Phosphomannose isomerase in bacteria and archaea, N-terminal cupin domain; This subfamily ...
10-223
2.51e-78
Phosphomannose isomerase in bacteria and archaea, N-terminal cupin domain; This subfamily contains type I phosphomannose isomerase (PMI; E.C. 5.3.1.8; also known as mannose-6-phosphate isomerase) found in many bacteria (e.g. Bacillus subtilis) and archaea. PMI catalyzes the reversible isomerization of fructose-6-phosphate (F6P) and mannose-6-phosphate (M6P), the first committed step in the synthesis of mannosylated glycoproteins. The active site, located within the N-terminal jelly roll-like beta-barrel cupin fold, contains a single essential zinc atom and forms a deep, open cavity large enough to contain M6P or F6P. PMI type I also has a C-terminal beta-barrel fold which has diverged considerably from the N-terminal domain and is not included here. This subfamily does not contain an alpha helical domain that exists in eukaryotic and some prokaryotic PMIs. F6P is a substrate for glycolysis and gluconeogenesis, while M6P is a substrate for production of activated mannose donor guanosine 5'-diphosphate D-mannose, an important precursor of mannosylated biomolecules such as glycoproteins, bacterial exopolysaccharides and fungal cell wall components. PMI is also essential for survival, virulence and possibly pathogenicity of some bacteria and protozoan parasites, as well as for cell wall integrity of certain yeasts. Thus, PMI is a potential target against fungal infections causing serious illness or death.
Pssm-ID: 380413 Cd Length: 173 Bit Score: 236.27 E-value: 2.51e-78
mannose-6-phosphate isomerase, class I; The names phosphomannose isomerase and ...
3-321
3.55e-68
mannose-6-phosphate isomerase, class I; The names phosphomannose isomerase and mannose-6-phosphate isomerase are synonomous. This family contains two rather deeply branched groups. One group contains an experimentally determined phosphomannose isomerase of Streptococcus mutans as well as three uncharacterized paralogous proteins of Bacillus subtilis, all at more than 50 % identity to each other, plus a more distant homolog from Archaeoglobus fulgidus. The other group contains members from E. coli, budding yeast, Borrelia burgdorferi, etc. [Energy metabolism, Sugars]
Pssm-ID: 272966 [Multi-domain] Cd Length: 302 Bit Score: 214.99 E-value: 3.55e-68
Phosphomannose isomerase type I, catalytic domain; This entry represents the catalytic domain ...
4-122
1.40e-15
Phosphomannose isomerase type I, catalytic domain; This entry represents the catalytic domain of Phosphomannose isomerase type I enzymes (EC 5.3.1.8) which contains a zinc-binding site. It is composed of beta-strands connected by long loops in a jelly roll conformation.
Pssm-ID: 466660 [Multi-domain] Cd Length: 143 Bit Score: 72.60 E-value: 1.40e-15
Phosphomannose isomerase in bacteria and archaea, N-terminal cupin domain; This subfamily ...
10-223
2.51e-78
Phosphomannose isomerase in bacteria and archaea, N-terminal cupin domain; This subfamily contains type I phosphomannose isomerase (PMI; E.C. 5.3.1.8; also known as mannose-6-phosphate isomerase) found in many bacteria (e.g. Bacillus subtilis) and archaea. PMI catalyzes the reversible isomerization of fructose-6-phosphate (F6P) and mannose-6-phosphate (M6P), the first committed step in the synthesis of mannosylated glycoproteins. The active site, located within the N-terminal jelly roll-like beta-barrel cupin fold, contains a single essential zinc atom and forms a deep, open cavity large enough to contain M6P or F6P. PMI type I also has a C-terminal beta-barrel fold which has diverged considerably from the N-terminal domain and is not included here. This subfamily does not contain an alpha helical domain that exists in eukaryotic and some prokaryotic PMIs. F6P is a substrate for glycolysis and gluconeogenesis, while M6P is a substrate for production of activated mannose donor guanosine 5'-diphosphate D-mannose, an important precursor of mannosylated biomolecules such as glycoproteins, bacterial exopolysaccharides and fungal cell wall components. PMI is also essential for survival, virulence and possibly pathogenicity of some bacteria and protozoan parasites, as well as for cell wall integrity of certain yeasts. Thus, PMI is a potential target against fungal infections causing serious illness or death.
Pssm-ID: 380413 Cd Length: 173 Bit Score: 236.27 E-value: 2.51e-78
mannose-6-phosphate isomerase, class I; The names phosphomannose isomerase and ...
3-321
3.55e-68
mannose-6-phosphate isomerase, class I; The names phosphomannose isomerase and mannose-6-phosphate isomerase are synonomous. This family contains two rather deeply branched groups. One group contains an experimentally determined phosphomannose isomerase of Streptococcus mutans as well as three uncharacterized paralogous proteins of Bacillus subtilis, all at more than 50 % identity to each other, plus a more distant homolog from Archaeoglobus fulgidus. The other group contains members from E. coli, budding yeast, Borrelia burgdorferi, etc. [Energy metabolism, Sugars]
Pssm-ID: 272966 [Multi-domain] Cd Length: 302 Bit Score: 214.99 E-value: 3.55e-68
Phosphomannose isomerase type I, catalytic domain; This entry represents the catalytic domain ...
4-122
1.40e-15
Phosphomannose isomerase type I, catalytic domain; This entry represents the catalytic domain of Phosphomannose isomerase type I enzymes (EC 5.3.1.8) which contains a zinc-binding site. It is composed of beta-strands connected by long loops in a jelly roll conformation.
Pssm-ID: 466660 [Multi-domain] Cd Length: 143 Bit Score: 72.60 E-value: 1.40e-15
Oxalate decarboxylase (OxDC)-like cupin domain; This subfamily contains bacterial and ...
260-306
6.34e-03
Oxalate decarboxylase (OxDC)-like cupin domain; This subfamily contains bacterial and eukaryotic cupin domains of proteins homologous to oxalate decarboxylase (OxDC; EC 4.1.1.2) such as MSMEG_2254, a putative OxDC from Mycobacterium smegmatis. OxDC is a manganese-dependent bicupin that catalyzes the conversion of oxalate to formate and carbon dioxide, utilizing dioxygen as a cofactor. It is evolutionarily related to oxalate oxidase (OxOx or germin; EC 1.2.3.4) which, in contrast, converts oxalate and dioxygen to carbon dioxide and hydrogen peroxide. OxDC is classified as a bicupin because it contains two cupin folds with each domain containing one manganese binding site, with four manganese binding residues (three histidines and one glutamate) conserved as well as a number of hydrophobic residues.
Pssm-ID: 380440 [Multi-domain] Cd Length: 151 Bit Score: 36.80 E-value: 6.34e-03
Phosphomannose isomerase type II, C-terminal cupin domain; This family includes the C-terminal ...
279-308
9.99e-03
Phosphomannose isomerase type II, C-terminal cupin domain; This family includes the C-terminal cupin domain of mannose-6-phosphate isomerases (MPIs) which have been classified broadly into two groups, type I and type II, based on domain organization. This family contains type II phosphomannose isomerase (also known as PMI-GDP, phosphomannose isomerase/GDP-D-mannose pyrophosphorylase), a bifunctional enzyme with two domains that catalyze the first and third steps in the GDP-mannose pathway in which fructose 6-phosphate is converted to GDP-D-mannose. The N-terminal domain catalyzes the first and rate-limiting step, the isomerization from D-fructose-6-phosphate to D-mannose-6-phosphate, while the C-terminal cupin domain (represented in this alignment model) converts mannose 1-phosphate to GDP-D-mannose in the final step of the reaction. Although these two domains occur together in one protein in most organisms, they occur as separate proteins in certain cyanobacterial organisms. Also, although type I and type II MPIs have no overall sequence similarity, they share a conserved catalytic motif.
Pssm-ID: 380343 [Multi-domain] Cd Length: 126 Bit Score: 35.61 E-value: 9.99e-03
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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