Compact Permanent Magnetic Circuit with Periodic Magnetic Field Designed for Studies of Liquid Crystals

Hirai, Mitsuhiro; Mitsuya, S; Iwase, Hiroki; Hayakawa, Tomohiro; Aoyama, Yuka; Ohashi, K.; Sano, You

doi:10.1080/10587250108028685

Cited by 1 publication

(8 citation statements)

References 13 publications

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“…In the magnetic circuit (Figure 5a,b), the ferromagnetic, ferrimagnetic, paramagnetic, and antiferromagnetic particles at sample position numbers 3–5 move toward 4 25,26 . Conversely, the diamagnetic particles at sample position numbers 4–6 move toward 5.…”

Section: Resultsmentioning

confidence: 99%

“…The magnetic response analyses of clISCA1 by SAXS measurements with a periodic Nd–Fe–B permanent magnetic circuit were conducted at BL‐10C at PF (Figure 5a). 25,26 In the magnetic circuit, the magnetic flux B and its gradient Δ B along the x ‐axis are proportional to

\sin x

and

\cos x

, respectively (Figure 5b). 25,26 Here, x is the sample position on the x‐axis described in radians.…”

Section: Methodsmentioning

confidence: 99%

“…However, effect of the magnetic field on the structure and molecular behavior of clISCA1 has not been elucidated, making it challenging to discern the magnetic orientation mechanism of the clCRY4/clISCA1 oligomer and the function of clISCA1 on biomagnetoreception 20–24 . In this article, we report the magnetic field effects on the structure and molecular behavior of clISCA1 clarified by small‐angle X‐ray scattering (SAXS) analyses coupled with the SEC‐SAXS and an Nd–Fe–B permanent magnetic circuit device 25,26 . Here, a strong magnetic field (~1 T) was utilized to clearly detect the magnetic field effects on clISCA1 in the same manner as the magnetic orientation studies of some other biomacromolecules 17–19,25,26 …”

Section: Introductionmentioning

confidence: 99%

“…20-24 24 In this article, we report the magnetic field effects on the structure and molecular behavior of clISCA1 clarified by small-angle X-ray scattering (SAXS) analyses coupled with the SEC-SAXS and an Nd-Fe-B permanent magnetic circuit device. 25,26 Here, a strong magnetic field ($1 T) was utilized to clearly detect the magnetic field effects on clISCA1 in the same manner as the magnetic orientation studies of some other biomacromolecules. [17][18][19]25,26 2 | RESULTS AND DISCUSSION…”

Section: Introductionmentioning

confidence: 99%

“…25,26 Here, a strong magnetic field ($1 T) was utilized to clearly detect the magnetic field effects on clISCA1 in the same manner as the magnetic orientation studies of some other biomacromolecules. [17][18][19]25,26 2 | RESULTS AND DISCUSSION…”

Section: Introductionmentioning

confidence: 99%

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Magnetic field effects on the structure and molecular behavior of pigeon iron–sulfur protein

et al. 2022

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Pigeon iron–sulfur (Fe–S) cluster assembly 1 homolog (clISCA1) is a target protein for research into the biomagnetoreception mechanism, as the clCRY4/clISCA1 oligomer, a complex composed of the columnar clISCA1 oligomer and the magnetosensor candidate protein cryptochrome‐4 (clCRY4) oligomer, tends to orient itself along weak magnetic fields, such as geomagnetic fields, under blue light. To obtain insight into the magnetic orientation mechanism of the clCRY4/clISCA1 oligomer, we inspected magnetic field effects on the structure and molecular behavior of clISCA1 by small angle X‐ray scattering analysis. The results indicated that the clISCA1 protomer took the Fe–S cluster‐bound globular form and unbound rod‐like form. The globular clISCA1 protomer assembled to form columnar oligomers, which allowed for the binding of many Fe–S clusters at the interface between clISCA1 protomers. Moreover, the translational diffusion and the columnar oligomerization of clISCA1 were controlled by the external static magnetic field and Fe–S clusters bound to clISCA1. However, the columnar clISCA1 oligomer was not oriented along the external static magnetic field (~1 T) when clCRY4 was not bound to clISCA1. This result indicated that clCRY4 has a function to enhance the magnetic orientational property of clCRY4/clISCA1 oligomer.

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Section: Resultsmentioning

confidence: 99%