Table 1 Transgenic mice use in this study.

From: Genetic targeting of adult Renshaw cells using a Calbindin 1 destabilized Cre allele for intersection with Parvalbumin or Engrailed1

Name

Brief description & source

En1-Cre; En1 tm2(cre)Wrst/J; Cre

Cre inserted into ATG of 2nd exon18. Donating invetsigator Dr. Martyn Goulding, Salk Institute

Mafb-GFP

EGFP inserted in MafB gene23. Donating invetsigator Dr. Satoru Takashi, Tsukuba University

Calb1-dgCre; B6.Cg-Gt(ROSA)26Sortm9(CAG-tdTomato)Hze/J

Viral 2A oligopeptide and destabilized EGFP/Cre fusion gene (dgCre) inserted downstream of Calb1 stop codon39 (JAX#023531). Donating investigator Hongkui Zeng, Allen Institute for Brain Science

Pvalb-Flpo; Pvalb-2A-FlpO-D

Viral 2A oligopeptide and Flp inserted downstream of PV stop codon24 (JAX#022730). Donating investigator Dr. Hongkui Zeng, Allen Institute for Brain Science

En1-Flpo

Flpo was inserted into the ATG in the 1st exon

Ai9 R26 lsl-tdT; B6.Cg-Gt(ROSA)26Sortm9(CAG-tdTomato)Hze/J)

lox-flanked CAG-tdTomato-WRE Cre reporter targeted to the R26 locus40 (JAX#007909). Donating investigator Dr. Hongkui Zeng, Allen Institute for Brain Science

R26 RCE:dual-EGFP; Gt(ROSA)26Sortm1(CAG-EGFP)Fsh/Mmjax

lox- and FRT-flanked CAG-EGFP dual Cre/Flp reporter targeted to the R26 locus41 (MMRRC#032036-JAX) Donating investigator Dr. Gord Fishell, Smilow Research Center, New York University

R26 FLTG; B6.Cg-Gt(ROSA)26Sortm1.3(CAG-tdTomato,-EGFP)Pjen/J

frt-flanked STOP and loxP-flanked tdTomato::STOP dual Cre/Flp reporter upstream of the EGFP targeted to the R26 locus42 (JAX#026932) Donating investigator Dr. Patricia Jensen, National Institute of Environmental Health Sciences

R26 RCE-fsf-GFP

Flp-dependent eGFP reporter under control of the CAG promoter at the R26 locus44 (#32038-JAX) Donating investigator Dr. Gord Fishell, Smilow Research Center, New York University