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5.4.3.3: lysine 5,6-aminomutase

This is an abbreviated version!
For detailed information about lysine 5,6-aminomutase, go to the full flat file.

Word Map on EC 5.4.3.3

Reaction

(3S)-3,6-diaminohexanoate
=
(3S,5S)-3,5-diaminohexanoate

Synonyms

(R)-lysine mutase, 5,6-LAM, beta-Lysine mutase, EC 5.4.3.4, KamDE, LAM, lysine 5,6-aminomutase

ECTree

     5 Isomerases
         5.4 Intramolecular transferases
             5.4.3 Transferring amino groups
                5.4.3.3 lysine 5,6-aminomutase

Engineering

Engineering on EC 5.4.3.3 - lysine 5,6-aminomutase

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PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
D298A
site-directed mutagenesis, the mutation of the alpha-subunit
D298N
site-directed mutagenesis, the mutation of the alpha-subunit reduces the enzymatic activity in converting D-lysine into D-2,5-diaminohexanoic acid
K370A
site-directed mutagenesis, the mutation of the alpha-subunit reduces the enzymatic activity in converting D-lysine into D-2,5-diaminohexanoic acid
K370Q
site-directed mutagenesis, the mutation of the alpha-subunit reduces the enzymatic activity in converting D-lysine into D-2,5-diaminohexanoic acid
Y263F
-
the mutation abolishes the enzymatic activity
C235S
-
9% of wild-type activity
K144Q
-
no activity
K23Q
-
75% of wild-type activity
K377Q
-
0.6% of wild-type activity
K446Q
-
25% of wild-type activity
K58Q
-
33% of wild-type activity
K90Q
-
72% of wild-type activity
additional information
-
protein KamDE comprised of the 30000 and 51000 kDa subunits of the E1 component of D-alpha-lysine aminomutase is catalytically active in absence of the third 12800 kDa subunit, but ATP no longer has a regulatory effect on it. The S subunit of D-ornithine aminomutase, OraS, is capable of forming a complex with KamDE and restores the enzyme’s ATP-dependent allosteric regulation. OraS protein alone lowers the Km of KamDE for adenosylcobalamin and pyridoxal phosphate