FGSC #55

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Reporting Genes: thi-4

Species: crassa

Allele: 85902

Alternate Strain Number: 3039

Mutagen: M

Depositor: DDP

Linkage Group: IIIC

Mating Type: A

Species Number: 10

Genetic Background: M

Opposite Mating Type: 3941

ref1: Perkins & Ishitani 1959 Genetics 44:1209-1213, https://www.genetics.org/content/44/6/1209.long

ref2: https://searchworks.stanford.edu/view/2139274

Deposit Sheet ↗

Genes

Locus	Cultural Requirements	Link Group	Type
thi-4	III. Linked to acr-2, spg, and sc (< 1%). Left of pro-1(3%) and ace-2 (4 to 9%) (812). (482). Requires thiamine (301). Anomalous in condensation of the pyrimidine and thiazole precursors. Very leaky (301). A probable allele called "thi-lo" greatly increases the thiamine requirement of thi-1 strains and decreases the ability to synthesize thiamine from pyrimidine and thiazole. thi-lo strains have no detectable nutritional requirement in the absence of thi-1. thi-lo failed to recombine with thi-4 among 55 scorable progeny (301).	III	B