Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UNIPROT:P06889 (Mol)
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FMNL1, FMNL2, FMNL3, DAAM1, DAAM2, DIAPH1 and DIAPH2 constitute the Formin-homology subfamily with FDD, FH1 and FH2 domains. FMNL2 gene is linked to FNBP3 (also known as HYPA) gene on human chromosome 2q23.3, while FMNL3 gene to FNBP3L (also known as HYPC) gene on 12q13. Because human FNBP3 cDNA (NM_017892.2) was a 5'-truncated partial clone, we identified and characterized human FNBP3 gene by using bioinformatics. Human FNBP3 gene, consisting of 26 exons, was located within human genome sequences AC079344.5, AC012443.8, and human chromosome 2 genomic contig NT_005403.13. Nucleotide sequence of human FNBP3 cDNA was determined in silico by assembling nucleotide sequences of 26 exons of FNBP3 gene. HYPA cDNA and IMAGE cDNA clones 3356968, 4026200, 4733897 were 3'-truncated partial FNBP3 cDNAs, while FNBP3 (NM_017892.2), FLJ11559, NY-REN-6, and FLJ20585 were 5'-truncated partial FNBP3 cDNAs. Two FNBP3 isoforms with or without 126-bp region in the 3'-part of exon 1 were transcribed due to alternative splicing. FNBP3 isoform 2 without the 126-bp region was the major FNBP3 transcript. Two WW domains, two FF domains, two bipartite nuclear localization signals, FB3HM and FB3HC domains were conserved among vertebrate FNBP3 homologs, including human FNBP3, FNBP3L, mouse Fnbp3, Fnbp3l, chicken fnbp3 and zebrafish fnbp3. FNBP3, binding to TNFSF6 (Fas ligand), Huntingtin and Formin proteins, might transduce extracellular signals to the Rho-related signaling pathway. On the other hand, FNBP3 with nuclear localization signals and two tyrosine phosphorylation sites might transduce extracellular signals to the nucleus. This is the first report on comprehensive characterization of human FNBP3 gene.
Int J Mol Med 2003 Oct
PMID:Identification and characterization of human FNBP3 gene in silico. 1296 49

Formin homology proteins with FH1 and FH2 domains are signaling effectors for assembly and polarization of actin filaments. FH1 is the binding domain for Profilin, SRC, EMS1/Cortactin, FNBP1, FNBP2, FNBP3, FNBP4 and WBP4/Fbp21, while FH2 is the actin-filament modification domain. Here, we identified and characterized a novel member of Formin-homology gene family, Diaphanous homology 3 (DIAPH3), by using bioinformatics. DIAPH3 isoform 1, corresponding to 3'-truncated FLJ34705 cDNA and 5'-divergent IMAGE5265490 cDNA, encodes full-length DIAPH3 protein (1112 aa), while DIAPH3 isoform 2, identical to NM_030932.2 cDNA, encodes N-terminally truncated DIAPH3 protein (849 aa). DIAPH3 isoform 1, consisting of exons 1-27, was expressed in lymph node, erythroid progenitor cells as well as in pancreatic cancer. DIAPH3 isoform 2, consisting of exons 1b and 8-27, was expressed in testis. DIAPH3 gene at human chromosome 13q21.2 was found to encode two isoforms due to alternative splicing of the alternative promoter type. Full-length human DIAPH3 protein, consisting of FDD, FH1 and FH2 domains, showed 51.3% total-amino-acid identity with DIAPH1, and 57.3% total-amino-acid identity with DIAPH2. FMNL1/FMNL, FMNL2/FHOD2, FMNL3/WBP3, DAAM1, DAAM2, DIAPH1, DIAPH2 and DIAPH3 were classified as the FDD-type Formin homology proteins, while GRID2IP/Delphilin, FHOD1, Fmn1 and Fmn2 were classified as the non-FDD-type Formin homology proteins. This is the first report on identification and characterization of human DIAPH3 gene.
Int J Mol Med 2004 Mar
PMID:Identification and characterization of human DIAPH3 gene in silico. 1476 82

Mouse Formin (Fmn1) protein plays a key role in limb morphogenesis. Fmn1 is one of the actin regulators with scaffold function, interacting with Profilin, SRC, EMS1, FNBP1, FNBP2, FNBP3, FNBP4, WBP4 and alpha-catenin. Fmn1, Fmn2, FHOD1, FHOD3, GRID2IP and FHDC1 are non-FDD-type Formin homology proteins, while FMNL1, FMNL2, FMNL3, DIAPH1, DIAPH2, DIAPH3, DAAM1 and DAAM2 are FDD-type Formin homology proteins. Here, we identified the human FMN1 gene by using bioinformatics. The complete coding sequence of human FMN1 cDNA was determined by assembling AC055874.8 genome sequence (nucleotide position 178207-180073), AI040235 EST (complementary sequence for nucleotide position 331-156) and FLJ45135 cDNA (nucleotide position 319-3310). FMN1 isoform 1 (exons 1-18) and FMN isoform 2 (exons 1b and 3-18) were transcribed due to alternative splicing of the alternative promoter type. The FMN1 gene at human chromosome 15q13.3 was located between CKTSF1B1 (Gremlin) and RYR3 genes. The Xenopus fmn1 gene was identified within the Xenopus genome sequence CH216-24N20 (AC147835.1). The FMH1 domain (codon 1-120 of FMN1) and FMH2 domain (codon 683-835 of FMN1) were identified as novel regions conserved among human FMN1, mouse Fmn1, and Xenopus fmn1. The FMH2 domain was almost identical to the alpha-catenin binding domain of mouse Fmn1. Human FMN1 (1419 aa), showing 77.1% total amino-acid identity with mouse Fmn1, was found consisting of FMH1, FMH2, FH1 and FH2 domains. This is the first report on the identification and characterization of the human FMN1 gene as well as the FMH1 and FMH2 domains.
Int J Mol Med 2004 Jul
PMID:Identification and characterization of the human FMN1 gene in silico. 1520 26

Mouse Formin (Fmn1) is an actin regulator interacting with Profilin, SRC, EMS1, FNBP1, FNBP2, FNBP3, FNBP4, WBP4 and alpha-catenin. FMN1, FHOD1, FHOD3, GRID2IP and FHDC1 are non-FDD-type Formin homology proteins, while FMNL1, FMNL2, FMNL3, DIAPH1, DIAPH2, DIAPH3, DAAM1 and DAAM2 are FDD-type Formin homology proteins. Here, we characterized human FMN2 gene by using bioinformatics. Complete coding sequence of human FMN2 cDNA was determined by assembling AL359918, AL513342, AL590490, AL646016 genome sequences, AF218941 partial cDNA, and AF218942 partial cDNA. FMN2 mRNA was expressed in fetal brain, adult whole brain, hypothalamus, retina, pancreatic islet and germinal-center B cells. Among various human tumors, FMN2 mRNA was expressed in parathyloid tumor, glioblastoma, retinoblastoma and chondrosarcoma. Human FMN2 (1722 aa) showed 74.7% total-amino-acid identity with mouse Fmn2, and 31.9% total-amino-acid identity with human FMN1. Although N-terminal half was divergent between FMN2 orthologs and FMN1 orthologs, FH1 and FH2 domains were conserved among FMN2 and FMN1 orthologs. Exon-intron structure was conserved between FMN2 and FMN1 genes. RYR2-FMN2-CKTSF1B2 (PRDC) locus at human chromosome 1q43 and RYR3-FMN1-CKTSF1B1 (Gremlin) locus at human chromosome 15q13-q14 were paralogous regions (paralogons) within the human genome. This is the first report on comprehensive characterization of the human FMN2 gene.
Int J Mol Med 2004 Sep
PMID:Characterization of FMN2 gene at human chromosome 1q43. 1528 2