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Leucine-rich repeat-containing protein 57 (LRRC57)

Target: LRRC57
Molecular classification: Leucine-rich repeat domain-containing protein (IPR050216), Leucine-rich repeat domain superfamily (IPR032675), Leucine-rich repeat, typical subtype (IPR003591), Disease resistance R13L4/SHOC-2-like, LRR domain (IPR055414), Other (not fitting major classes like GPCR, enzyme, transporter)

Overview

Leucine-rich repeat-containing protein 57 (LRRC57) is a poorly characterized human protein comprising 239 amino acids, encoded by the LRRC57 gene (HGNC: 26719, NCBI Gene: 255252, Ensembl: ENSG00000180979)[3][5][9]. It is classified as a member of the leucine-rich repeat family, which is generally known for mediating protein-protein interactions. LRRC57 is located in extracellular exosomes and displays membranous and cytoplasmic expression in all human tissues[5][8]. The exact biological function is unknown; however, increased expression in the fetal brain has been associated with genetic risk for bipolar disorder, suggesting a possible role in neurodevelopment[1][13]. There are no known structures, direct disease mechanisms, drug interactions, or established pathways, and its role in human disease remains suggestive rather than definitive[2][7][13].

Other names: LRRC57FLJ36812leucine-rich repeat-containing protein 572810002D13RikLOC100910478RGD1307128

Biological functions

Protein-protein interactions (general role of leucine-rich repeat family)Potential involvement in neurodevelopment and brain maturation (suggested by increased expression in fetal brain and association with bipolar risk)Null for other specific biological functions due to lack of experimental evidence

Disease associations

Possible involvement in neuropsychiatric disorders, particularly bipolar disorder (increased expression association, but not established as causal or sufficient for risk)Null for other disease roles (no evidence for cancer, inflammation, etc.)

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