title: Molecular cloning of a gene required for DNA replication in Ustilago maydis.
abstract: TSD2, a gene necessary for DNA synthesis in Ustilago maydis, was cloned by complementation of the temperature sensitive growth defect of a mutant known previously as pol1-1 and renamed here tsd2-1. Linkage analysis established that the cloned fragment contained an allele of tsd2-1 and not a suppressor. DNA sequence determination of the cloned DNA fragment indicated the presence of a single large uninterrupted open reading frame capable of encoding a protein of 845 amino acids without homology to any known gene involved in DNA synthesis. TSD2 was found to be cell cycle-regulated and mRNA levels peaked in early S or G1 phase.
authors.affiliation: Department of Microbiology, Cornell University Medical College, New York, NY 10021, USA.
authors.forename: K
authors.initials: K
authors.lastname: Onel
authors.forename: W K
authors.initials: WK
authors.lastname: Holloman
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D018797:Cell Cycle Proteins / Q000737:chemistry / Q000235:genetics*; D003001:Cloning, Molecular; D004261:DNA Replication / Q000235:genetics*; D004271:DNA, Fungal / Q000096:biosynthesis / Q000235:genetics; D005656:Fungal Proteins; D016193:G1 Phase; D015966:Gene Expression Regulation, Fungal; D005800:Genes, Fungal; D005816:Genetic Complementation Test; D008969:Molecular Sequence Data; D016366:Open Reading Frames; D012331:RNA, Fungal / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D016196:S Phase; D017422:Sequence Analysis, DNA; D014588:Ustilago / Q000166:cytology / Q000235:genetics* / Q000378:metabolism
chemical_list: D018797:Cell Cycle Proteins; D004271:DNA, Fungal; D005656:Fungal Proteins; D012331:RNA, Fungal; D012333:RNA, Messenger; C104386:TSD2 protein, Ustilago maydis