Table 2.

Pairwise correlation analysis of subunit gene expression across levels, from single cell to global brain expression

Positive correlations					Negative correlations
Gene	Gene	Subunits	From datasets	Cell class (C,D)	Gene	Gene	Subunits		Cell class (C,D)
GABRA1	GABRB2	α1−β2	A,B,C,D	Exc, 1 Inh	GABRA1	GABRA2	α1, α2	B,C,D	9 Exc, 2 Inh
GABRA1	GABRD	α1−δ	B,D	1 Exc	GABRA1	GABRA3	α1, α3	B,D	1 Exc
GABRA2	GABRA4	α2−α4	A,C	Exc, Inh	GABRA1	GABRA4	α1, α4	C,D	4 Exc, 2 Inh
GABRA2	GABRB1	α2−β1	A,B		GABRA1	GABRA5	α1, α5	D	2 Exc, 1 Inh
GABRA2	GABRB3	α2−β3	A,D	1 Inh	GABRA1	GABRB1	α1, β1	A,B,C,D	1 Exc, 1 Inh
GABRA3	GABRB1	α3−β1	A,B,C,D	1 Exc	GABRA1	GABRB3	α1, β3	A,C
GABRA4	GABRB2	α4−β2	B,D	1 Exc	GABRA1	GABRG1	α1, γ1	A,B,C
GABRA4	GABRD	α4−δ	B,C	Exc	GABRA2	GABRA4	α2, α4	B,D	1 Exc
GABRB1	GABRB3	β1−β3	A,C	Inh	GABRA2	GABRB2	α2, β2	B,C,D	1 Exc, 1 Inh
GABRB1	GABRG1	β1−γ1	A,B		GABRA2	GABRG2	α2, γ2	B,D	1 Inh
					GABRA3	GABRD	α3, δ	A,B
					GABRA5	GABRB2	α5, β2	B,C	Inh
					GABRA5	GABRG2	α5, γ2	B,C
					GABRA5	GABRG2	α5, δ	B,C
					GABRB1	GABRB2	β1, β2	A,B,C,D	2 Exc, 4 Inh
					GABRB1	GABRB3	β1, β3	D	2 Exc
					GABRB1	GABRAD	β1, δ	A,B,C,D	1 Exc
					GABRB2	GABRB3	β2, β3	D	11 Exc, 3 Inh
					GABRB2	GABRG1	β2, γ1	A,B,C,D	1 Exc
					GABRB3	GABRG2	β3, γ2	C,D	1 Inh
					GABRG1	GABRG2	γ1, γ2	B,D	4 Exc
					GABRG1	GABRD	γ1, δ	A,B
					GABRG2	GABRD	γ2, δ	A,D	4 Exc, 3 Inh

Dataset A: Allen Atlas Microarray study, Dataset B: Aging, Dementia and Traumatic Brain Injury study, Datasets C and D: Allen Institute Cell-type study across excitatory and inhibitory cells and within each cell-type cluster, respectively. Cell class was determined from datasets C and D. Subunits in bold indicate pairs with positive and negative correlations across different analyses