TABLE 1.

Yeast strains used in this study

Strain	Genotype	Background
BR2495a		BR2495
MY152b	BR2495 but homozygous zip1∷URA3	BR2495
NMY101	MY152 plus pRS315-zip1ΔB	BR2495
NMY102	MY152 plus pRS315-zip1ΔC	BR2495
NMY103	MY152 plus pRS315-zip1ΔD	BR2495
NMY104	MY152 plus pRS315-zip1ΔE	BR2495
NMY105	MY152 plus pRS315-zip1ΔF	BR2495
NMY106	MY152 plus pRS315-zip1ΔG	BR2495
NMY107	MY152 plus pRS315-zip1ΔH	BR2495
NMY109	MY152 plus pRS315-zip1ΔJ	BR2495
NMY111	MY152 plus pRS315-ZIP1	BR2495
NMY112	MY152 plus pRS315-zip1-4LA	BR2495
NMY113	MY152 plus pRS315	BR2495
NMY276	MY152 plus pRS315-zip1-L643A	BR2495
NMY278	MY152 plus pRS315-zip1-L650A	BR2495
NMY280	MY152 plus pRS315-zip1-L657A	BR2495
NMY282	MY152 plus pRS315-zip1-L664A	BR2495
NMY274c		BR1919-8B 2n
NMY363	NMY274 but homozygous zip1-4LA	BR1919-8B 2n
NMY364	NMY274 but homozygous zip1∷URA3	BR1919-8B 2n
NMY233		BR1919-8B 2n
NMY533	NMY274 but homozygous ndt80∷LEU2 zip1-4LA	BR1919-8B 2n
NMY539	NMY274 but homozygous ndt80∷LEU2	BR1919-8B 2n
NMY385	NMY274 but homozygous spo11∷ADE2 zip1-4LA	BR1919-8B 2n
NMY422	NMY274 but homozygous spo11∷ADE2	BR1919-8B 2n
NMY602	NMY274 but homozygous rad17∷LEU2 zip1-4LA	BR1919-8B 2n
NMY605	NMY274 but homozygous rad17∷LEU2 zip1∷URA3	BR1919-8B 2n
NMY608	NMY274 but homozygous rad17∷LEU2	BR1919-8B 2n
NMY611	NMY274 but homozygous ddc1∷ADE2 zip1-4LA	BR1919-8B 2n
NMY614	NMY274 but homozygous ddc1∷ADE2 zip1∷URA3	BR1919-8B 2n
NMY617	NMY274 but homozygous ddc1∷ADE2	BR1919-8B 2n
NMY644	NMY274 but homozygous mec3∷TRP1 zip1-4LA	BR1919-8B 2n
NMY647	NMY274 but homozygous mec3∷TRP1 zip1∷URA3	BR1919-8B 2n
NMY641	NMY274 but homozygous mec3∷TRP1	BR1919-8B 2n
NMY340	NMY274 but homozygous swe1∷KanMX4 zip1-4LA	BR1919-8B 2n
NMY345	NMY274 but homozygous swe1∷KanMX4 zip1∷URA3	BR1919-8B 2n
NMY432	NMY274 but homozygous swe1∷KanMX4	BR1919-8B 2n
NMY650d		BR1919-8B 2n
NMY661	NMY650 but homozygous pch2∷HphMX4 zip1-4LA	BR1919-8B 2n
NMY664	NMY650 but homozygous pch2∷HphMX4 zip1∷KanMX4	BR1919-8B 2n
NMY654	NMY650 but homozygous pch2∷HphMX4	BR1919-8B 2n
NMY562	NMY274 but homozygous swe1∷KanMX4 pch2∷URA3 zip1-4LA	BR1919-8B 2n
NMY559	NMY274 but homozygous swe1∷KanMX4 pch2∷URA3 zip1∷LYS2	BR1919-8B 2n
NMY565	NMY274 but homozygous swe1∷KanMX4 pch2∷URA3	BR1919-8B 2n
NMY268e	NMY274 but MATα-bearing chromosome III is circular	BR1919-8B 2n
NMY270		BR1919-8B 2n
NMY272		BR1919-8B 2n
NMY671		BR1919-8B 2n
NMY672	NMY268 but homozygous pch2-HphMX4 zip1-KanMX4	BR1919-8B 2n
NMY673		BR1919-8B 2n
NMY471f	NMY274 but MATα-bearing chromosome III is circular and congenic with
		BR1919-8B 2n
NMY472f	NMY274 but MATα-bearing chromosome III is circular and congenic with
		BR1919-8B 2n
NMY473f	NMY274 but MATα-bearing chromosome III is circular and congenic with
		BR1919-8B 2n
NMY401	NMY274 but homozygous zip1-ΔC	BR1919-8B 2n
NMY402	NMY274 but homozygous zip1-ΔD	BR1919-8B 2n
NMY403	NMY274 but homozygous zip1-ΔE	BR1919-8B 2n
NMY404	NMY274 but homozygous zip1-ΔF	BR1919-8B 2n
NMY405	NMY274 but homozygous zip1-ΔJ	BR1919-8B 2n
NMY461g		SK1
NMY462g		SK1
NMY463g		SK1

^aBR2495 was described by Rockmill and Roeder (1990). The MATα parent of BR2495 is BR1919-8B (Rockmill and Roeder 1990).

^bMY152 was described by Sym and Roeder (1995).

^cNMY274 is a diploid strain whose MATα haploid parent is isogenic with BR1919-8B (Rockmill and Roeder 1990) and whose MATa haploid parent was generated by switching the mating type of BR1919-8B (Rockmill et al. 1995).

^dNMY650 is isogenic with NMY274 except for the markers noted, including a copy of ADE2 inserted at an ectopic location on chromosome III (designated iADE2).

^eNMY268 is a diploid consisting of a MATα strain isogenic with BR1919-8B that carries a circular version of chromosome III and is spo13∷URA3 mated to MATa BR1919-8B.

^fNMY471–NMY473 are diploids consisting of a MATα strain congenic with BR1919-8B that carries a circular version of chromosome III and is swe1∷KanMX4 zip1∷LEU2 mated to MATa BR1919-8B strains that are swe1∷KanMX4 and ZIP1 (NMY471) or zip1-4LA (NMY472) or zip1∷URA3 (NMY473).

^gNMY461–NMY463 are isogenic with SK1 (Alani et al. 1987).