These proteins given per organism are involved in a DNA repair process;
double-strand break repair( GO:0006302 ):

Drosophila melanogaster( 2 entries )

BLM_DROME
MEI9_DROME

Homo sapiens( 5 entries )

FEN1_HUMAN
KIP1_HUMAN
KU86_HUMAN
POLS_HUMAN
TERA_HUMAN

Mus musculus( 1 entries )

Saccharomyces cerevisiae( 7 entries )

DPO4_YEAST
PSO2_YEAST
RAD5_YEAST
RFA1_YEAST
RFA2_YEAST
RFA3_YEAST
SMC1_YEAST

Schizosaccharomyces pombe( 7 entries )

CUT1_SCHPO
NSE1_SCHPO
NSE2_SCHPO
NSE4_SCHPO
SECU_SCHPO
SMC5_SCHPO
TAZ1_SCHPO