Results 81 to 90 of about 5,815 (206)

Human sperm chromatin epigenetic potential: genomics, proteomics, and male infertility

open access: yesAsian Journal of Andrology, 2015
The classical idea about the function of the mammalian sperm chromatin is that it serves to transmit a highly protected and transcriptionally inactive paternal genome, largely condensed by protamines, to the next generation.
Judit Castillo   +3 more
doaj   +1 more source

Increased expression of KPNA2 predicts unfavorable prognosis in ovarian cancer patients, possibly by targeting KIF4A signaling

open access: yesJournal of Ovarian Research, 2021
Background Karyopherin α-2 (KPNA2) is a member of karyopherin family, which is proved to be responsible for the import or export of cargo proteins. Studies have determined that KPNA2 is associated with the development and prognosis of various cancers ...
Xiangrong Cui   +4 more
doaj   +1 more source

New insights into the regulation of cholesterol efflux from the sperm membrane

open access: yesAsian Journal of Andrology, 2015
Cholesterol is an essential component of the mammalian plasma membrane because it promotes membrane stability without comprising membrane fluidity. Given this important cellular role, cholesterol levels are tightly controlled at multiple levels.
Tamara Leahy, Bart M Gadella
doaj   +1 more source

Take your mother’s ferry: preimplantation embryo development requires maternal karyopherins for nuclear transport

open access: yesThe Journal of Clinical Investigation, 2023
The genetic basis of preimplantation embryo arrest is slowly being unraveled. Recent discoveries point to maternally expressed proteins required for cellular functions before the embryonic genome is activated. In this issue of the JCI, Wang, Miyamoto, et
Momal Sharif   +2 more
doaj   +1 more source

Identification of a karyopherin alpha 2 recognition site in PLAG1, which functions as a nuclear localization signal.

open access: yes, 2002
peer reviewedThe activation of the pleomorphic adenoma gene 1 (PLAG1) is the most frequent gain-of-function mutation found in pleomorphic adenomas of the salivary glands.
Braem, Caroline V   +11 more
core   +1 more source

A 3D Physical Model of Karyopherin‐β2

open access: yesThe FASEB Journal, 2012
Karyopherin beta 2 (Kapβ2) is an importin that transports various cargo proteins into the nucleus through interactions with nucleoporins, which are proteins of the nuclear pore complex (NPC). One might overlook the significance of this protein but it actually plays a crucial role in the human body.
Mary Acheampong   +12 more
openaire   +1 more source

Previously identified protein of uncertain function is karyopherin alpha and together with karyopherin beta docks import substrate at nuclear pore complexes. [PDF]

open access: yesProceedings of the National Academy of Sciences, 1995
Previously, we had purified a cytosolic protein complex, termed karyopherin, that functions in docking import substrate at the nuclear envelope in digitonin-permeabilized cells and also had molecularly cloned and sequenced its 97-kDa beta subunit. We now report that the karyopherin alpha subunit is the previously identified protein NPI-1/SRP-1 of ...
J, Moroianu, G, Blobel, A, Radu
openaire   +2 more sources

Nuclear Transport of Yeast Proteasomes

open access: yesFrontiers in Molecular Biosciences, 2019
Proteasomes are key proteases in regulating protein homeostasis. Their holo-enzymes are composed of 40 different subunits which are arranged in a proteolytic core (CP) flanked by one to two regulatory particles (RP).
Petra Wendler, Cordula Enenkel
doaj   +1 more source

Structural Insights Into the Nuclear Import of Marek’s Disease Virus Large Tegument Protein

open access: yesAdvances in Virology, Volume 2026, Issue 1, 2026.
Marek’s disease (MD) is a highly contagious neoplastic disorder of poultry caused by MD virus (MDV; gallid alphaherpesvirus 2 [GaAHV2]). Infection results in profound immunosuppression, neurological dysfunction, and the development of malignant T‐cell lymphomas.
Babu Kanti Nath   +7 more
wiley   +1 more source

Structure and expression of Xenopus karyopherin-beta 3: definition of a novel synexpression group related to ribosome biogenesis

open access: yes, 2000
Karyopherin-beta 3 is a nuclear transport receptor that appears to be involved in nuclear import of ribosomal proteins. Here we report on sequence and expression of karyopherin-beta 3 in Xenopus.
Chen, Y. L.   +4 more
core   +1 more source

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