flagellar motor switch protein FliM is one of three proteins (FliG, FliN, FliM) that form the rotor-mounted switch complex (C ring) located at the base of the basal body
flagellar motor switch protein FliM; Members of this family are the flagellar motor switch ...
4-322
3.14e-140
flagellar motor switch protein FliM; Members of this family are the flagellar motor switch protein FliM. The family excludes FliM homologs that lack an N-terminal region critical to interaction with phosphorylated CheY. One set lacking this N-terminal region is found in Rhizobium meliloti, in which the direction of flagellar rotation is not reversible (i.e. the FliM homolog does not act to reverse the motor direction), and in related species. Another is found in Buchnera, an obligate intracellular endosymbiont with genes for many of the components of the flagellar apparatus, but not, apparently, for flagellin iself. [Cellular processes, Chemotaxis and motility]
Pssm-ID: 130464 [Multi-domain] Cd Length: 320 Bit Score: 399.77 E-value: 3.14e-140
flagellar protein FliM; This family contains bacterial flagellar protein FliM which is ...
48-229
3.80e-73
flagellar protein FliM; This family contains bacterial flagellar protein FliM which is localized in the flagellar switch complex along with FliG and FliY; all are present in many copies, and together they correspond structurally to the C-ring of the flagellar basal body. FliM does not contain the CheC consensus sequence of the phosphatase active site ([DS]xxxExxNx(22)P) and is not a CheY-P phosphatase. FliM sits in the center of the rotor with the N-terminal region interacting with the signaling protein, phosphorylated CheY (CheY-P). The activated form of CheY destabilizes the parallel arrangement of FliM molecules, and perturbs FliG alignment in a process that may reflect the onset of rotation switching. This suggests a model of C-ring assembly in which intermolecular contacts among FliG domains provide a template for FliM assembly. Recent data show that binding of FliM to spermine synthase, SpeE, contributes to flagellar motility, an association that is unique to Helicobacter species.
Pssm-ID: 381736 Cd Length: 181 Bit Score: 223.93 E-value: 3.80e-73
flagellar motor switch protein FliM; Members of this family are the flagellar motor switch ...
4-322
3.14e-140
flagellar motor switch protein FliM; Members of this family are the flagellar motor switch protein FliM. The family excludes FliM homologs that lack an N-terminal region critical to interaction with phosphorylated CheY. One set lacking this N-terminal region is found in Rhizobium meliloti, in which the direction of flagellar rotation is not reversible (i.e. the FliM homolog does not act to reverse the motor direction), and in related species. Another is found in Buchnera, an obligate intracellular endosymbiont with genes for many of the components of the flagellar apparatus, but not, apparently, for flagellin iself. [Cellular processes, Chemotaxis and motility]
Pssm-ID: 130464 [Multi-domain] Cd Length: 320 Bit Score: 399.77 E-value: 3.14e-140
flagellar protein FliM; This family contains bacterial flagellar protein FliM which is ...
48-229
3.80e-73
flagellar protein FliM; This family contains bacterial flagellar protein FliM which is localized in the flagellar switch complex along with FliG and FliY; all are present in many copies, and together they correspond structurally to the C-ring of the flagellar basal body. FliM does not contain the CheC consensus sequence of the phosphatase active site ([DS]xxxExxNx(22)P) and is not a CheY-P phosphatase. FliM sits in the center of the rotor with the N-terminal region interacting with the signaling protein, phosphorylated CheY (CheY-P). The activated form of CheY destabilizes the parallel arrangement of FliM molecules, and perturbs FliG alignment in a process that may reflect the onset of rotation switching. This suggests a model of C-ring assembly in which intermolecular contacts among FliG domains provide a template for FliM assembly. Recent data show that binding of FliM to spermine synthase, SpeE, contributes to flagellar motility, an association that is unique to Helicobacter species.
Pssm-ID: 381736 Cd Length: 181 Bit Score: 223.93 E-value: 3.80e-73
Type III flagellar switch regulator (C-ring) FliN C-term; This family includes the C-terminal ...
259-322
4.21e-14
Type III flagellar switch regulator (C-ring) FliN C-term; This family includes the C-terminal region of flagellar motor switch proteins FliN and FliM. It is associated with family FliM, pfam02154 and family FliN_N pfam16973.
Pssm-ID: 460043 [Multi-domain] Cd Length: 66 Bit Score: 66.21 E-value: 4.21e-14
CheC/CheX/FliY (CXY) family phosphatases; The CXY family includes CheY-P-hydrolyzing proteins ...
57-220
3.22e-06
CheC/CheX/FliY (CXY) family phosphatases; The CXY family includes CheY-P-hydrolyzing proteins that function in bacterial chemotaxis, which involves cellular processes that control the movement of organisms toward favorable environments via rotating flagella, which in turn determines the sense of rotation by the intracellular response regulator CheY. When phosphorylated, CheY-P interacts directly with the flagellar motor, and this signal is terminated by the CXY family of phosphatases (Escherichia coli uses CheZ). CheC acts as a weak CheY-P phosphatase but increases activity in the presence of CheD. Bacillus subtilis has only CheC and FliY while many systems also have CheX. CheC and CheX appear to be primarily involved in restoring normal CheY-P levels, whereas FliY seems to act on CheY-P constitutively. Unlike CheC and CheX, FliY is localized in the flagellar switch complex, which also contains the stator-coupling protein FliG and the target of CheY-P, FliM. CheC, CheX, and FliY phosphatases share a consensus sequence ([DS]xxxExxNx(22)P) with four conserved residues thought to form the phosphatase active site. CheC class I and FliY each have two active sites, while CheC class II and III, and CheX have only one. This family also includes FliM, a component of the flagellar switch complex and a target of CheY, which lacks the phosphatase active site consensus sequence, and is not a CheY phosphatase.
Pssm-ID: 381732 [Multi-domain] Cd Length: 162 Bit Score: 46.34 E-value: 3.22e-06
flagellar motor switch protein FliY; This family contains the flagellar rotor protein FliY, a ...
69-231
3.44e-04
flagellar motor switch protein FliY; This family contains the flagellar rotor protein FliY, a highly conserved and essential member of the CheC phosphatase family, that distinguishes flagellar architecture and function in different types of bacteria. Unlike CheC and CheX, FliY is localized in the flagellar switch complex, which also contains the stator-coupling protein FliG and the target of CheY-P, FliM, all present in many copies, and together corresponding structurally to the C-ring of the flagellar basal body. FliY structure resembles that of the rotor protein FliM but contains two active centers for CheY dephosphorylation. In bacteria such as Thermotogae and Bacilli, FliY is fused to FliN. It incorporates properties of the FliM/FliN rotor proteins and the CheC/CheX phosphatases to serve multiple functions in the flagellar switch. FliY seems to act on CheY-P constitutively, as compared to CheC and CheX that appear to be primarily involved in restoring normal CheY-P levels.
Pssm-ID: 381735 [Multi-domain] Cd Length: 191 Bit Score: 40.93 E-value: 3.44e-04
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
of the residues that compose this conserved feature have been mapped to the query sequence.
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