9-1-1	Rad 9–Hus 1–Rad 1 complex (fission yeast and human) equivalent to the
complex	Rad 17–Mec3–Ddc1 complex in budding yeast
aa	amino acid
AND-1/CTF4/	acidic and nucleoplasmic DNA-binding protein/chromosome-
WDHD1	Transmission Fidelity 4/WD repeat and HMG-box DNA-binding protein 1
A-T	Ataxia telangiectasia
ATM	Ataxia telangiectasia-mutated
ATR	ATM-Rad 3-related protein kinase
ATRIP	ATR interacting protein
ba	bases
BLM	Bloom’s helicase
CDC	cell division cycle
CDK	cyclin-dependent kinase
CDT1	chromatin licensing and DNA replication factor 1 (also known as CDC10-dependent transcript 1 in S. pombe)
CMG	CDC45–MCM2-7–GINS
CST	CTC1–STN1–TEN1
DBD	DNA-binding domain
DDR	DNA damage response
DH	double hexamer
DSB	double-strand break
dsDNA	double-stranded DNA
ETAA1	Ewing’s Tumour-Associated Antigen 1
G4	G-quadruplexes
IC	initiation complex
hPolprim1	human primase-polymerase 1
MCM	minichromosome maintenance
MTBP	Mouse double minute 2-binding protein
nt	nucleotide
PCNA	proliferating cell nuclear antigen
PIKK	phosphotnositol-3 kinase-like protein kinase
Pol α	DNA polymerase α–primase
Pol δ	DNA polymerase δ
Pol ε	DNA polymerase ε
POT1	protector of telomeres 1
Pre-RC	pre-replicative complex
Pre-IC	pre-initiation complex
RAD	radiation-induced mutation
RFC	replication factor C
RPA	replication protein A
SSB	single-stranded DNA-binding protein
ssDNA	single-stranded DNA
S. cerevisiae	Saccharomyces cerevisiae
S. pombe	Schizosaccharomyces pombe
SV40	simian virus 40
Tp53	tumour suppressor protein p53
TOPBP1	topoisomerase II-binding protein 1