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Ovarian Kaleidoscope Database (OKdb)

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KRR1 small subunit processome component homolog OKDB#: 5268
 Symbols: KRR1 Species: human
 Synonyms: HRB2, RIP-1  Locus: 12q21.2 in Homo sapiens


For retrieval of Nucleotide and Amino Acid sequences please go to: OMIM Entrez Gene
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General Comment Dribble, the Drosophila KRR1p homologue, is involved in rRNA processing. Chan HY et al. (2001) The Drosophila dribble (dbe) gene encodes a KH domain protein, homologous to yeast KRR1p. Expression of dbe transcripts is ubiquitous during embryogenesis. Overexpressed Dribble protein is localized in the nucleus and in some cell types in a subregion of the nucleolus. Homozygous dbe mutants die at first instar larval stage. Clonal analyses suggest that dbe(+) is required for survival of dividing cells. In dbe mutants, a novel rRNA-processing defect is found and accumulation of an abnormal rRNA precursor is detected.////////////////// In yeast, Krr1 is a component of a ribonucleoprotein required for biogenesis of the 18S rRNA.

General function RNA binding
Comment
Cellular localization
Comment GWAS123//////////////Identifying susceptibility genes for primary ovarian insufficiency on the high-risk genetic background of a fragile X premutation. Trevino CE et al. (2021) To identify modifying genes that explains the risk of fragile X-associated primary ovarian insufficiency (FXPOI). Gene-based, case/control association study, followed by a functional screen of highly ranked genes using a Drosophila model. Participants were recruited from academic and clinical settings. Women with a premutation (PM) who experienced FXPOI at the age of 35 years or younger (n = 63) and women with a PM who experienced menopause at the age of 50 years or older (n = 51) provided clinical information and a deoxyribonucleic acid sample for whole genome sequencing. The functional screen was on the basis of Drosophila TRiP lines. Clinical information and a DNA sample were collected for whole genome sequencing. A polygenic risk score derived from common variants associated with natural age at menopause was calculated and associated with the risk of FXPOI. Genes associated with the risk of FXPOI were identified on the basis of the P-value from gene-based association test and an altered level of fecundity when knocked down in the Drosophila PM model. The polygenic risk score on the basis of common variants associated with natural age at menopause explained approximately 8% of the variance in the risk of FXPOI. Further, SUMO1 and KRR1 were identified as possible modifying genes associated with the risk of FXPOI on the basis of an untargeted gene analysis of rare variants. In addition to the large genetic effect of a PM on ovarian function, the additive effects of common variants associated with natural age at menopause and the effect of rare modifying variants appear to play a role in FXPOI risk.//////////////////
Ovarian function
Comment
Expression regulated by
Comment
Ovarian localization Oocyte
Comment
Follicle stages
Comment
Phenotypes PCO (polycystic ovarian syndrome)
POF (premature ovarian failure)
Mutations 1 mutations

Species: human
Mutation name:
type: naturally occurring
fertility: subfertile
Comment: Causal mechanisms and balancing selection inferred from genetic associations with polycystic ovary syndrome. Day FR et al. (2015) Polycystic ovary syndrome (PCOS) is the most common reproductive disorder in women, yet there is little consensus regarding its aetiology. Here we perform a genome-wide association study of PCOS in up to 5,184 self-reported cases of White European ancestry and 82,759 controls, with follow-up in a further ∼2,000 clinically validated cases and ∼100,000 controls. We identify six signals for PCOS at genome-wide statistical significance (P<5 × 10(-8)), in/near genes ERBB4/HER4, YAP1, THADA, FSHB, RAD50 and KRR1. Variants in/near three of the four epidermal growth factor receptor genes (ERBB2/HER2, ERBB3/HER3 and ERBB4/HER4) are associated with PCOS at or near genome-wide significance. Mendelian randomization analyses indicate causal roles in PCOS aetiology for higher BMI (P=2.5 × 10(-9)), higher insulin resistance (P=6 × 10(-4)) and lower serum sex hormone binding globulin concentrations (P=5 × 10(-4)). Furthermore, genetic susceptibility to later menopause is associated with higher PCOS risk (P=1.6 × 10(-8)) and PCOS-susceptibility alleles are associated with higher serum anti-Müllerian hormone concentrations in girls (P=8.9 × 10(-5)). This large-scale study implicates an aetiological role of the epidermal growth factor receptors, infers causal mechanisms relevant to clinical management and prevention, and suggests balancing selection mechanisms involved in PCOS risk.//////////////////

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Phenotypes and GWAS show phenotypes and GWAS
Links
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created: Oct. 12, 2015, 12:58 p.m. by: system   email:
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last update: May 22, 2021, 11:04 a.m. by: hsueh    email:



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