CLCF1

Cardiotrophin-like cytokine factor 1 (CLCF1), also known as Novel Neurotrophin-1 (NNT-1) or B cell-stimulating factor-3 (BSF-3), is a protein that in humans is encoded by the CLCF1 gene.^[5]

CLCF1
Identifiers
Aliases	CLCF1, BSF-3, BSF3, CISS2, CLC, NNT-1, NNT1, NR6, cardiotrophin-like cytokine factor 1, cardiotrophin like cytokine factor 1
External IDs	OMIM: 607672; MGI: 1930088; HomoloGene: 8299; GeneCards: CLCF1; OMA:CLCF1 - orthologs
Gene location (Human) Chr. Chromosome 11 (human)[1] Band 11q13.2 Start 67,364,168 bp[1] End 67,374,177 bp[1]
Gene location (Mouse) Chr. Chromosome 19 (mouse)[2] Band 19|19 A Start 4,264,292 bp[2] End 4,273,544 bp[2]
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in left uterine tube testicle body of uterus gallbladder cartilage tissue gastric mucosa granulocyte canal of the cervix right uterine tube stromal cell of endometrium Top expressed in spleen bone marrow adrenal gland islet of Langerhans embryo embryo thymus lip urinary bladder epiblast More reference expression data BioGPS More reference expression data
Gene ontology Molecular function cytokine activity protein binding protein heterodimerization activity ciliary neurotrophic factor receptor binding growth factor activity signaling receptor binding Cellular component CNTFR-CLCF1 complex CRLF-CLCF1 complex extracellular region intracellular anatomical structure extracellular space Biological process negative regulation of neuron apoptotic process positive regulation of isotype switching to IgE isotypes receptor signaling pathway via JAK-STAT positive regulation of astrocyte differentiation positive regulation of immunoglobulin production cell surface receptor signaling pathway positive regulation of B cell proliferation positive regulation of cell population proliferation B cell differentiation positive regulation of tyrosine phosphorylation of STAT protein regulation of signaling receptor activity cytokine-mediated signaling pathway Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 23529 56708 Ensembl ENSG00000175505 ENSMUSG00000040663 UniProt Q9UBD9 Q9QZM3 RefSeq (mRNA) NM_013246 NM_001166212 NM_019952 NM_001310038 NM_001310039 RefSeq (protein) NP_001159684 NP_037378 NP_001296967 NP_001296968 NP_064336 Location (UCSC) Chr 11: 67.36 – 67.37 Mb Chr 19: 4.26 – 4.27 Mb PubMed search [3] [4]
Wikidata
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Function

CLCF1 is a cytokine. It induces tyrosine phosphorylation of the IL-6 receptor common subunit glycoprotein 130 (gp130), leukemia inhibitory factor receptor beta, and the transcription factor STAT3. It has been implicated in the induction of IL-1 (via induction of corticosterone and IL-6) and serum amyloid A, and in B cell hyperplasia. CLCF1 is capable of B cell activation via gp130 receptor stimulation.^[6]

Structure

CLCF1 is a cytokine belonging to the interleukin-6 (IL6) family. It is a secreted protein, found predominantly in lymph nodes and spleen, and contains 225 amino acids with a molecular mass of 22 kDa in its mature form. IL6 family members share similarity in gene structure and have a 4-helix bundle in their protein structure. CLCF1 is closely related to other proteins called cardiotrophin-1 and ciliary neurotrophic factor.