Kruppel-like factor 13, also known as KLF13, is a protein that in humans is encoded by the KLF13gene.[5][6][7]
There is some evidence for KLF13 having a role in obesity. A methylation site, cg07814318, within the first intron of KLF13 has been associated with obesity and orexigenic processes.[8]Ghrelin levels also positively correlated with methylation levels of cg07814318.[8] Moreover, expression levels of KLF13 were decreased and increased in the brains of starved and obese mice, respectively.[8]
Function
KLF13 belongs to a family of transcription factors that contain 3 classical zinc finger DNA-binding domains consisting of a zinc atom tetrahedrally coordinated by 2 cysteines and 2 histidines (C2H2 motif). These transcription factors bind to GC-rich sequences and related GT and CACCC boxes.[5][9]
KLF13 was first described as the RANTES factor of late activated T lymphocytes (RFLAT)-1.[7] It regulates the expression of the chemokine RANTES in T lymphocytes. It functions as a lynchpin, inducing a large enhancesome. KLF13 knock-out mice show a defect in lymphocyte survival as KLF13 is a regulator of Bcl-xL expression.[7][10][11][12][13][14][15]
^ abcWiemerslage L, Islam R, van der Kamp C, Cao H, Olivo G, Ence-Eriksson F, Castillo S, Larsen AL, Bandstein M, Dahlberg LS, Perland E, Gustavsson V, Nilsson J, Vogel H, Schürmann A, Larsson EM, Rask-Andersen M, Benedict C, Schiöth HB (14 Feb 2017). "A DNA methylation site within the KLF13 gene is associated with orexigenic processes based on neural responses and ghrelin levels". Int J Obes (Lond). 43 (6): 990–994. doi:10.1038/ijo.2017.43. PMID28194012. S2CID52835570.
^Scohy S, Gabant P, Van Reeth T, Hertveldt V, Drèze PL, Van Vooren P, Rivière M, Szpirer J, Szpirer C (Nov 2000). "Identification of KLF13 and KLF14 (SP6), novel members of the SP/XKLF transcription factor family". Genomics. 70 (1): 93–101. doi:10.1006/geno.2000.6362. PMID11087666.
Asano H, Li XS, Stamatoyannopoulos G (Jun 2000). "FKLF-2: a novel Krüppel-like transcriptional factor that activates globin and other erythroid lineage genes". Blood. 95 (11): 3578–84. doi:10.1182/blood.V95.11.3578. PMID10828046.
Scohy S, Gabant P, Van Reeth T, Hertveldt V, Drèze PL, Van Vooren P, Rivière M, Szpirer J, Szpirer C (Nov 2000). "Identification of KLF13 and KLF14 (SP6), novel members of the SP/XKLF transcription factor family". Genomics. 70 (1): 93–101. doi:10.1006/geno.2000.6362. PMID11087666.