Supplement Table 2: Genes encoding ERK pathway components and some of known direct ERK targets Abbreviation and gene description Official symbol and name: Locus ERK pathway components RAF1: v-raf-1 murine 3p25 leukemia viral oncogene homolog 1 BRAF: v-raf murine 7q34 sarcoma viral oncogene homolog B1 MAP2K1: mitogen-activated 15q22.1protein kinase kinase 1 q22.33 MAP2K2: mitogen-activated 19p13.3 protein kinase kinase 2 MAPK3: mitogen-activated 16p11.2 protein kinase MAPK1: mitogen-activated 22q11.21a protein kinase 1 Some of known direct ERK targets RSK1: Ribosomal RPS6KA1: ribosomal 1p36.11a protein S6 kinase 1 protein S6 kinase, 90kDa, polypeptide 1 RSK2: Ribosomal RPS6KA2: ribosomal 6q27 protein S6 kinase 2 protein S6 kinase, 90kDa, polypeptide 2 RSK3: Ribosomal RPS6KA3: ribosomal Xp22.2protein S6 kinase 3 protein S6 kinase, 90kDa, p22.1a polypeptide 3 MSK1: Mitogen- and RPS6KA5: ibosomal protein 14q31stress-activated protein S6 kinase, 90kDa, q32.1 kinase-1 polypeptide 5 MSK2: Mitogen- and RPS6KA6: ribosomal Xq21 stress-activated protein protein S6 kinase, 90kDa, kinase-2 polypeptide 6 CRY1:Cryptochrome-1 CRY1:Cryptochrome-1 12q23q24.1 (9) CRY2: Cryptochrome-2 CRY21:Cryptochrome-2 11p11.2 (9) BMAL1: brain and ARNTL: aryl hydrocarbon 11p15 muscle Arnt-like protein receptor nuclear translocator1 like Raf-1: v-raf-1 murine leukemia viral oncogene homolog 1 B-Raf: v-raf murine sarcoma viral oncogene homolog B1 MEK1: MAPK/ERK kinase 1 MEK2: MAPK/ERK kinase 2 ERK1: extracellular signal-regulated kinase 1 ERK2: Extracellular signal-regulated kinase 2 Genes or loci implicated in mood disorder genetic studies No Yes (1) No Yes (2, 3) No Yes (2, 4-6) Yes (7) No Yes (8) No No Yes (10) Yes (11) Yes (13); (1418) (12) I-2: Phosphatase Inhibitor-2 (19) Spinophilin or neurabin II (21) ELK1 HDAC4: histone deacetylase 4 (22) Synapsin I (23) Kv4.2: POTASSIUM VOLTAGE-GATED CHANNEL, SHALRELATED SUBFAMILY, MEMBER 2; KCND2 (24) GABAA alpha 1 receptor (25) PPP1R2: protein phosphatase 1, regulatory (inhibitor) subunit 2 PPP1R9B: protein phosphatase 1, regulatory subunit 9B, spinophilin ELK1: ELK1, member of ETS oncogene family HDAC4: histone deacetylase 4 3q29 Yes (20) 17q21.33 No Xp11.2 No 2q37.2 No SYN1 Xp11.23 MAO-B 7q31 No 5q34-q35 Yes (26, 27) KCND2: potassium voltagegated channel, Shal-related subfamily, member 2 GABRA1: gammaaminobutyric acid (GABA) A receptor, alpha Yes (4) References: 1. 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