Cloned (Comment) | Organism |
---|---|
gene SQD1, relative enzyme expression analysis | Solanum lycopersicum |
Localization | Comment | Organism | GeneOntology No. | Textmining |
---|---|---|---|---|
chloroplast | - |
Solanum lycopersicum | 9507 | - |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
UDP-alpha-D-sulfoquinovopyranose + H2O | Solanum lycopersicum | the enzyme catalyzes the reverse reaction | UDP-alpha-D-glucose + sulfite | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Solanum lycopersicum | C0LIR3 | gene SQD1 | - |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
leaf | - |
Solanum lycopersicum | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
UDP-alpha-D-sulfoquinovopyranose + H2O | the enzyme catalyzes the reverse reaction | Solanum lycopersicum | UDP-alpha-D-glucose + sulfite | - |
? |
Synonyms | Comment | Organism |
---|---|---|
SQD1 | - |
Solanum lycopersicum |
Organism | Comment | Expression |
---|---|---|
Solanum lycopersicum | the UDP-sulfoquinovose synthase in Solanum lycopersicum wild-type leaves is are downregulated during extended darkness, the expression of chloroplast-localized SQD1 transcript decreases during dark stress and recovers upon return to light in both wild-type and SO Ri plant. SQD1 transcript and protein levels are significantly up-regulated in response to sulfite injection into leaves of dark-stressed wild-type plants or into wild-type and SO Ri mutant leaves grown under a natural light regimes | down |
Solanum lycopersicum | SQD1 transcript and protein levels are significantly up-regulated in response to sulfite injection into leaves of dark-stressed wild-type plants or into wild-type and SO Ri mutant leaves grown under a natural light regimes | up |
General Information | Comment | Organism |
---|---|---|
metabolism | key elements of the sulfite network enzymes that include adenosine-5'-phosphosulfate reductase and the sulfite scavengers sulfite oxidase (SO), sulfite reductase, UDP-sulfoquinovose synthase, and beta-mercaptopyruvate sulfurtransferases. During extended dark, sulfite oxidase is enhanced in Solanum lycopersicum wild-type leaves, while the other sulfite network components are downregulated. One pathway for sulfite utilization is its incorporation into sulfolipids, catalyzed by the chloroplast-localized UDP-sulfoquinovose synthase. In the first step, UDP-sulfoquinovase is catalyzed by SQD1, employing sulfite and UDP-Glc as substrates, while in the second step, sulfoquinovosyldiacylglycerol (SQDG) is catalyzed by SQDG synthase, employing UDP-sulfoquinovose and diacylglycerols as substrates | Solanum lycopersicum |
physiological function | the enzyme is a member of the sulfite network, one pathway for sulfite utilization is its incorporation into sulfolipids, catalyzed by the chloroplast-localized UDP-sulfoquinovose synthase. The degradation of sulfolipids is an essential step in chloroplast degradation | Solanum lycopersicum |