3-hydroxy-3-methylglutaryl-coenzyme A reductase is part of the first module of ergosterol biosynthesis pathway that includes the early steps of the pathway, conserved across all eukaryotes, and which results in the formation of mevalonate from acetyl-coenzyme A (acetyl-CoA)
Class I hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR); ...
465-871
0e+00
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: 713.56 E-value: 0e+00
Hydroxymethylglutaryl-coenzyme A reductase; The HMG-CoA reductases catalyze the conversion of ...
491-871
0e+00
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: 557.45 E-value: 0e+00
Hydroxymethylglutaryl-CoA reductase [Lipid transport and metabolism]; ...
527-867
6.01e-88
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: 285.88 E-value: 6.01e-88
Class I hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR); ...
465-871
0e+00
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: 713.56 E-value: 0e+00
Hydroxymethylglutaryl-coenzyme A reductase; The HMG-CoA reductases catalyze the conversion of ...
491-871
0e+00
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: 557.45 E-value: 0e+00
3-hydroxy-3-methylglutaryl Coenzyme A reductase, hydroxymethylglutaryl-CoA reductase (NADP); ...
462-871
9.03e-172
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: 503.64 E-value: 9.03e-172
Hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR); Hydroxymethylglutaryl-coenzyme A ...
479-871
1.22e-166
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: 489.50 E-value: 1.22e-166
Hydroxymethylglutaryl-CoA reductase [Lipid transport and metabolism]; ...
527-867
6.01e-88
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: 285.88 E-value: 6.01e-88
Class II hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR); ...
528-872
2.01e-19
Class II hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR); Hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase (HMGR), class II, prokaryotic enzyme is a homodimer. Class II enzymes are found primarily in prokaryotes and Archaeoglobus fulgidus and are soluble as they lack the membrane region. Enzymes catalyze the synthesis of coenzyme A and mevalonate in isoprenoid synthesis. 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. Human and bacterial HMGR differ in their active site architecture.
Pssm-ID: 153082 Cd Length: 417 Bit Score: 91.79 E-value: 2.01e-19
Sterol-sensing domain of SREBP cleavage-activation; Sterol regulatory element-binding proteins ...
88-233
1.32e-11
Sterol-sensing domain of SREBP cleavage-activation; Sterol regulatory element-binding proteins (SREBPs) are membrane-bound transcription factors that promote lipid synthesis in animal cells. They are embedded in the membranes of the endoplasmic reticulum (ER) in a helical hairpin orientation and are released from the ER by a two-step proteolytic process. Proteolysis begins when the SREBPs are cleaved at Site-1, which is located at a leucine residue in the middle of the hydrophobic loop in the lumen of the ER. Upon proteolytic processing SREBP can activate the expression of genes involved in cholesterol biosynthesis and uptake. SCAP stimulates cleavage of SREBPs via fusion of the their two C-termini. This domain is the transmembrane region that traverses the membrane eight times and is the sterol-sensing domain of the cleavage protein. WD40 domains are found towards the C-terminus.
Pssm-ID: 463544 [Multi-domain] Cd Length: 153 Bit Score: 63.37 E-value: 1.32e-11
Patched family; The transmembrane protein Patched is a receptor for the morphogene Sonic ...
62-251
4.28e-07
Patched family; The transmembrane protein Patched is a receptor for the morphogene Sonic Hedgehog. This protein associates with the smoothened protein to transduce hedgehog signals.
Pssm-ID: 308203 [Multi-domain] Cd Length: 793 Bit Score: 53.90 E-value: 4.28e-07
Niemann-Pick C type protein family; The model describes Niemann-Pick C type protein in ...
55-226
4.39e-05
Niemann-Pick C type protein family; The model describes Niemann-Pick C type protein in eukaryotes. The defective protein has been associated with Niemann-Pick disease which is described in humans as autosomal recessive lipidosis. It is characterized by the lysosomal accumulation of unestrified cholesterol. It is an integral membrane protein, which indicates that this protein is most likely involved in cholesterol transport or acts as some component of cholesterol homeostasis. [Transport and binding proteins, Other]
Pssm-ID: 273337 [Multi-domain] Cd Length: 1205 Bit Score: 47.60 E-value: 4.39e-05
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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