FGSC #7564

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Reporting Genes: nit-6 ylo-1 un-23

Species: crassa

Allele: OP4 Y30539y 64D

Alternate Strain Number: 6167

Depositor: DDP

Linkage Group: VIL L R

Mating Type: a

Species Number: 10

Opposite Mating Type: 7563

Deposit Sheet ↗

Genes

Locus	Cultural Requirements	Link Group	Type
nit-6	VIL. Right of chol-2 (6%). Left of ser-7 (10%) and ad-8(17%) (PB; O.C. Yoder, personal communication). Unable to use nitrate or nitrite as a nitrogen source (185). Lacks nitrite reductase (185) (Fig. 19), which is subject to positive nitrogen metabolite repression (186). Affected by nit-2 and MS5 regulator genes (838, 1076a) (see nmr-1). Used to study repression of nitrate reductase (26) and nonenzymatic reduction of nitrite (185). Induced by nitrite (198).	VIL	B
ylo-1	VIL. Between cys-1 (8%) and ad-1 (6%). Probably right of Bml (2%) (1012, PB). (381). Yellow carotenoids (381). Affects synthesis of neurosporaxanthin (4'-apo-beta'-caroten-4'-oic acid); citations in reference 398. Lesion probably involves the conversion of lycopene to 3,4-dehydrolycopene or the conversion of either torulene or gamma-carotene to neurosporaxanthin (398 and references therein) (Fig. 9). Resembles the orange wild type in young cultures, but color differences become clear with age. Expressed in both conidia and mycelia. Undefined modifiers affect intensity. Fails to complement with many of the al-1 and al-2 albino strains (R.E. Subden, personal communication).	VIL	B
un-23	VIR. Right of trp-2 (5 to 27%). Left of ws-1 (1019; D.D. Perkins, unpublished data). Unknown function. Heat sensitive, growing at 20°C but not at 28°C. Called un(64D). (1019).	VIR	B