Recombinant Human Calcium-activated potassium channel subunit alpha-1 (KCNMA1), partial

1. Data suggest that BKCa channels play important role in cell cycle progression and cell self-renewal in cardiac stem cells. PMID:29211342
2. KCNMA1 mutation causes epilepsy and changes voltage gating but not calcium sensitivity. PMID:29330545
3. Data suggest that large-conductance calcium-activated potassium channels, alpha subunit (BK channel) mutations affect the Ca2 +-sensing more than the voltage- sensing mechanism. PMID:28966112
4. An important role of BKCa in proliferation and migration of endometrial cancer HEC-1-B cells. PMID:29477869
5. Study identified a novel tumor suppressive gene, KCNMA1, which is frequently inactivated in gastric cancer because of promoter methylation. KCNMA1 exerts a tumor suppressive function by regulating the PTK2 expression to activate the PI3K-AKT pathway. PMID:28231797
6. High BKCA expression is associated with breast cancer. PMID:26993604
7. Heme-independent activation of the CFTR channel and the Slo1 BKCa channel by carbon monoxide (CO) may represent two different modes of gating regulation of ion channels by CO. In the case of CFTR, Fe3+ is bound to the R-ICL3 interface.15,16 This interfacial Fe3+ site is formed by traditional coordination ligands such as H950 and H954 from ICL3 and C832 and D836 from the R domain.[Review] PMID:28474046
8. High BK channel is associated with glioblastoma. PMID:26893360
9. Oxidant signaling underlies PKGIalpha modulation of Ca2+ sparks and BKCa in myogenically active arterioles PMID:27729549
10. These results provide further insights into the mechanism of modulation of the different N-terminal regions of the BKCa channel by beta-subunits. PMID:28750098
11. Thiourea derivative, compound 326, stimulates the activity of large-conductance, calcium-activated potassium channels. PMID:28075010
12. Implicating both KCa1.1 and KCa3.1 channels. PMID:28028617
13. These results identify KCa1.1 channels as crucial regulators of skeletal myogenesis. PMID:27763639
14. Results show that reduced miR-17 expression is correlated with increased expression of KCNMA1 in malignant pleural mesothelioma. Computational analysis identified KCNMA1 gene is a direct target of miR-17. PMID:27245839
15. These findings provide significant new evidence that BKalphaDeltae2 can modulate cellular responses to physiological stimuli in human chondrocyte and contribute under pathophysiological conditions, such as osteoarthritis. PMID:27758860
16. Our report defines a novel autosomal recessive KCNMA1-related epileptic phenotype that encompasses cerebellar atrophy without paroxysmal dyskinesia, and highlights the sensitivity of the developing brain to both increased and decreased activity of the KCNMA1-encoded channels PMID:27567911
17. A directed proteomic approach discovered the novel interaction of BKCa with Tom22, a component of the mitochondrion outer membrane import system, and the adenine nucleotide translocator (ANT). PMID:27592226
18. GSK3b may up-regulate BK channels, an effect disrupted by lithium or additional expression of AKT and possibly participating in the regulation of cell volume and excitability. PMID:27537208
19. MiR-31 represses KCNMA1 expression. PMID:26386726
20. By introducing lanthanide binding tags in the extracellular region of the alpha- or beta1-subunit, we determined (i) a basic extracellular map of the BK channel, (ii) beta1-subunit-induced rearrangements of the voltage sensor in alpha-subunits, and (iii) the relative position of the beta1-subunit within the alpha/beta1-subunit complex. PMID:27217576
21. Suggest that BK channel modulation by auxiliary gamma subunits depends on intra- and/or juxta-membrane mechanisms. PMID:26009545
22. Suberoylanilide hydroxamic acid enhanced the expression of malignant genes such as KCNMA1 in lung cancer cells remaining after treatment, creating a more drug-resistant state. PMID:25796627
23. We conclude that arachidonic acid itself selectively activates the beta1-associated BKCa channel, destabilizing its closed state probably by interacting with the beta1-subunit, without modifying the channel voltage sensitivity PMID:24375290
24. The present study revealed that 11,12-EET targets the TRPV4-TRPC1-KCa1.1 complex to induce smooth muscle cell hyperpolarization and vascular relaxation in human LIMAs. PMID:25511389
25. DS-201 selectively targets the pore-forming alpha subunit of human BKCa channels, thus enhancing the channel activities and increasing the subunit expression and trafficking. PMID:25345746
26. Bisphenol A activates BK alpha via an extracellular site and that Bisphenol A-sensitivity is increased by the beta1 subun PMID:24476761
27. show that Slo1 is localized to the sperm flagellum and is inhibited by progesterone. Inhibition of hKSper by progesterone may depolarize the spermatozoon to open the calcium channel CatSper PMID:24137539
28. our results strongly suggest that AT1R regulates BK channels through a close protein-protein interaction involving multiple BK regions and independent of G-protein activation. PMID:25070892
29. hSlo1c associates with Cav-1 in human brain microvascular endothelial cells.A 57-amino acid (966-1022) fragment in hSlo1c was identified to be critical for hSlo1c/Cav-1 interaction. PMID:24705869
30. Recombinant martentoxin selectively blocks KCNMA1/KCNMB4 channels. PMID:24759175
31. HIV and methamphetamine -induced elevated miR-9 lead to suppression of miR-response element-containing splice variants of KCNMA1 PMID:23508624
32. Overexpression of JAK2 in alveolar rhabdomyosarcoma cells significantly enhanced BK channel mRNA and protein abundance. PMID:24696148
33. The reduced KCa1.1 channel protein expression was also observed. PMID:24260325
34. Here we examined the action of docosahexaenoic acid on the Slo1 channel without any auxiliary subunit and sought to elucidate the biophysical mechanism and the molecular determinants of the DHA sensitivity. PMID:24127525
35. N-terminal isoforms of the large-conductance Ca(2)-activated K channel are differentially modulated by the auxiliary beta1-subunit. PMID:24569989
36. Overexpression of KCNMA1, the pore-forming subunit of BK, overcame the reduction of airway surface liquid volume induced by IFN-gamma. PMID:24414257
37. The SLO1 gating ring is not required for voltage activation but is required for Ca2+ and Mg2+ activation. PMID:24067659
38. A novel Cav3-KCa1.1 signaling complex has been identified where Cav3-mediated calcium entry enables KCa1.1 activation over a wide range of membrane potentials. PMID:23626738
39. BK-IS1 (44-113) alpha subunit has been over-expressed using a bacterial system and purified in the presence of detergent micelles for multidimensional heteronuclear nuclear magnetic resonance (NMR) structural studies. PMID:23831469
40. BK(Ca) as a crucial part of the signaling cascade of LH/hCG in Leydig cells. PMID:23267835
41. These results strongly suggest that cav3 possesses direct interaction with KCa1.1, presumably at the same domain for cav1 binding. PMID:23237801
42. whole-cell current, spontaneous transient outward current, and Ca(2+) sensitivity of BK(Ca) channels are reduced in human vascular smooth muscle cells. This may account for the dysfunction of artery relaxation in primary hypertension. PMID:23232643
43. enhanced expression of KCNMA1 correlates with and contributes to high proliferation rate and malignancy of breast cancer. PMID:22899999
44. Phosphodiesterase blockade causes relaxation of human urinary bladder smooth muscle by increasing transient K(Ca)1.1 channel current activity, hyperpolarizing cell membrane potential, and decreasing the global intracellular Ca(2+). PMID:22896041
45. TM1 of the beta2-subunit physically binds to the transmembrane S1 domain of the alpha-subunit of BK potassium channels PMID:22710124
46. The effects of protein kinase C on Slo surface expression might be indirect; when clustered on hair cell membranes, Slo contributes to increasing amounts of channel clusters on high-frequency responsiveness of hair-cell membranes. PMID:22538239
47. Multiple cholesterol recognition/interaction amino acid consensus (CRAC) motifs in cytosolic C tail of Slo1 subunit determine cholesterol sensitivity of Ca2+- and voltage-gated K+ (BK) channels. PMID:22474334
48. These studies identify for the first time a central role for beta-catenin in mediating Slo surface expression. PMID:22194818
49. BK(Ca) channels are involved in the response of podocytes to chronic hypoxia via the upregulation of the beta4-subunit. PMID:22446331
50. Cym04 reversibly left-shifts the Slo1 half-activation voltage. It interacts with the S6/RCK linker & mimics site-specific shortening of this passive spring, transmiting force from the cytosolic gating ring structure opening the channel's gate. PMID:22331907

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HGNC: 6284

UNIGENE: Hs.144795

KEGG: hsa:3778

OMIM: 600150