>cd00141 NT_POLXc Nucleotidyltransferase (NT) domain of family X DNA Polymerases. X family polymerases fill in short gaps during DNA repair. They are relatively inaccurate enzymes and play roles in base excision repair, in non-homologous end joining (NHEJ) which acts mainly to repair damage due to ionizing radiation, and in V(D)J recombination. This family includes eukaryotic Pol beta, Pol lambda, Pol mu, and terminal deoxyribonucleotidyl transferase (TdT). Pol beta and Pol lambda are primarily DNA template-dependent polymerases. TdT is a DNA template-independent polymerase. Pol mu has both template dependent and template independent activities. This subgroup belongs to the Pol beta-like NT superfamily. In the majority of enzymes in this superfamily, two carboxylates, Dx[D/E], together with a third more distal carboxylate, coordinate two divalent metal cations involved in a two-metal ion mechanism of nucleotide addition. These three carboxylate residues are fairly well conserved in this

Probab=90.15  E-value=0.51  Score=26.86  Aligned_cols=13  Identities=15%  Similarity=0.263  Sum_probs=6.4

Q ss_pred             HCCHHHHHHCCCC
Q ss_conf             3898888627899
Q gi|255764496|r  583 RSSPETLASIEGI  595 (616)
Q Consensus       583 ~As~eeL~~v~gi  595 (616)
T Consensus       287 ~~sE~~If~~Lgl  299 (307)
T cd00141         287 GETEEEIFEALGL  299 (307)
T ss_pred             CCCHHHHHHHCCC
T ss_conf             9999999998599