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2.7.7.31: DNA nucleotidylexotransferase

This is an abbreviated version!
For detailed information about DNA nucleotidylexotransferase, go to the full flat file.

Word Map on EC 2.7.7.31

Reaction

a 2'-deoxyribonucleoside 5'-triphosphate
+
DNAn
=
diphosphate
+
DNAn+1

Synonyms

addase, bTdT, deoxynucleotidyl terminal transferase, deoxynucleotidyl transferase, deoxyribonucleic acid nucleotidyltransferase, deoxyribonucleic nucleotidyltransferase, DNA-polymerizing enzyme, DNTT, hTdT, hTdTL1, hTdTL2, hTdTS, mTdT, nucleotidyltransferase, terminal deoxyribo-, Rep75, TdT, terminal addition enzyme, terminal deoxynucleotide transferase, terminal deoxynucleotidyl transferase, terminal deoxynucleotidyl transferase (TDT), terminal deoxynucleotidyltransferase, terminal deoxynucleotiyl transferase, terminal deoxyribonucleotidyl transferase, terminal deoxyribonucleotidyltransferase

ECTree

     2 Transferases
         2.7 Transferring phosphorus-containing groups
             2.7.7 Nucleotidyltransferases
                2.7.7.31 DNA nucleotidylexotransferase

Engineering

Engineering on EC 2.7.7.31 - DNA nucleotidylexotransferase

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PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
K177N/E178G/K271E/F280L/M283K/H405P
the thermostable mutant TdT3-2 shows a 10 C increased melting temperature as compared to the wild type enzyme. The mutant is capable of incorporating higher amount of ddCTP onto double stranded blunt end DNA
A445T
natural variant of TdT, decrease in polymerase ability
D280H
natural variant of TdT
L397S
natural variant of TdT, impaired polymerase activity in vitro and impaired N-additions in an in vivo V(D)J assay
R431C
natural variant of TdT, loss of polymerase activity
R460Q
natural variant of TdT
T450S
natural variant of TdT. Mutation leads to a decrease in the amount of product
D179A
mutation improves templated-polymerase activity
del1-232
-
mutant shows no appreciable activity
del1-280
-
mutant shows no appreciable activity
del421-501
-
mutant shows no appreciable activity
del453-501
-
mutant shows no appreciable activity
G257A/V258A/G259A
-
mutant shows no appreciable activity
S187R
mutation improves templated-polymerase activity
S187R/D179A
mutation improves templated-polymerase activity
additional information