TY - JOUR
T1 - Identification of DNA replication and cell cycle proteins that interact with PCNA
AU - Loor, Gabriel
AU - Zhang, Shan Jian
AU - Zhang, Peng
AU - Lan Toomey, N.
AU - Lee, Marietta Y.W.T.
N1 - Funding Information:
This work was supported by a National Institutes of Health Grant GM31973 and a Department of the Army grant DAMD17-96-1-6166 to MYWTL. An account of this work was presented at the ‘Molecular Mechanisms in DNA Replication and Recombination’ meeting in Taos, New Mexico on February 1996.
PY - 1997/12/15
Y1 - 1997/12/15
N2 - The identity of DNA replication proteins and cell cycle regulatory proteins which can be found in complexes involving PCNA were investigated by the use of PCNA immobilized on Sepharose 4B. A column containing bovine serum albumin (BSA) bound to Sepharose was used as a control. Fetal calf thymus extracts were chromatographed on PCNA-Sepharose and BSA-Sepharose. The columns were washed and then eluted with 0.5 M KCl. The salt eluates were examined for the presence of both DNA replication proteins (pol α, δ, ε, PCNA, RFC, RFA, DNA ligase I, NDH II, Topo I and Topo II) and cell cycle proteins (Cyclins A, B1, D1, D2, D3, E, CDK2, CDK4, CDK5 and p21) by western blotting with specific antibodies. The DNA replication proteins which bound to PCNA-Sepharose included DNA polymerase δ and ε, PCNA, the 37 and 40 kDa subunits of RFC, the 70 kDa subunit of RPA, NDH II and topoisomerase I. No evidence for the binding of DNA polymerase α, DNA ligase I or topoisomerase II was obtained. Of the cell cycle proteins investigated, CDK2, CDK4 and CDK5 were bound. This study presents strong evidence that PCNA is a component of protein complexes containing DNA replication, repair and cell cycle regulatory proteins.
AB - The identity of DNA replication proteins and cell cycle regulatory proteins which can be found in complexes involving PCNA were investigated by the use of PCNA immobilized on Sepharose 4B. A column containing bovine serum albumin (BSA) bound to Sepharose was used as a control. Fetal calf thymus extracts were chromatographed on PCNA-Sepharose and BSA-Sepharose. The columns were washed and then eluted with 0.5 M KCl. The salt eluates were examined for the presence of both DNA replication proteins (pol α, δ, ε, PCNA, RFC, RFA, DNA ligase I, NDH II, Topo I and Topo II) and cell cycle proteins (Cyclins A, B1, D1, D2, D3, E, CDK2, CDK4, CDK5 and p21) by western blotting with specific antibodies. The DNA replication proteins which bound to PCNA-Sepharose included DNA polymerase δ and ε, PCNA, the 37 and 40 kDa subunits of RFC, the 70 kDa subunit of RPA, NDH II and topoisomerase I. No evidence for the binding of DNA polymerase α, DNA ligase I or topoisomerase II was obtained. Of the cell cycle proteins investigated, CDK2, CDK4 and CDK5 were bound. This study presents strong evidence that PCNA is a component of protein complexes containing DNA replication, repair and cell cycle regulatory proteins.
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U2 - 10.1093/nar/25.24.5041
DO - 10.1093/nar/25.24.5041
M3 - Article
C2 - 9396813
AN - SCOPUS:0031574202
SN - 0305-1048
VL - 25
SP - 5041
EP - 5046
JO - Nucleic acids research
JF - Nucleic acids research
IS - 24
ER -