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Entry into anaphase and exit from mitosis depend on a ubiquitin-protein ligase complex called the anaphase-promoting complex (APC) or cyclosome. At least 12 different subunits were detected in the purified particle from budding yeast, including the previously identified proteins Apc1p, Cdc16p, Cdc23p, Cdc26p, and Cdc27p. Five additional subunits purified in low nanogram amounts were identified by tandem mass spectrometric sequencing. Apc2p, Apc5p, and the RING-finger protein Apc11p are conserved from yeast to humans. Apc2p is similar to the cullin Cdc53p, which is a subunit of the ubiquitin-protein ligase complex SCFCdc4 required for the initiation of DNA replication.

Type

Journal article

Journal

Science

Publication Date

20/02/1998

Volume

279

Pages

1216 - 1219

Keywords

Amino Acid Sequence, Anaphase, Anaphase-Promoting Complex-Cyclosome, Animals, Cell Cycle Proteins, Cullin Proteins, Cyclins, DNA Replication, Fungal Proteins, Genes, Fungal, Humans, Ligases, Mass Spectrometry, Molecular Sequence Data, Saccharomyces cerevisiae, Saccharomyces cerevisiae Proteins, Sequence Alignment, Spindle Apparatus, Ubiquitin-Protein Ligase Complexes, Ubiquitin-Protein Ligases, Ubiquitins