ID   PCNA_POPNI              Reviewed;         264 AA.
AC   Q9MAY3;
DT   21-FEB-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2000, sequence version 1.
DT   25-MAY-2022, entry version 62.
DE   RecName: Full=Proliferating cell nuclear antigen;
DE            Short=PCNA;
GN   Name=PCNA;
OS   Populus nigra (Lombardy poplar).
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; fabids; Malpighiales; Salicaceae; Saliceae; Populus.
OX   NCBI_TaxID=3691;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RA   Nishiguchi M.;
RT   "A cDNA clone encoding proliferating cell nuclear antigen (PCNA) from
RT   lombardy poplar.";
RL   Submitted (APR-2000) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: This protein is an auxiliary protein of DNA polymerase delta
CC       and is involved in the control of eukaryotic DNA replication by
CC       increasing the polymerase's processibility during elongation of the
CC       leading strand. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Nucleus.
CC   -!- SIMILARITY: Belongs to the PCNA family. {ECO:0000305}.
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DR   EMBL; AB041506; BAA94512.1; -; mRNA.
DR   AlphaFoldDB; Q9MAY3; -.
DR   SMR; Q9MAY3; -.
DR   GO; GO:0005634; C:nucleus; IEA:UniProtKB-SubCell.
DR   GO; GO:0003677; F:DNA binding; IEA:UniProtKB-KW.
DR   GO; GO:0030337; F:DNA polymerase processivity factor activity; IEA:InterPro.
DR   GO; GO:0006260; P:DNA replication; IEA:UniProtKB-KW.
DR   GO; GO:0006275; P:regulation of DNA replication; IEA:InterPro.
DR   HAMAP; MF_00317; DNApol_clamp_arch; 1.
DR   InterPro; IPR000730; Pr_cel_nuc_antig.
DR   InterPro; IPR022649; Pr_cel_nuc_antig_C.
DR   InterPro; IPR022659; Pr_cel_nuc_antig_CS.
DR   InterPro; IPR022648; Pr_cel_nuc_antig_N.
DR   Pfam; PF02747; PCNA_C; 1.
DR   Pfam; PF00705; PCNA_N; 1.
DR   PRINTS; PR00339; PCNACYCLIN.
DR   TIGRFAMs; TIGR00590; pcna; 1.
DR   PROSITE; PS01251; PCNA_1; 1.
DR   PROSITE; PS00293; PCNA_2; 1.
PE   2: Evidence at transcript level;
KW   DNA replication; DNA-binding; Nucleus.
FT   CHAIN           1..264
FT                   /note="Proliferating cell nuclear antigen"
FT                   /id="PRO_0000149186"
FT   DNA_BIND        61..80
FT                   /evidence="ECO:0000255"
SQ   SEQUENCE   264 AA;  29139 MW;  85D20404ECF3B6D5 CRC64;
     MLELRLVQGS LLKKVLESIK DLVNDANFDF SSSGFSLQSM DSSHVALVAL LLKSEGFEHY
     RCDRNTSMGM NLGNMSKMLK CAGNDDIITI KGDDGSDTVT FMFESPTQDK IADFEMKLMD
     IDSEHLGIPE AEYHAIVKMP SAEFARICKD LASIGDTVVI SVTKEGVKFS TRGDIGTANI
     VLRQNTTVDK PEDATVIEMN EPVSMTFALR YMNSFTKATP LSNTVTISMS PDLPVVVEYK
     IAEMGYVRFY LAPKMEEDEP EPGA