SHOC1

Last update 08 May 2025

Basic Info

Synonyms

C9orf84, FLJ32779, MZIP2

+ [5]

Introduction

ATPase required during meiosis for the formation of crossover recombination intermediates (By similarity). Binds DNA: preferentially binds to single-stranded DNA and DNA branched structures (PubMed:29742103). Does not show nuclease activity in vitro, but shows ATPase activity, which is stimulated by the presence of single-stranded DNA (PubMed:29742103). Plays a key role in homologous recombination and crossing-over in meiotic prophase I in male and female germ cells (By similarity). Required for proper synaptonemal complex assembly and homologous chromosome pairing (By similarity). Requiref for recruitment TEX11 and MSH4 to recombination intermediates (By similarity).

100 Clinical Results associated with SHOC1

100 Translational Medicine associated with SHOC1

0 Patents (Medical) associated with SHOC1

Literatures (Medical) associated with SHOC1

18 Jun 2024·Proceedings of the National Academy of Sciences

RNF212B E3 ligase is essential for crossover designation and maturation during male and female meiosis in the mouse

Article

Author: Hendriks, Ivo A ; Condezo, Yazmine B ; Barbero, Jose Luis ; Sainz-Urruela, Raquel ; Pendas, Alberto M ; Gomez-H, Laura ; Cohen, Paula E ; Felipe-Medina, Natalia ; Gonzalez-Prieto, Román ; Wolff, Ian D ; Tanis, Stephanie ; Bradley, Rachel ; de Rooij, Dirk ; Salas-Lloret, Daniel ; Llano, Elena ; Sánchez-Martín, Manuel ; Nielsen, Michael L

Meiosis, a reductional cell division, relies on precise initiation, maturation, and resolution of crossovers (COs) during prophase I to ensure the accurate segregation of homologous chromosomes during metaphase I. This process is regulated by the interplay of RING-E3 ligases such as RNF212 and HEI10 in mammals. In this study, we functionally characterized a recently identified RING-E3 ligase, RNF212B. RNF212B colocalizes and interacts with RNF212, forming foci along chromosomes from zygonema onward in a synapsis-dependent and DSB-independent manner. These consolidate into larger foci at maturing COs, colocalizing with HEI10, CNTD1, and MLH1 by late pachynema. Genetically, RNF212B foci formation depends on Rnf212 but not on Msh4 , Hei10, and Cntd1 , while the unloading of RNF212B at the end of pachynema is dependent on Hei10 and Cntd1 . Mice lacking RNF212B, or expressing an inactive RNF212B protein, exhibit modest synapsis defects, a reduction in the localization of pro-CO factors (MSH4, TEX11, RPA, MZIP2) and absence of late CO-intermediates (MLH1). This loss of most COs by diakinesis results in mostly univalent chromosomes. Double mutants for Rnf212b and Rnf212 exhibit an identical phenotype to that of Rnf212b single mutants, while double heterozygous demonstrate a dosage-dependent reduction in CO number, indicating a functional interplay between paralogs. SUMOylome analysis of testes from Rnf212b mutants and pull-down analysis of Sumo- and Ubiquitin-tagged HeLa cells, suggest that RNF212B is an E3-ligase with Ubiquitin activity, serving as a crucial factor for CO maturation. Thus, RNF212 and RNF212B play vital, yet overlapping roles, in ensuring CO homeostasis through their distinct E3 ligase activities.

01 Nov 2023·The Plant journal : for cell and molecular biology

FANCM interacts with the MHF1‐MHF2 complex to limit crossover frequency during rice meiosis

Article

Author: Miao, Yongjie ; Mu, Na ; Zhou, Yue ; Tang, Ding ; Wang, Bingxin ; Li, Yafei ; Shen, Yi ; Cheng, Zhukuan

Crossovers (COs) are necessary for generating genetic diversity that breeders can select, but there are conserved mechanisms that regulate their frequency and distribution. Increasing CO frequency may raise the efficiency of selection by increasing the chance of integrating more desirable traits. In this study, we characterize rice FANCM and explore its functions in meiotic CO control. FANCM mutations do not affect fertility in rice, but they cause a great boost in the overall frequency of COs in both inbred and hybrid rice, according to genetic analysis of the complete set of fancm zmm (hei10, ptd, shoc1, mer3, zip4, msh4, msh5, and heip1) mutants. Although the early homologous recombination events proceed normally in fancm, the meiotic extra COs are not marked with HEI10 and require MUS81 resolvase for resolution. FANCM depends on PAIR1, COM1, DMC1, and HUS1 to perform its functions. Simultaneous disruption of FANCM and MEICA1 synergistically increases CO frequency, but it is accompanied by nonhomologous chromosome associations and fragmentations. FANCM interacts with the MHF complex, and ablation of rice MHF1 or MHF2 could restore the formation of 12 bivalents in the absence of the ZMM gene ZIP4. Our data indicate that unleashing meiotic COs by mutating any member of the FANCM-MHF complex could be an effective procedure to accelerate the efficiency of rice breeding.

01 Oct 2023·Clinical genetics

Pathogenic bi-allelic variants of meiotic ZMM complex gene SPO16 in premature ovarian insufficiency.

Article

Author: Guo, Ting ; Li, Shan ; Qi, Yu ; Zhuang, Shuning ; Qin, Yingying ; Xu, Keyan ; Wang, Yiyang ; Li, Weilin

Premature ovarian insufficiency (POI) is a heterogeneous disease affecting the physical and mental health of millions of women worldwide. The contribution of genetic factors in the pathogenesis of POI has increased, with quite a few of causative genes involved in meiosis. ZMM proteins are a group of conserved proteins participating in meiotic synapsis and crossover maturation. Here, by screening the variations of ZMM genes in our in-house WES database of 1030 idiopathic POI patients, one novel homozygous variation in SPO16 (c.160 + 8A > G) was firstly identified in one patient. The variation was verified to disturb mRNA splicing by minigene assay, produced a non-functional SPO16 protein, and was classified as pathogenetic according to American College of Medical Genetics guideline. During meiotic prophase I, SHOC1 binds to branched DNA and recruits SPO16 and other ZMM proteins to facilitate crossover formation. Together with our recent identified bi-allelic variations of SHOC1 in a published work, this study highlighted the essential roles of ZMM genes in the maintenance of ovarian function and expanded the POI gene spectrum.

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SHOC1

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