Enzymes
| UniProtKB help_outline | 3 proteins |
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Name help_outline
N-acetyl-α-D-glucosaminyldiphosphodolichol
Identifier
CHEBI:58427
Charge
-2
Formula
(C5H8)n.C28H49NO12P2
Search links
Involved in 2 reaction(s)
Find proteins in UniProtKB for this molecule
Form(s) in this reaction:
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Identifier: RHEA-COMP:19507Polymer name: an N-acetyl-α-D-glucosaminyl-diphospho-di-trans,poly-cis-dolicholPolymerization index help_outline n-1Formula C28H49NO12P2(C5H8)n-1Charge (-2)(0)n-1Mol File for the polymer
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- Name help_outline UDP-N-acetyl-α-D-glucosamine Identifier CHEBI:57705 (Beilstein: 4286654) help_outline Charge -2 Formula C17H25N3O17P2 InChIKeyhelp_outline LFTYTUAZOPRMMI-CFRASDGPSA-L SMILEShelp_outline CC(=O)N[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1OP([O-])(=O)OP([O-])(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1O)n1ccc(=O)[nH]c1=O 2D coordinates Mol file for the small molecule Search links Involved in 88 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Name help_outline
N,N'-diacetylchitobiosyldiphosphodolichol
Identifier
CHEBI:57269
Charge
-2
Formula
C36H62N2O17P2(C5H8)n
Search links
Involved in 2 reaction(s)
Find proteins in UniProtKB for this molecule
Form(s) in this reaction:
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Identifier: RHEA-COMP:19510Polymer name: an N,N'-diacetylchitobiosyl-diphospho-di-trans,poly-cis-dolicholPolymerization index help_outline n-1Formula C36H62N2O17P2(C5H8)n-1Charge (-2)(0)n-1Mol File for the polymer
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- Name help_outline UDP Identifier CHEBI:58223 Charge -3 Formula C9H11N2O12P2 InChIKeyhelp_outline XCCTYIAWTASOJW-XVFCMESISA-K SMILEShelp_outline O[C@@H]1[C@@H](COP([O-])(=O)OP([O-])([O-])=O)O[C@H]([C@@H]1O)n1ccc(=O)[nH]c1=O 2D coordinates Mol file for the small molecule Search links Involved in 611 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,717 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:23380 | RHEA:23381 | RHEA:23382 | RHEA:23383 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Glucuronosyl-N-acetylglucosaminyl pyrophosphoryldolichol. Formation in SV40-transformed human lung fibroblasts and biosynthesis in rat lung microsomal preparations.
Turco S.J., Heath E.C.
Incubation of SV40-transformed human lung fibroblasts with [3H]glucosamine for 1 h. followed by chloroform:methanol extraction and thin layer chromatographic analysis, revealed the presence of a major radioactive lipid that was isolated and characterized as GIcUA-(1 leads to 4)-GlcNAc-P-P-dolichol ... >> More
Incubation of SV40-transformed human lung fibroblasts with [3H]glucosamine for 1 h. followed by chloroform:methanol extraction and thin layer chromatographic analysis, revealed the presence of a major radioactive lipid that was isolated and characterized as GIcUA-(1 leads to 4)-GlcNAc-P-P-dolichol. An identical lipid was formed in smaller quantities under similar incubation conditions in several fibroblastic lines, HeLa cells, and in mouse L cells. Rat lung microsomal preparations catalyze the synthesis of the disaccharide lipid in the following sequence of reactions: UDP-[3H]GlcNAc + dolichol-P leads to [3H]GlcNAc-P-P-dolichol (1) [3H]GlcNAc-P-P-dolichol + UDP-[14C]GlcUA leads to [14C]GlcUA-[3H]GlcNAc-P-P-dolichol (2) The double-labeled lipid was identical to the lipid isolated from SV40-transformed fibroblasts with regard to its behavior on thin layer and silicic acid chromatography. Further, the double-labeled disaccharide released from the lipid by mild acid hydrolysis was identical to GlcUA-(1 leads to 4)-GlcNAc in its chromatographic and electrophoretic behavior and in its composition. The occurrence of a polyprenol derivative of GlcUA-(1 leads to 4)-GlcNAc suggests a possible role for this lipid in the biosynthesis of the repeating disaccharide units of proteoglycans, such as heparin. << Less
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Solubilization and characterization of the initial enzymes of the dolichol pathway from yeast.
Sharma C.B., Lehle L., Tanner W.
Preparation and purification of substrate amounts of radioactive as well as non-radioactive dolichyl diphosphate N-acetylglucosamine and dolichyl diphosphate chitobiose made it possible to test and characterize tentatively the first three reactions of the dolichol pathway (enzyme I-III). The test ... >> More
Preparation and purification of substrate amounts of radioactive as well as non-radioactive dolichyl diphosphate N-acetylglucosamine and dolichyl diphosphate chitobiose made it possible to test and characterize tentatively the first three reactions of the dolichol pathway (enzyme I-III). The test conditions are described in detail. All three enzymes were solubilized from yeast membranes with detergents. Enzyme II and III were purified to give a purification factor of 35-fold and 70-fold, respectively. The reactions required divalent metal ions with an optimum concentration of 10 mM Mg2+. Enzyme II was stimulated almost to the same extent also by Ca2+. The Km values for UDP-N-acetylglucosamine for enzyme I and II were 15 and 10 muM, respectively, and for GDP-mannose (enzyme III) 7 muM. The apparent Km values for the lipophilic acceptor was 180 muM for enzyme I (dolichyl phosphate), 40 muM for enzyme II (dolichyl diphosphate N-acetylglucosamine) and 17 muM for enzyme III (dolichyl diphosphate chitobiose). The corresponding V values were approximately 1, 10, and 50 nmol X h-1 X mg protein-1. All reactions were inhibited by nucleoside diphosphates. << Less
Eur J Biochem 126:319-325(1982) [PubMed] [EuropePMC]
This publication is cited by 2 other entries.