Titin direct and indirect binding partners. The central rectangle depicts the sarcomere positions of different titin segments. The direct titin binding partners are orange ovals; the indirect titin binding partners are yellow rectangles; the direct and indirect titin binding partners with differential expression are red ovals and rectangles. sANK1, small ankyrin 1 isoform; p94, calpain-3; FHL1/2, four-and-a-half-LIM-domain-protein; MyBPC, myosin binding protein C; Nbr1, neighbor-of-BRCA1-gene-1; MURF, muscle-specific-RING-finger-protein; MyHC, myosin-heavy-chain; MyLC, myosin-light-chain; TPM, tropomyosin; CARP, cardiac-ankyrin-repeat-protein; DARP, diabetes-related-ankyrin-repeat-protein; ARPP, ankyrin-repeat-domain-protein-2; TMOD, tropomodulin; MYOT, myotilin; FLNC, Υ-filamin; T-cap, telethonin; minK, potassium-channel subunit; MLP (CRP3), muscle-LIM-protein (cysteine-rich-protein-3); CRP2, muscle-LIM-protein (cysteine-rich-protein-2); ENAH, protein enabled homolog; ANP, atrial natriuretic peptide; BNP, brain natriuretic peptide; KCND2/3, potassium voltage-gated channel subfamily D member 2/3; KCNK2, potassium channel subfamily K member 2; KCNQ1, potassium voltage-gated channel subfamily Q member 1; TNFa-CE (ADAM-17), tumor-necrosisfactor-alpha-converting-enzyme (A-disintegrin-and metalloprotease-17 protein); ADAM33, disintegrin-and metalloprotease-33 protein; IGFBP, insulin growth factor binding protein; ZNF, zinc finger protein; ERK2, extracellular-signal-regulated-kinase-2; ANK2, ankyrin 2; YB-1, Y-box-binding-protein-1; ISOT-3 (USP13), isopeptidase-T-3; USP24, ubiquitin specific peptidase 24; UBC9, SUMO-conjugating enzyme UBC9; UBCH10, SUMO-conjugating enzyme E2C.