DNA recognition properties of the N-terminal DNA binding domain within the large subunit of replication factor C.
Replication Factor C (RFC) is a five-subunit protein complex required for eukaryotic DNA replication and repair. The large subunit within this complex contains a C-terminal DNA binding domain which provides specificity for PCNA loading at a primer-template and a second, N-terminal DNA binding domain of unknown function. We isolated the N-terminal DNA binding domain from Drosophila melanogaster and defined the region within this polypeptide required for DNA binding. The DNA determinants most efficiently recognized by both the Drosophila minimal DNA binding domain and the N-terminal half of the human large subunit consist of a double-stranded DNA containing a recessed 5' phosphate. DNA containing a recessed 5' phosphate was preferred 5-fold over hairpined DNA containing a recessed 3' hydroxyl. Combined with existing data, these DNA binding properties suggest a role for the N-terminal DNA binding domain in the recognition of phosphorylated DNA ends.
Department of Biology, Texas A&M University, College Station, TX 77843, USA.
B L
BL
Allen
F
F
Uhlmann
L K
LK
Gaur
B A
BA
Mulder
K L
KL
Posey
L B
LB
Jones
S H
SH
Hardin
D000595:Amino Acid Sequence; D000818:Animals; D001665:Binding Sites; D003001:Cloning, Molecular; D017124:Conserved Sequence; D004247:DNA / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000235:genetics / Q000378:metabolism*; D004331:Drosophila melanogaster; D018398:Homeodomain Proteins; D006801:Humans; D015778:Minor Histocompatibility Antigens; D010446:Peptide Fragments / Q000235:genetics / Q000378:metabolism; D011485:Protein Binding; D019253:Proto-Oncogene Proteins c-bcl-2; D051818:Replication Protein C; D012097:Repressor Proteins; D029701:Saccharomyces cerevisiae Proteins
C096816:BCL2-related protein A1; D004268:DNA-Binding Proteins; D018398:Homeodomain Proteins; C096063:MATA1 protein, S cerevisiae; D015778:Minor Histocompatibility Antigens; D010446:Peptide Fragments; D019253:Proto-Oncogene Proteins c-bcl-2; D012097:Repressor Proteins; D029701:Saccharomyces cerevisiae Proteins; D004247:DNA; D051818:Replication Protein C