PMID- 10702681 OWN - NLM STAT- MEDLINE DCOM- 20000412 LR - 20171101 IS - 0301-0171 (Print) IS - 0301-0171 (Linking) VI - 87 IP - 3-4 DP - 1999 TI - Identification and chromosomal localization of murine ORC3, a new member of the mouse origin recognition complex. PG - 245-51 AB - A new member of the murine origin recognition complex (ORC) related to Saccharomyces cerevisiae ORC3 has been cloned. Transcription of ORC3 is not suppressed in mouse NIH3T3 fibroblasts made quiescent by serum starvation. The transcription level of the ORC3 gene is constantly high in all phases of the cell cycle. Murine ORC3 protein contains a putative nuclear localization signal and a non-basic helix-loop-helix motif. Both motifs are conserved in eukaryotes. A potential dimerization partner of ORC3p in the murine ORC complex is ORC1p which also contains an HLH motif. This HLH motif is also highly conserved in all eukaryotic ORC1 proteins. Comparison of murine ORC3p with other ORC3-related proteins shows high amino acid homology and motif conservation leading to the conclusion that ORC3p is part of the initiation machinery conserved in eukaryotes. The mouse ORC3 gene Orc3 was assigned to mouse chromosome 4A3 by fluorescence in situ hybridization (FISH) analysis. CI - Copyright 2000 S. Karger AG, Basel FAU - Springer, J AU - Springer J AD - Institute of Biochemistry, Biozentrum, University of Wurzburg, Wurzburg, Germany. FAU - Nanda, I AU - Nanda I FAU - Hoehn, K AU - Hoehn K FAU - Schmid, M AU - Schmid M FAU - Grummt, F AU - Grummt F LA - eng SI - GENBANK/AJ132830 PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Switzerland TA - Cytogenet Cell Genet JT - Cytogenetics and cell genetics JID - 0367735 RN - 0 (DNA, Complementary) RN - 0 (DNA-Binding Proteins) RN - 0 (Fungal Proteins) RN - 0 (ORC3 protein, human) RN - 0 (Orc1 protein, mouse) RN - 0 (Orc3 protein, mouse) RN - 0 (Origin Recognition Complex) RN - 0 (RNA, Messenger) SB - IM MH - 3T3 Cells MH - Amino Acid Sequence MH - Animals MH - Cell Cycle MH - Cloning, Molecular MH - DNA, Complementary/genetics MH - DNA-Binding Proteins/chemistry/*genetics MH - Fungal Proteins/chemistry/genetics MH - Helix-Loop-Helix Motifs/physiology MH - Humans MH - In Situ Hybridization, Fluorescence MH - Mice MH - Molecular Sequence Data MH - Origin Recognition Complex MH - *Physical Chromosome Mapping MH - RNA, Messenger/analysis/genetics MH - Replication Origin/genetics/physiology MH - Sequence Alignment MH - Sequence Homology, Amino Acid EDAT- 2000/03/07 09:00 MHDA- 2000/04/15 09:00 CRDT- 2000/03/07 09:00 PHST- 2000/03/07 09:00 [pubmed] PHST- 2000/04/15 09:00 [medline] PHST- 2000/03/07 09:00 [entrez] AID - 15435 [pii] AID - 10.1159/000015435 [doi] PST - ppublish SO - Cytogenet Cell Genet. 1999;87(3-4):245-51. doi: 10.1159/000015435.