Hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR); Hydroxymethylglutaryl-coenzyme A ...
11-344
3.08e-115
Hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR); Hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR) is a tightly regulated enzyme, which catalyzes the synthesis of coenzyme A and mevalonate in isoprenoid synthesis. In mammals, this is the rate limiting committed step in cholesterol biosynthesis. Bacteria, such as Pseudomonas mevalonii, which rely solely on mevalonate for their carbon source, catalyze the reverse reaction, using an NAD-dependent HMGR to deacetylate mevalonate into 3-hydroxy-3-methylglutaryl-CoA. There are two classes of HMGR: class I enzymes which are found predominantly in eukaryotes and contain N-terminal membrane regions and class II enzymes which are found primarily in prokaryotes and are soluble as they lack the membrane region. With the exception of Archaeoglobus fulgidus, most archeae are assigned to class I, based on sequence similarity of the active site, even though they lack membrane regions. Yeast and human HMGR are divergent in their N-terminal regions, but are conserved in their active site. In contrast, human and bacterial HMGR differ in their active site architecture. While the prokaryotic enzyme is a homodimer, the eukaryotic enzyme is a homotetramer.
The actual alignment was detected with superfamily member cd00643:
Pssm-ID: 469656 Cd Length: 403 Bit Score: 339.91 E-value: 3.08e-115
Class I hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR); ...
11-344
3.08e-115
Class I hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR); Hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR), class I enzyme, homotetramer. Catalyzes the synthesis of coenzyme A and mevalonate in isoprenoid synthesis. In mammals this is the rate limiting committed step in cholesterol biosynthesis. Class I enzymes are found predominantly in eukaryotes and contain N-terminal membrane regions. With the exception of Archaeoglobus fulgidus, most archeae are assigned to class I, based on sequence similarity of the active site, even though they lack membrane regions. Yeast and human HMGR are divergent in their N-terminal regions, but are conserved in their active site. In contrast, human and bacterial HMGR differ in their active site architecture.
Pssm-ID: 153081 Cd Length: 403 Bit Score: 339.91 E-value: 3.08e-115
Hydroxymethylglutaryl-coenzyme A reductase; The HMG-CoA reductases catalyze the conversion of ...
11-344
1.09e-88
Hydroxymethylglutaryl-coenzyme A reductase; The HMG-CoA reductases catalyze the conversion of HMG-CoA to mevalonate, which is the rate-limiting step in the synthesis of isoprenoids like cholesterol. Probably because of the critical role of this enzyme in cholesterol homeostasis, mammalian HMG-CoA reductase is heavily regulated at the transcriptional, translational, and post-translational levels.
Pssm-ID: 459786 Cd Length: 368 Bit Score: 270.86 E-value: 1.09e-88
3-hydroxy-3-methylglutaryl Coenzyme A reductase, hydroxymethylglutaryl-CoA reductase (NADP); ...
11-349
2.99e-77
3-hydroxy-3-methylglutaryl Coenzyme A reductase, hydroxymethylglutaryl-CoA reductase (NADP); This model represents archaeal examples of the enzyme hydroxymethylglutaryl-CoA reductase (NADP) (EC 1.1.1.34) and the catalytic domain of eukaryotic examples, which also contain a hydrophobic N-terminal domain. This enzyme synthesizes mevalonate, a precursor of isopentenyl pyrophosphate (IPP), a building block for the synthesis of cholesterol, isoprenoids, and other molecules. A related hydroxymethylglutaryl-CoA reductase, typified by an example from Pseudomonas mevalonii, is NAD-dependent and catabolic. [Central intermediary metabolism, Other]
Pssm-ID: 129624 Cd Length: 402 Bit Score: 242.86 E-value: 2.99e-77
Hydroxymethylglutaryl-CoA reductase [Lipid transport and metabolism]; ...
12-290
2.21e-49
Hydroxymethylglutaryl-CoA reductase [Lipid transport and metabolism]; Hydroxymethylglutaryl-CoA reductase is part of the Pathway/BioSystem: Isoprenoid biosynthesis
Pssm-ID: 440869 Cd Length: 409 Bit Score: 170.32 E-value: 2.21e-49
Class I hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR); ...
11-344
3.08e-115
Class I hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR); Hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR), class I enzyme, homotetramer. Catalyzes the synthesis of coenzyme A and mevalonate in isoprenoid synthesis. In mammals this is the rate limiting committed step in cholesterol biosynthesis. Class I enzymes are found predominantly in eukaryotes and contain N-terminal membrane regions. With the exception of Archaeoglobus fulgidus, most archeae are assigned to class I, based on sequence similarity of the active site, even though they lack membrane regions. Yeast and human HMGR are divergent in their N-terminal regions, but are conserved in their active site. In contrast, human and bacterial HMGR differ in their active site architecture.
Pssm-ID: 153081 Cd Length: 403 Bit Score: 339.91 E-value: 3.08e-115
Hydroxymethylglutaryl-coenzyme A reductase; The HMG-CoA reductases catalyze the conversion of ...
11-344
1.09e-88
Hydroxymethylglutaryl-coenzyme A reductase; The HMG-CoA reductases catalyze the conversion of HMG-CoA to mevalonate, which is the rate-limiting step in the synthesis of isoprenoids like cholesterol. Probably because of the critical role of this enzyme in cholesterol homeostasis, mammalian HMG-CoA reductase is heavily regulated at the transcriptional, translational, and post-translational levels.
Pssm-ID: 459786 Cd Length: 368 Bit Score: 270.86 E-value: 1.09e-88
3-hydroxy-3-methylglutaryl Coenzyme A reductase, hydroxymethylglutaryl-CoA reductase (NADP); ...
11-349
2.99e-77
3-hydroxy-3-methylglutaryl Coenzyme A reductase, hydroxymethylglutaryl-CoA reductase (NADP); This model represents archaeal examples of the enzyme hydroxymethylglutaryl-CoA reductase (NADP) (EC 1.1.1.34) and the catalytic domain of eukaryotic examples, which also contain a hydrophobic N-terminal domain. This enzyme synthesizes mevalonate, a precursor of isopentenyl pyrophosphate (IPP), a building block for the synthesis of cholesterol, isoprenoids, and other molecules. A related hydroxymethylglutaryl-CoA reductase, typified by an example from Pseudomonas mevalonii, is NAD-dependent and catabolic. [Central intermediary metabolism, Other]
Pssm-ID: 129624 Cd Length: 402 Bit Score: 242.86 E-value: 2.99e-77
Hydroxymethylglutaryl-CoA reductase [Lipid transport and metabolism]; ...
12-290
2.21e-49
Hydroxymethylglutaryl-CoA reductase [Lipid transport and metabolism]; Hydroxymethylglutaryl-CoA reductase is part of the Pathway/BioSystem: Isoprenoid biosynthesis
Pssm-ID: 440869 Cd Length: 409 Bit Score: 170.32 E-value: 2.21e-49
Hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR); Hydroxymethylglutaryl-coenzyme A ...
11-333
2.18e-30
Hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR); Hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR) is a tightly regulated enzyme, which catalyzes the synthesis of coenzyme A and mevalonate in isoprenoid synthesis. In mammals, this is the rate limiting committed step in cholesterol biosynthesis. Bacteria, such as Pseudomonas mevalonii, which rely solely on mevalonate for their carbon source, catalyze the reverse reaction, using an NAD-dependent HMGR to deacetylate mevalonate into 3-hydroxy-3-methylglutaryl-CoA. There are two classes of HMGR: class I enzymes which are found predominantly in eukaryotes and contain N-terminal membrane regions and class II enzymes which are found primarily in prokaryotes and are soluble as they lack the membrane region. With the exception of Archaeoglobus fulgidus, most archeae are assigned to class I, based on sequence similarity of the active site, even though they lack membrane regions. Yeast and human HMGR are divergent in their N-terminal regions, but are conserved in their active site. In contrast, human and bacterial HMGR differ in their active site architecture. While the prokaryotic enzyme is a homodimer, the eukaryotic enzyme is a homotetramer.
Pssm-ID: 153080 Cd Length: 376 Bit Score: 118.93 E-value: 2.18e-30
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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of your query sequence and the protein sequences used to curate the domain model,
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Functional characterization of the conserved domain architecture found on the query.
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This image shows a graphical summary of conserved domains identified on the query sequence.
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if a domain or superfamily has been annotated with functional sites (conserved features),
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click on the bars or triangles to view your query sequence embedded in a multiple sequence alignment of the proteins used to develop the corresponding domain model.
The table lists conserved domains identified on the query sequence. Click on the plus sign (+) on the left to display full descriptions, alignments, and scores.
Click on the domain model's accession number to view the multiple sequence alignment of the proteins used to develop the corresponding domain model.
To view your query sequence embedded in that multiple sequence alignment, click on the colored bars in the Graphical Summary portion of the search results page,
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Concise Display shows only the best scoring domain model, in each hit category listed below except non-specific hits, for each region on the query sequence.
(labeled illustration) Standard Display shows only the best scoring domain model from each source, in each hit category listed below for each region on the query sequence.
(labeled illustration) Full Display shows all domain models, in each hit category below, that meet or exceed the RPS-BLAST threshold for statistical significance.
(labeled illustration) Four types of hits can be shown, as available,
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specific hits meet or exceed a domain-specific e-value threshold
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and represent a very high confidence that the query sequence belongs to the same protein family as the sequences use to create the domain model
non-specific hits
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the domain superfamily to which the specific and non-specific hits belong
multi-domain models that were computationally detected and are likely to contain multiple single domains
Retrieve proteins that contain one or more of the domains present in the query sequence, using the Conserved Domain Architecture Retrieval Tool
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