{"type": "root", "children": [{"type": "p", "children": [{"type": "t", "text": "\nRecent investigations into membrane transporters and regulatory proteins have illuminated mechanisms governing cellular homeostasis in diverse tissues such as bone, kidney, gastrointestinal tract, and mammary gland. Although TTC23L is not directly examined in these studies, the research on related proteins—including a novel Na(+)/H(+) exchanger implicated in osteoclast differentiation and several other NHE isoforms involved in pH regulation and epithelial repair—provides a conceptual framework for considering TTC23L’s potential role in similar cellular processes."}, {"type": "fg", "children": [{"type": "fg_f", "ref": "1"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nThe examined abstracts underscore the critical contribution of membrane-associated proteins to cellular signaling and transport. In particular, Na(+)/H(+) exchangers such as NHE10, NHE2, and NHE3 are shown to regulate acid–base homeostasis, epithelial restitution, and electrolyte absorption in multiple cell types, while related proteins (for example, FLJ25439) are implicated in processes such as cytokinesis and the regulation of cell cycle progression. TTC23L, by virtue of its tetratricopeptide repeat domains—a structural motif frequently mediating protein–protein interactions and scaffolding functions—could be anticipated to participate in the assembly or regulation of multi‐protein complexes that coordinate transporter activity or cell signaling cascades essential for these processes."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "3", "end_ref": "6"}]}, {"type": "t", "text": ""}]}, {"type": "t", "text": "\n\n"}, {"type": "p", "children": [{"type": "t", "text": "\nGenetic studies further highlight the impact of regulator proteins on transporter expression and function in physiologically demanding contexts such as mineral homeostasis and renin secretion. Although the role of TTC23L is not directly probed in these works, analogous data—ranging from the modulation of the renin–angiotensin system by NHE2 in macula densa cells to the regulation of electrolyte transport in the mammary gland—suggest that a protein harboring tetratricopeptide domains may likewise be involved in transcriptional or post‐transcriptional regulation of transport proteins. In light of its putative scaffolding capacity, TTC23L might therefore integrate signals from diverse pathways to modulate cellular transport and division."}, {"type": "fg", "children": [{"type": "fg_fs", "start_ref": "7", "end_ref": "11"}]}, {"type": "t", "text": ""}]}, {"type": "rg", "children": [{"type": "r", "ref": 1, "children": [{"type": "t", "text": "Seoung Hoon Lee, Taesoo Kim, Eui-Soon Park, et al. "}, {"type": "b", "children": [{"type": "t", "text": "NHE10, an osteoclast-specific member of the Na+/H+ exchanger family, regulates osteoclast differentiation and survival [corrected]."}]}, {"type": "t", "text": " "}, {"type": "i", "children": [{"type": "t", "text": "Biochem Biophys Res Commun (2008)"}]}, {"type": "t", "text": " DOI: "}, {"type": "a", "children": [{"type": "t", "text": "10.1016/j.bbrc.2008.01.168"}], "href": "https://doi.org/10.1016/j.bbrc.2008.01.168"}, {"type": "t", "text": " PMID: "}, {"type": "a", "children": [{"type": "t", "text": "18269914"}], "href": "https://pubmed.ncbi.nlm.nih.gov/18269914"}]}, {"type": "r", "ref": 2, "children": [{"type": "t", "text": "O Bachmann, B Riederer, H Rossmann, et al. 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