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2.5.1.45: homospermidine synthase (spermidine-specific)

This is an abbreviated version!
For detailed information about homospermidine synthase (spermidine-specific), go to the full flat file.

Reaction

spermidine
+
putrescine
=
sym-homospermidine
+
propane-1,3-diamine

Synonyms

homospermidine synthase, HSS, HSS1, synthase, homospermidine, synthase, homospermidine (Senecio vernalis root gene HSS1)

ECTree

     2 Transferases
         2.5 Transferring alkyl or aryl groups, other than methyl groups
             2.5.1 Transferring alkyl or aryl groups, other than methyl groups (only sub-subclass identified to date)
                2.5.1.45 homospermidine synthase (spermidine-specific)

Engineering

Engineering on EC 2.5.1.45 - homospermidine synthase (spermidine-specific)

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PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
I277D
-
site-directed mutagenesis, the mutant shows increased HSS activity with putrescine and slightly reduced deoxyhypusine synthase activity compared to the wild-type
I277D/N281D
-
site-directed mutagenesis, the mutant shows increased HSS activity with putrescine and reduced deoxyhypusine synthase activity compared to the wild-type
N266H
-
site-directed mutagenesis, the mutant shows increased HSS activity with putrescine and reduced deoxyhypusine synthase activity compared to the wild-type
N266H/I277D
-
site-directed mutagenesis, the mutant shows increased HSS activity with putrescine, but unaltered deoxyhypusine synthase activity compared to the wild-type
N266H/I277D/N281D
-
site-directed mutagenesis, the mutant shows increased HSS activity with putrescine and reduced deoxyhypusine synthase activity compared to the wild-type
N266H/N281D
-
site-directed mutagenesis, the mutant shows increased HSS activity with putrescine and reduced deoxyhypusine synthase activity compared to the wild-type
N281D
-
site-directed mutagenesis, the mutant shows slightly reduced HSS activity with putrescine and reduced deoxyhypusine synthase activity compared to the wild-type