TY - JOUR AU - Zvi Kelman C2 - Nucleic Acids Research DA - 2011-08-05 DO - https://doi.org/10.1093/nar/gkr624 LA - en PB - Nucleic Acids Research PY - 2011 TI - Thermococcus kodakarensis has two functional PCNA homologues but only one is essential for viability ER -