Description

IPR023400 is a DNA recombination and repair protein RecA, C-terminal, superfamily.

<p>The recA gene product is a multifunctional enzyme that plays a role in homologous recombination, DNA repair and induction of the SOS response [[cite:PUB00003747]]. In homologous recombination, the protein functions as a DNA-dependent ATPase, promoting synapsis, heteroduplex formation and strand exchange between homologous DNAs [[cite:PUB00003747]]. RecA also acts as a protease cofactor that promotes autodigestion of the lexA product and phage repressors. The proteolytic inactivation of the lexA repressor by an activated form of recA may cause a derepression of the 20 or so genes involved in the SOS response, which regulates DNA repair, induced mutagenesis, delayed cell division and prophage induction in response to DNA damage [[cite:PUB00003747]].</p> <p>RecA is a protein of about 350 amino-acid residues. Its sequence is very well conserved [[cite:PUB00004946], [cite:PUB00002285], [cite:PUB00003439]] among eubacterial species. It is also found in the chloroplast of plants [[cite:PUB00004797]]. RecA-like proteins are found in archaea and diverse eukaryotic organisms, like fission yeast, mouse or human. In the filament visualised by X-ray crystallography, β-strand 3, the loop C-terminal to β-strand 2, and α-helix D of the core domain form one surface that packs against α-helix A and β-strand 0 (the N-terminal domain) of an adjacent monomer during polymerisation [[cite:PUB00043276]]. The core ATP-binding site domain is well conserved, with 14 invariant residues. It contains the nucleotide binding loop between β-strand 1 and α-helix C. The Escherichia coli sequence GPESSGKT matches the consensus sequence of amino acids (G/A)XXXXGK(T/S) for the Walker A box (also referred to as the P-loop) found in a number of nucleoside triphosphate (NTP)-binding proteins. Another nucleotide binding motif, the Walker B box is found at β-strand 4 in the RecA structure. The Walker B box is characterised by four hydrophobic amino acids followed by an acidic residue (usually aspartate). Nucleotide specificity and additional ATP binding interactions are contributed by the amino acid residues at β-strand 2 and the loop C-terminal to that strand, all of which are greater than 90% conserved among bacterial RecA proteins.</p> <p>This superfamily represents the C-terminal domain, which forms an α/β two layer sandwich [[cite:PUB00037852]].</p>

This description is obtained from EB-eye REST.

Associated GO terms

Unable to find any GO terms for the transcript with the identifier.

Associated Lotus transcripts 13

Co-occuring domains 1

A list of co-occurring predicted domains within the L. japonicus gene space: