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qscR qscR phzH phzH pqsA pqsA pqsB pqsB pqsC pqsC pqsD pqsD pqsE pqsE mvfR mvfR lasR lasR lasI lasI phzB2 phzB2 phzD2 phzD2 phzF2 phzF2 pqsH pqsH rhlI rhlI rhlR rhlR rhl rhl phzM phzM phzS phzS
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query proteins and first shell of interactors
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second shell of interactors
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proteins of unknown 3D structure
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a 3D structure is known or predicted
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qscRQuorum-sensing control repressor; Product name confidence: Class 1 (Function experimentally demonstrated in P. aeruginosa). (237 aa)
phzHPotential phenazine-modifying enzyme; Product name confidence: Class 2 (High similarity to functionally studied protein). (610 aa)
pqsAProbable coenzyme A ligase; Catalyzes the formation of anthraniloyl-CoA, which is the priming step for entry into the Pseudomonas quinolone signal (PQS) biosynthetic pathway. Also active on a variety of aromatic substrates, including benzoate and chloro and fluoro derivatives of anthranilate. (517 aa)
pqsBPqsB; Required for the biosynthesis of the quorum-sensing signaling molecules 2-heptyl-4(1H)-quinolone (HHQ) and 2-heptyl-3-hydroxy-4(1H)- quinolone (Pseudomonas quinolone signal or PQS), which are important for biofilm formation and virulence. The PqsC/PqsB complex catalyzes the condensation of 2-aminobenzoylacetate (2-ABA) and octanoyl-CoA to form HHQ. PqsB, together with PqsC, catalyzes the coupling of 2-ABA with the octanoate group, leading to decarboxylation and dehydration, and resulting in closure of the quinoline ring. PqsB is probably required for the proper folding of PqsC ra [...] (283 aa)
pqsCPqsC; Required for the biosynthesis of the quorum-sensing signaling molecules 2-heptyl-4(1H)-quinolone (HHQ) and 2-heptyl-3-hydroxy-4(1H)- quinolone (Pseudomonas quinolone signal or PQS), which are important for biofilm formation and virulence. The PqsC/PqsB complex catalyzes the condensation of 2-aminobenzoylacetate (2-ABA) and octanoyl-CoA to form HHQ. First, PqsC acquires an octanoyl group from octanoyl-CoA and forms an octanoyl-PqsC intermediate. Then, together with PqsB, it catalyzes the coupling of 2-ABA with the octanoate group, leading to decarboxylation and dehydration, and re [...] (348 aa)
pqsD3-oxoacyl-[acyl-carrier-protein] synthase III; Required for the biosynthesis of a number of signaling molecules, such as the quinolone signal 2-heptyl-3-hydroxy-4(1H)- quinolone (PQS), 2-heptyl-4-hydroxyquinoline (HHQ) and 2,4- dihydroxyquinoline (DHQ). These molecules are required for normal biofilm formation. Catalyzes the transfer of the anthraniloyl moiety from anthraniloyl-CoA to malonyl-CoA to form 2-aminobenzoylacetyl-CoA. The first step of the reaction is the formation of a covalent anthraniloyl-PqsD intermediate. Next, the short-lived intermediate 3-(2-aminophenyl)- 3-oxopropa [...] (337 aa)
pqsEQuinolone signal response protein; Required for the biosynthesis of the quorum-sensing signaling molecules 2-heptyl-4(1H)-quinolone (HHQ) and 2-heptyl-3-hydroxy-4(1H)- quinolone (Pseudomonas quinolone signal or PQS), which are important for biofilm formation and virulence. Catalyzes the hydrolysis of the intermediate 2-aminobenzoylacetyl-CoA (2-ABA-CoA) to form 2- aminobenzoylacetate (2-ABA), the precursor of HHQ. In vitro, can also hydrolyze other substrates such as S-ethyl-acetothioacetate and acetoacetyl-CoA, but is inactive against anthraniloyl-CoA, malonyl-CoA and octanoyl-CoA. Be [...] (301 aa)
mvfRTranscriptional regulator MvfR; Transcription regulator that plays a critical role in virulence by positively regulating the expression of multiple quorum sensing (QS)-regulated virulence factors, genes involved in protein secretion, translation, response to oxidative stress and the phnAB operon. At the stationary phase, negatively autoregulates its function through cleavage and translocation to the extracellular space ; Belongs to the LysR transcriptional regulatory family. (332 aa)
lasRTranscriptional regulator LasR; Transcriptional activator of elastase structural gene (LasB). Binds to the PAI autoinducer; Belongs to the autoinducer-regulated transcriptional regulatory protein family. (239 aa)
lasIAutoinducer synthesis protein LasI; Required for the synthesis of PAI consisting of 3-oxo-N- (tetrahydro-2-oxo-3-furanyl)-dodecanamide also known as N-(3- oxododecanoyl)homoserine lactone, an autoinducer molecule which binds to LasR and thus acts in elastase biosynthesis regulation. (201 aa)
phzB2Probable phenazine biosynthesis protein; Involved in the biosynthesis of the antibiotic phenazine, a nitrogen-containing heterocyclic molecule having important roles in virulence, competition and biological control. PhzB2 (operon phzA2B2C2E2F2G2) has a role in the biosynthesis of the phenazine during both planktonic growth and biofilm development, and in host infection during biofilm development; Belongs to the PhzA/PhzB family. (162 aa)
phzD2Phenazine biosynthesis protein PhzD; Involved in the biosynthesis of the antibiotic phenazine, a nitrogen-containing heterocyclic molecule. PhzD1 (operon phzA1B1C1E1F1G1) has a role in the biosynthesis of the phenazine during planktonic growth. Catalyzes the hydrolysis of the vinyl ether functional group of 2-amino-2-deoxyisochorismate (ADIC), yielding pyruvate and trans-2,3-dihydro-3-hydroxyanthranilic acid (DHHA). Also able to act on isochorismate, chorismate and 4-amino-4-deoxychorismate (ADC) as substrates ; Belongs to the isochorismatase family. (207 aa)
phzF2Probable phenazine biosynthesis protein; Isomerase that catalyzes the condensation of two molecules of trans-2,3-dihydro-3-hydroxyanthranilic acid (DHHA) into the phenazine ring system. The final product is not yet known. (278 aa)
pqsHProbable FAD-dependent monooxygenase; Involved in the terminal step of the biosynthesis of quinolone which in addition to serve as a potent signal for quorum sensing, chelates iron and promotes the formation of membrane vesicles (MVs). Catalyzes the hydroxylation of 2-heptyl-4-quinolone (C7-HHQ) to yield 2-heptyl-3-hydroxy-4-quinolone (PQS). Belongs to the 3-hydroxybenzoate 6-hydroxylase family. (382 aa)
rhlIAutoinducer synthesis protein RhlI; Required for the synthesis of BHL (N-butanoyl-L-homoserine lactone), and HHL (N-hexanoyl-L-homoserine lactone) autoinducer molecules which bind to RhlR and thus acts in elastase biosynthesis regulation. (201 aa)
rhlRTranscriptional regulator RhlR; Necessary for transcriptional activation of the rhlAB genes encoding the rhamnosyltransferase. It also functions as a transcriptional activator of elastase structural gene (lasB). Binds to autoinducer molecules BHL (N-butanoyl-L-homoserine lactone), and HHL (N-hexanoyl-L-homoserine lactone). (241 aa)
rhlATP-dependent RNA helicase RhlB; DEAD-box RNA helicase involved in RNA degradation. Has RNA- dependent ATPase activity and unwinds double-stranded RNA. Belongs to the DEAD box helicase family. RhlB subfamily. (397 aa)
phzMProbable phenazine-specific methyltransferase; Involved in the biosynthesis of pyocyanine, a blue-pigmented phenazine derivative, which plays a role in virulence. Converts phenazine-1-carboxylate (PCA) to 5-methylphenazine-1-carboxylate (5- methyl-PCA); Belongs to the class I-like SAM-binding methyltransferase superfamily. Cation-independent O-methyltransferase family. (334 aa)
phzSFlavin-containing monooxygenase; Involved in the biosynthesis of pyocyanine, a blue-pigmented phenazine derivative, which plays a role in virulence. Catalyzes the oxidative decarboxylation of 5-methylphenazine-1-carboxylate (5-methyl- PCA) to pyocyanine. Can also act on phenazine-1-carboxylate (PCA), converting it into 1-hydroxyphenazine (1-HP). However, PCA is a poor substrate. (402 aa)
Your Current Organism:
Pseudomonas aeruginosa
NCBI taxonomy Id: 208964
Other names: P. aeruginosa PAO1, Pseudomonas aeruginosa PAO1, Pseudomonas sp. PAO1
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