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Literature summary for 2.5.1.44 extracted from

  • Lopez-Gomez, M.; Cobos-Porras, L.; Prell, J.; Lluch, C.
    Homospermidine synthase contributes to salt tolerance in free-living Rhizobium tropici and in symbiosis with Phaseolus vulgaris (2016), Plant Soil, 404, 413-425.
No PubMed abstract available
Search for more literature for 2.5.1.44

Cloned(Commentary)

Cloned (Comment) Organism
gene hss Rhizobium tropici

Protein Variants

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/ Products (Substrates)

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

Organism UniProt Comment Textmining
Rhizobium tropici A0A6P1C3Y7 gene hss
-
Rhizobium tropici Rt CIAT899 A0A6P1C3Y7 gene hss
-

Substrates and Products (Substrate)

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

Synonyms Comment Organism
HSS
-
 Rhizobium tropici

General Information

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