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

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)

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Results	in table
49	AA Sequence
2	CAS Registry Number
18	Cloned(Commentary)
9	Cofactor
5	Expression
23	General Information
1	General Stability
5	Inhibitors
5	Ki Value [mM]
5	KM Value [mM]
3	Localization
11	Molecular Weight [Da]
21	Natural Substrates/ Products (Substrates)
35	Organism
1	Pathway
1	pH Optimum
1	pH Range
7	Protein Variants
9	Purification (Commentary)
1	Reaction
1	Reaction Type
35	Reference
67	Source Tissue
7	Specific Activity [micromol/min/mg]
1	Storage Stability
36	Substrates and Products (Substrate)
10	Subunits
22	Synonyms
1	Systematic Name
1	Turnover Number [1/s]

Natural Substrates Products

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Natural Substrates Products on EC 2.5.1.45 - homospermidine synthase (spermidine-specific)

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NATURAL SUBSTRATE

NATURAL PRODUCT

REACTION DIAGRAM

ORGANISM

UNIPROT

COMMENTARY
(Substrate)

LITERATURE
(Substrate)

COMMENTARY
(Product)

LITERATURE
(Product)

REVERSIBILITY
r=reversible
ir=irreversible
?=not specified

putrescine + spermidine

sym-homospermidine + propane-1,3-diamine

5 entries

putrescine + spermine

sym-homospermine + propane-1,3-diamine

7 entries

spermidine + putrescine

sym-homospermidine + propane-1,3-diamine

6 entries

putrescine + spermidine

sym-homospermidine + propane-1,3-diamine

Distimake quinquefolius

-

-

739292

-

-

?

putrescine + spermidine

sym-homospermidine + propane-1,3-diamine

Ipomoea alba

-

-

739292

-

-

?

putrescine + spermidine

sym-homospermidine + propane-1,3-diamine

Ipomoea hederifolia

-

-

739292

-

-

?

putrescine + spermidine

sym-homospermidine + propane-1,3-diamine

Ipomoea meyeri

-

-

739292

-

-

?

putrescine + spermidine

sym-homospermidine + propane-1,3-diamine

Ipomoea neei

-

-

739292

-

-

?

putrescine + spermine

sym-homospermine + propane-1,3-diamine

Eupatorium cannabinum

-

-

288699, 638089

-

-

?

putrescine + spermine

sym-homospermine + propane-1,3-diamine

Eupatorium pauciflorum

-

-

638089

-

-

?

putrescine + spermine

sym-homospermine + propane-1,3-diamine

Jacobaea vulgaris

-

-

638089

-

-

?

putrescine + spermine

sym-homospermine + propane-1,3-diamine

Senecio vernalis

-

-

638080, 638084

-

-

?

putrescine + spermine

sym-homospermine + propane-1,3-diamine

Senecio vernalis

Q9SC13

-

638062

-

-

?

putrescine + spermine

sym-homospermine + propane-1,3-diamine

Senecio vulgaris

-

-

638090, 638091

-

-

?

putrescine + spermine

sym-homospermine + propane-1,3-diamine

Senecio vulgaris

Q9M4B0

the plant homospermidine synthase is essentially dependent on spermidine as aminobutyl donor and is unable to synthesize homospermidine from two molecules of putrescine

638088

-

-

?

spermidine + putrescine

sym-homospermidine + propane-1,3-diamine

Crotalaria spectabilis

A0A0E4G3W1

-

739550

-

-

?

spermidine + putrescine

sym-homospermidine + propane-1,3-diamine

Cynoglossum officinale

Q5ZN66

-

739261

-

-

?

spermidine + putrescine

sym-homospermidine + propane-1,3-diamine

Eupatorium cannabinum

-

first specific enzyme in the biosynthesis of the necine base moiety of pyrrolizidine alkaloids

660250

-

-

?

spermidine + putrescine

sym-homospermidine + propane-1,3-diamine

Heliotropium indicum

Q5ZN63

-

739261

-

-

?

spermidine + putrescine

sym-homospermidine + propane-1,3-diamine

Jacobaea vulgaris

-

first specific enzyme in the biosynthesis of the necine base moiety of pyrrolizidine alkaloids

660250

-

-

?

spermidine + putrescine

sym-homospermidine + propane-1,3-diamine

Symphytum officinale

Q5ZN55

-

739261

-

-

?