Role of Gene Length in Control of Human Gene Expression: Chromosome-Specific and Tissue-Specific Effects

Table 2

Tissue specificity of genes in the tissue-targeted database.

	Short genes		Midlength genes		Long genes		All genes
Tissue	All^a	%	All	%	All	%	All	%
Testis	141	27.2	311	24.7	119	18.7	571	23.7
Brain	67	12.9	207	16.5	262	41.2	536	22.2
Spleen	62	12.0	112	8.9	21	3.3	195	8.1
Liver	33	6.4	73	5.8	11	1.7	117	4.9
Skin	27	5.2	61	4.9	9	1.4	97	4.0
Sm. intestine	14	2.7	57	4.5	9	1.4	80	3.3
Esophagus	14	2.7	46	3.7	11	1.7	71	2.9
Kidney	10	1.9	46	3.7	10	1.6	66	2.7
Muscle	12	2.3	33	2.6	16	2.5	61	2.5
Pituitary	15	2.9	31	2.5	16	2.5	62	2.6
Adipose	11	2.1	26	2.1	8	1.3	45	1.9
Heart	7	1.4	25	2.0	16	2.5	48	2.0
Lung	7	1.4	25	2.0	5	0.8	37	1.5
Thyroid	3	0.6	24	1.9	29	4.6	56	2.3
Adrenal	4	0.8	16	1.3	7	1.1	27	1.1
Nerve	4	0.8	16	1.3	15	2.4	35	1.5
Pancreas	14	2.7	12	1.0	2	0.3	28	1.2
Artery	8	1.5	9	0.7	18	2.8	35	1.5
Stomach	8	1.5	11	0.9	2	0.3	21	0.9
Other	57	11.0	116	9.2	50	7.9	223	9.2
Total	518	100.0	1257	100.0	636	100.0	2411	100.0

^aAll 24 chromosomes.