Cloned (Comment) | Organism |
---|---|
gene hss | Rhizobium tropici |
Protein Variants | Comment | Organism |
---|---|---|
additional information | construction of a mutant strain Rt hss::omega,Spr of Rhizobium tropici strain Rt CIAT899 impaired in the synthesis of homospermidine, neither homospermidine nor 4-aminobutilcadaverine are detected in the free-living mutant bacteria and in nodules of plants inoculated with the mutant strain | Rhizobium tropici |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | Rhizobium tropici | despite the synthesis of homospermidine, the enzyme also produces 4-aminobutilcadaverine | ? | - |
? | |
additional information | Rhizobium tropici Rt CIAT899 | despite the synthesis of homospermidine, the enzyme also produces 4-aminobutilcadaverine | ? | - |
? | |
putrescine | Rhizobium tropici | - |
sym-homospermidine + NH3 + H+ | - |
? | |
putrescine | Rhizobium tropici Rt CIAT899 | - |
sym-homospermidine + NH3 + H+ | - |
? | |
putrescine + spermidine | Rhizobium tropici | - |
sym-homospermidine + propane-1,3-diamine | - |
? | |
putrescine + spermidine | Rhizobium tropici Rt CIAT899 | - |
sym-homospermidine + propane-1,3-diamine | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Rhizobium tropici | A0A6P1C3Y7 | gene hss | - |
Rhizobium tropici Rt CIAT899 | A0A6P1C3Y7 | gene hss | - |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | despite the synthesis of homospermidine, the enzyme also produces 4-aminobutilcadaverine | Rhizobium tropici | ? | - |
? | |
additional information | despite the synthesis of homospermidine, the enzyme also produces 4-aminobutilcadaverine | Rhizobium tropici Rt CIAT899 | ? | - |
? | |
putrescine | - |
Rhizobium tropici | sym-homospermidine + NH3 + H+ | - |
? | |
putrescine | - |
Rhizobium tropici Rt CIAT899 | sym-homospermidine + NH3 + H+ | - |
? | |
putrescine + spermidine | - |
Rhizobium tropici | sym-homospermidine + propane-1,3-diamine | - |
? | |
putrescine + spermidine | - |
Rhizobium tropici Rt CIAT899 | sym-homospermidine + propane-1,3-diamine | - |
? |
Synonyms | Comment | Organism |
---|---|---|
HSS | - |
Rhizobium tropici |
General Information | Comment | Organism |
---|---|---|
malfunction | ann enzyme knockout mutant does not contain neither homospermidine nor 4-aminobutilcadaverine and is more sensitive to salinity than the wild-type, and plants inoculated with the mutant bacteria have lower nodule fresh weight than with the wild-type | Rhizobium tropici |
physiological function | homospermidine synthase contributes to salt tolerance in free-living Rhizobium tropici and in symbiosis with Phaseolus vulgaris. Homospermidine is involved in the stress tolerance of fast-growing rhizobia and in the bacteroid protection from environmental changes. The enzyme seems to be involved in nodule organogenesis, the enzyme HSS is not required for normal growth of Rhizobium tropici but provides tolerance to salt stress, growth kinetics in wild-type and mutant strains, overview | Rhizobium tropici |