilitating stepwise translocation (caffalette2021cryoemstructureof pages 4-6). Notably, studies on the A. aeolicus system showed that O-antigen cap binding to the carbohydrate-binding domain (CBD) of Wzt causes stalling of ATPase activity, which may position the lipid moiety at the channel entrance before the transport cycle begins (spellmon2022molecularbasisfor pages 9-11). Multiple rounds of ATP hydrolysis then drive the actual polymer translocation process (spellmon2022molecularbasisfor pages 9-11).

6.3 Substrate Recognition via the Carbohydrate-Binding Domain

In many Wzm–Wzt systems, the Wzt subunit possesses a carbohydrate-binding domain (CBD) that recognizes the chemically modified nonreducing terminus of the O-antigen polymer (spellmon2022molecularbasisfor pages 9-11). In P. aeruginosa, the CPA polymer appears to have modifications at its nonreducing terminal residue, likely methylation, which may serve as a signal for recognition and translocation competency (king2009reviewlipopolysaccharidebiosynthesis pages 25-27). The CBD recruits the lipid-linked substrate to the transporter, increasing local concentration and facilitating channel loading (spellmon2022molecularbasisfor pages 9-11).

7. Biological Significance and Role in Pathogenesis

7.1 CPA in Chronic Infection

CPA is produced by the majority of P. aeruginosa isolates and is particularly significant in chronic infections. In cystic fibrosis (CF) patients with chronic P. aeruginosa lung infections, clinical isolates characteristically maintain CPA expression while losing B-band (OSA) O-antigen expression (rocchetta1999geneticsofoantigen pages 3-4). A study of 250 CF patient isolates found that 68% expressed A-band LPS but none expressed B-band O-antigen (rocchetta1999geneticsofoantigen pages 3-4). This selective enrichment of CPA during chronic CF infection suggests it provides a survival advantage in the host environment (lam2011geneticandfunctional pages 9-10).

7.2 CPA and Bacterial Adherence

CPA contributes to bacterial adherence to human epithelial cells. A CPA-deficient mutant (rmd knockout, defective in GDP-D-rhamnose synthesis) showed significantly reduced efficiency in adhering to cultured human bronchial epithelial cells, with mutant bacteria attaching as isolated bacteria rather than forming microcolonies (king2009reviewlipopolysaccharidebiosynthesis pages 4-5, lam2011geneticandfunctional pages 9-10).

7.3 CPA and Immune Modulation

Unlike B-band O-antigen, CPA alone does not confer serum resistance or protect against complement-mediated lysis (rocchetta1999geneticsofoantigen pages 3-4). Antibodies against A-band LPS are not protective in animal models, in contrast to anti-B-band antibodies that are highly protective (rocchetta1999geneticsofoantigen pages 3-4). However, CPA serves as a receptor for bacteriophage A7, indicating its significance as a cell surface determinant co-evolving with phage predation (lam2011geneticandfunctional pages 8-9).

7.4 CPA and Virulence Regulation

Interestingly, when both OSA and CPA are absent from P. aeruginosa, there are pronounced increases in expression of type III secretion system (T3SS) effector genes (exoS, exoT) and associated regulatory genes (exsA, pcrV), along with increased cytotoxicity in both in vitro and in vivo models (lam2011geneticandfunctional pages 18-19). This suggests that the presence of CPA on the cell surface functions as a negative modulator of T3SS-mediated virulence (lam2011geneticandfunctional pages 18-19).

8. Evolutionary Context

The Wzm–Wzt transporter system is broadly conserved across Gram-negative and Gram-positive bacteria for the export of diverse cell surface glycoconjugates. Homologous systems have been characterized in Escherichia coli, Klebsiella pneumoniae, Rhizobium etli, Myxococcus xanthus, and Mycobacterium species, where they transport structurally diverse polysaccharides including O-antigens, capsular polysaccharides, and arabinogalactan precursors (valvano2003exportofospecific pages 8-9, garaeva2026structuralbasisof pages 2-3). The functional interchangeability of Wzm components between different bacterial species has been demonstrated, underscoring the conservation of this transport mechanism (king2009reviewlipopolysaccharidebiosynthesis pages 25-27). The ABC-2 family classification of Wzm proteins reflects their shared evolutionary origin and conserved structural architecture across diverse bacterial lineages.

9. Summary

Wzm (PA5451) in P. aeruginosa PAO1 is an essential inner membrane ABC transporter permease that exports the UndPP-linked D-rhamnose homopolymer (CPA/A-band O-antigen) from the cytoplasm to the periplasm. It functions as a homodimeric transmembrane channel in partnership with the Wzt ATPase, using a processive, ATP-driven channel mechanism to translocate the polysaccharide substrate. Structural studies of homologs reveal a channel formed by six transmembrane helices per protomer, with gate helices and an aromatic belt controlling substrate access. CPA export by Wzm–Wzt is essential for surface display of A-band LPS, which plays roles in epithelial cell adherence, chronic infection maintenance in cystic fibrosis, and modulation of virulence factor expression in P. aeruginosa.

References

  1. (king2009reviewlipopolysaccharidebiosynthesis pages 25-27): Jerry D. King, Dana Kocíncová, Erin L. Westman, and Joseph S. Lam. Review: lipopolysaccharide biosynthesis in pseudomonas aeruginosa. Innate Immunity, 15:261-312, Aug 2009. URL: https://doi.org/10.1177/1753425909106436, doi:10.1177/1753425909106436. This article has 451 citations and is from a peer-reviewed journal.

  2. (rocchetta1999geneticsofoantigen pages 14-15): H. L. Rocchetta, L. L. Burrows, and J. S. Lam. Genetics of o-antigen biosynthesis inpseudomonas aeruginosa. Microbiology and Molecular Biology Reviews, 63:523-553, Sep 1999. URL: https://doi.org/10.1128/mmbr.63.3.523-553.1999, doi:10.1128/mmbr.63.3.523-553.1999. This article has 488 citations and is from a domain leading peer-reviewed journal.

  3. (valvano2003exportofospecific pages 8-9): Miguel A Valvano. Export of o-specific lipopolysaccharide. Frontiers in bioscience : a journal and virtual library, 8:s452-71, May 2003. URL: https://doi.org/10.2741/1079, doi:10.2741/1079. This article has 194 citations.

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  5. (king2009reviewlipopolysaccharidebiosynthesis pages 21-23): Jerry D. King, Dana Kocíncová, Erin L. Westman, and Joseph S. Lam. Review: lipopolysaccharide biosynthesis in pseudomonas aeruginosa. Innate Immunity, 15:261-312, Aug 2009. URL: https://doi.org/10.1177/1753425909106436, doi:10.1177/1753425909106436. This article has 451 citations and is from a peer-reviewed journal.

  6. (caffalette2021cryoemstructureof pages 1-2): Christopher A. Caffalette and Jochen Zimmer. Cryo-em structure of the full-length wzmwzt abc transporter required for lipid-linked o antigen transport. Dec 2021. URL: https://doi.org/10.1073/pnas.2016144118, doi:10.1073/pnas.2016144118. This article has 32 citations and is from a highest quality peer-reviewed journal.

  7. (bi2018architectureofa pages 1-2): Yunchen Bi, Evan Mann, Chris Whitfield, and Jochen Zimmer. Architecture of a channel-forming o-antigen polysaccharide abc transporter. Jan 2018. URL: https://doi.org/10.1038/nature25190, doi:10.1038/nature25190. This article has 118 citations and is from a highest quality peer-reviewed journal.

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  9. (caffalette2021cryoemstructureof pages 2-2): Christopher A. Caffalette and Jochen Zimmer. Cryo-em structure of the full-length wzmwzt abc transporter required for lipid-linked o antigen transport. Dec 2021. URL: https://doi.org/10.1073/pnas.2016144118, doi:10.1073/pnas.2016144118. This article has 32 citations and is from a highest quality peer-reviewed journal.

  10. (king2009reviewlipopolysaccharidebiosynthesis pages 20-21): Jerry D. King, Dana Kocíncová, Erin L. Westman, and Joseph S. Lam. Review: lipopolysaccharide biosynthesis in pseudomonas aeruginosa. Innate Immunity, 15:261-312, Aug 2009. URL: https://doi.org/10.1177/1753425909106436, doi:10.1177/1753425909106436. This article has 451 citations and is from a peer-reviewed journal.

  11. (caffalette2021cryoemstructureof pages 2-4): Christopher A. Caffalette and Jochen Zimmer. Cryo-em structure of the full-length wzmwzt abc transporter required for lipid-linked o antigen transport. Dec 2021. URL: https://doi.org/10.1073/pnas.2016144118, doi:10.1073/pnas.2016144118. This article has 32 citations and is from a highest quality peer-reviewed journal.

  12. (spellmon2022molecularbasisfor pages 9-11): Nicholas Spellmon, Artur Muszyński, Ireneusz Górniak, Jiri Vlach, David Hahn, Parastoo Azadi, and Jochen Zimmer. Molecular basis for polysaccharide recognition and modulated atp hydrolysis by the o antigen abc transporter. Nature Communications, Sep 2022. URL: https://doi.org/10.1038/s41467-022-32597-2, doi:10.1038/s41467-022-32597-2. This article has 20 citations and is from a highest quality peer-reviewed journal.

  13. (bi2018architectureofa pages 4-5): Yunchen Bi, Evan Mann, Chris Whitfield, and Jochen Zimmer. Architecture of a channel-forming o-antigen polysaccharide abc transporter. Jan 2018. URL: https://doi.org/10.1038/nature25190, doi:10.1038/nature25190. This article has 118 citations and is from a highest quality peer-reviewed journal.

  14. (caffalette2021cryoemstructureof pages 4-6): Christopher A. Caffalette and Jochen Zimmer. Cryo-em structure of the full-length wzmwzt abc transporter required for lipid-linked o antigen transport. Dec 2021. URL: https://doi.org/10.1073/pnas.2016144118, doi:10.1073/pnas.2016144118. This article has 32 citations and is from a highest quality peer-reviewed journal.

  15. (king2009reviewlipopolysaccharidebiosynthesis pages 23-24): Jerry D. King, Dana Kocíncová, Erin L. Westman, and Joseph S. Lam. Review: lipopolysaccharide biosynthesis in pseudomonas aeruginosa. Innate Immunity, 15:261-312, Aug 2009. URL: https://doi.org/10.1177/1753425909106436, doi:10.1177/1753425909106436. This article has 451 citations and is from a peer-reviewed journal.

  16. (rocchetta1999geneticsofoantigen pages 6-8): H. L. Rocchetta, L. L. Burrows, and J. S. Lam. Genetics of o-antigen biosynthesis inpseudomonas aeruginosa. Microbiology and Molecular Biology Reviews, 63:523-553, Sep 1999. URL: https://doi.org/10.1128/mmbr.63.3.523-553.1999, doi:10.1128/mmbr.63.3.523-553.1999. This article has 488 citations and is from a domain leading peer-reviewed journal.

  17. (lam2011geneticandfunctional pages 9-10): Joseph S. Lam, Véronique L. Taylor, Salim T. Islam, Youai Hao, and Dana Kocíncová. Genetic and functional diversity of pseudomonas aeruginosa lipopolysaccharide. Frontiers in Microbiology, Apr 2011. URL: https://doi.org/10.3389/fmicb.2011.00118, doi:10.3389/fmicb.2011.00118. This article has 386 citations and is from a peer-reviewed journal.

  18. (spellmon2022molecularbasisfor pages 7-8): Nicholas Spellmon, Artur Muszyński, Ireneusz Górniak, Jiri Vlach, David Hahn, Parastoo Azadi, and Jochen Zimmer. Molecular basis for polysaccharide recognition and modulated atp hydrolysis by the o antigen abc transporter. Nature Communications, Sep 2022. URL: https://doi.org/10.1038/s41467-022-32597-2, doi:10.1038/s41467-022-32597-2. This article has 20 citations and is from a highest quality peer-reviewed journal.

  19. (garaeva2026structuralbasisof pages 2-3): Alisa A. Garaeva, Viktória Fabianová, Karin Savková, Stanislav Huszár, Xiaochao Xue, Todd L. Lowary, Katarína Mikušová, and Markus A. Seeger. Structural basis of lipid-linked galactan export by the mycobacterial abc transporter wzm-wzt. Nature Communications, Mar 2026. URL: https://doi.org/10.1038/s41467-026-70429-9, doi:10.1038/s41467-026-70429-9. This article has 0 citations and is from a highest quality peer-reviewed journal.

  20. (rocchetta1999geneticsofoantigen pages 3-4): H. L. Rocchetta, L. L. Burrows, and J. S. Lam. Genetics of o-antigen biosynthesis inpseudomonas aeruginosa. Microbiology and Molecular Biology Reviews, 63:523-553, Sep 1999. URL: https://doi.org/10.1128/mmbr.63.3.523-553.1999, doi:10.1128/mmbr.63.3.523-553.1999. This article has 488 citations and is from a domain leading peer-reviewed journal.

  21. (king2009reviewlipopolysaccharidebiosynthesis pages 4-5): Jerry D. King, Dana Kocíncová, Erin L. Westman, and Joseph S. Lam. Review: lipopolysaccharide biosynthesis in pseudomonas aeruginosa. Innate Immunity, 15:261-312, Aug 2009. URL: https://doi.org/10.1177/1753425909106436, doi:10.1177/1753425909106436. This article has 451 citations and is from a peer-reviewed journal.

  22. (lam2011geneticandfunctional pages 18-19): Joseph S. Lam, Véronique L. Taylor, Salim T. Islam, Youai Hao, and Dana Kocíncová. Genetic and functional diversity of pseudomonas aeruginosa lipopolysaccharide. Frontiers in Microbiology, Apr 2011. URL: https://doi.org/10.3389/fmicb.2011.00118, doi:10.3389/fmicb.2011.00118. This article has 386 citations and is from a peer-reviewed journal.

Artifacts

Citations

  1. rocchetta1999geneticsofoantigen pages 14-15
  2. king2009reviewlipopolysaccharidebiosynthesis pages 21-23
  3. lam2011geneticandfunctional pages 8-9
  4. lam2011geneticandfunctional pages 9-10
  5. bi2018architectureofa pages 2-3
  6. bi2018architectureofa pages 1-2
  7. spellmon2022molecularbasisfor pages 7-8
  8. caffalette2021cryoemstructureof pages 1-2
  9. caffalette2021cryoemstructureof pages 4-6
  10. garaeva2026structuralbasisof pages 2-3
  11. spellmon2022molecularbasisfor pages 9-11
  12. king2009reviewlipopolysaccharidebiosynthesis pages 25-27
  13. rocchetta1999geneticsofoantigen pages 3-4
  14. lam2011geneticandfunctional pages 18-19
  15. valvano2003exportofospecific pages 8-9
  16. caffalette2021cryoemstructureof pages 2-2
  17. king2009reviewlipopolysaccharidebiosynthesis pages 20-21
  18. caffalette2021cryoemstructureof pages 2-4
  19. bi2018architectureofa pages 4-5
  20. king2009reviewlipopolysaccharidebiosynthesis pages 23-24
  21. rocchetta1999geneticsofoantigen pages 6-8
  22. king2009reviewlipopolysaccharidebiosynthesis pages 4-5
  23. →3)-α-D-Rha-(1→3)-α-D-Rha-(1→2)-α-D-Rha-(1→
  24. https://doi.org/10.1177/1753425909106436,
  25. https://doi.org/10.1128/mmbr.63.3.523-553.1999,
  26. https://doi.org/10.2741/1079,
  27. https://doi.org/10.3389/fmicb.2011.00118,
  28. https://doi.org/10.1073/pnas.2016144118,
  29. https://doi.org/10.1038/nature25190,
  30. https://doi.org/10.1038/s41467-022-32597-2,
  31. https://doi.org/10.1038/s41467-026-70429-9,