Publications by authors named "Saebomi Park"

Background: Krüppel-like factor 4 (KLF4) is a transcription factor that regulates a diverse array of cellular processes, including development, differentiation, proliferation, and apoptosis. Although its function in keratinocytes has been widely studied, its exact role in psoriasis has not been elucidated.

Objective: We designed this study to investigate epidermal expression levels of KLF4 and the change in KLF4 expression after treatment in patients with psoriasis.

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Article Synopsis
  • * The study presents NMR structures showing how CaBP4 changes shape when bound to either Mg²⁺ or Ca²⁺, with two distinct lobes and a flexible N-terminal region.
  • * Specific amino acids on CaBP4 interact with the IQ motif of the calcium channel Cav1.4, and a mutation in Cav1.4 (Y1595E) disrupts this interaction, suggesting that CaBP4 may help activate the channel by altering its inhibitory connections. *
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Calcium-binding protein 4 (CaBP4) regulates voltage-gated Ca(2+) channels in retinal rod cells and specific mutations within CaBP4 are associated with congenital stationary night blindness type 2. We report complete NMR chemical shift assignments of the Ca(2+)-saturated form of CaBP4 with Ca(2+) bound at EF1, EF3 and EF4 (BMRB no. 18877).

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Mucinous nevus is a rare entity classified as either cutaneous mucinosis or connective tissue nevi. Clinically, multiple papules or plaques develop at birth or in early adulthood and grow to form verrucous or nevoid feature with a unilateral or often zosteriform distribution on the trunk. Histopathologically, it is characterized by mucin deposits localized in the papillary dermis, clearly distinguishing this entity from other types of cutaneous mucinosis.

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Calcium-binding protein 1 (CaBP1), a neuron-specific member of the calmodulin (CaM) superfamily, regulates the Ca(2+) -dependent activity of inositol 1,4,5-triphosphate receptors (InsP3Rs) and various voltage-gated Ca(2+) channels. Here, we present the NMR structure of full-length CaBP1 with Ca(2+) bound at the first, third, and fourth EF-hands. A total of 1250 nuclear Overhauser effect distance measurements and 70 residual dipolar coupling restraints define the overall main chain structure with a root-mean-squared deviation of 0.

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The zinc-finger-type transcriptional factor KLF4 is expressed in a variety of tissues including skin. KLF4 can function as either a tumor suppressor or an oncogene, depending on the type of tissue in which it is expressed, by modulating the expression of various factors. To understand the role of KLF4 in human skin cancer and also to evaluate the expression of cyclin D1, p53, and p21(Waf1/Cip1) in relation to the expression of KLF4, we evaluated the pattern of KLF4 expression during UVB-induced skin tumor development in SKH-1 hairless mice and in human skin cancer.

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Calcium-binding protein 1 (CaBP1) regulates inositol 1,4,5-trisphosphate receptors (InsP(3)Rs) and a variety of voltage-gated Ca(2+) channels in the brain. We report complete NMR chemical shift assignments of the Ca(2+)-saturated form of CaBP1 with Ca(2+) bound at EF1, EF3 and EF4 (residues 1-167, BMRB no. 16862).

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