Functions of replication factor C and proliferating-cell nuclear antigen: Functional similarity of DNA polymerase accessory proteins from human cells and bacteriophage T4

Journal Article · Thu Feb 01 00:00:00 EST 1990 · Proceedings of the National Academy of Sciences of the United States of America; (USA)

DOI:https://doi.org/10.1073/pnas.87.3.1023· OSTI ID:6719272

Tsurimoto, Toshiki; Stillman, B ^[1]

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1. Cold Spring Harbor Laboratory, NY (USA)

The proliferating-cell nuclear antigen (PCNA) and the replication factors A and C (RF-A and RF-C) are cellular proteins essential for complete elongation of DNA during synthesis from the simian virus 40 origin of DNA replication in vitro. All three cooperate to stimulate processive DNA synthesis by DNA polymerase {delta} on a primed single-stranded M13 template DNA and as such can be categorized as DNA polymerase accessory proteins. Biochemical analyses with highly purified RF-C and PCNA have demonstrated functions that are completely analogous to the functions of bacteriophage T4 DNA polymerase accessory proteins. A primer-template-specific DNA binding activity and a DNA-dependent ATPase activity copurified with the multisubunit protein RF-C and are similar to the functions of the phage T4 gene 44/62 protein complex. Furthermore, PCNA stimulated the RF-C ATPase activity and is, therefore, analogous to the phage T4 gene 45 protein, which stimulates the ATPase function of the gene 44/62 protein complex. Indeed, some primary sequence similarities between human PCNA and the phage T4 gene 45 protein could be detected. These results demonstrate a striking conservation of the DNA replication apparatus in human cells and bacteriophage T4.

• OSTI ID: 6719272
• Journal Information: Proceedings of the National Academy of Sciences of the United States of America; (USA), Vol. 87:3; ISSN 0027-8424
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
ANTIGENS
BIOCHEMISTRY
ATP-ASE
ENZYME ACTIVITY
DNA REPLICATION
MOLECULAR BIOLOGY
BACTERIOPHAGES
BIOLOGICAL EVOLUTION
DNA POLYMERASES
DNA SEQUENCING
PROTEINS
ACID ANHYDRASES
CHEMISTRY
ENZYMES
HYDROLASES
MICROORGANISMS
NUCLEIC ACID REPLICATION
NUCLEOTIDYLTRANSFERASES
ORGANIC COMPOUNDS
PARASITES
PHOSPHOHYDROLASES
PHOSPHORUS-GROUP TRANSFERASES
POLYMERASES
STRUCTURAL CHEMICAL ANALYSIS
TRANSFERASES
VIRUSES
550201* - Biochemistry- Tracer Techniques