CREB3L1

Highest pathogenic variant AF is 0.000006570993

Gene type

protein_coding

Transcript type

protein_coding

Transcript

ENST00000529193

Coding exons

12

Length

43761

Individuals with no LoFs

124639

Homozygous LoFs

0

Heterozygous LoFs

6

Defined

124645

p

0.0000241

Function

FUNCTION: Transcription factor involved in unfolded protein response (UPR). Binds the DNA consensus sequence 5'-GTGXGCXGC-3' (PubMed:21767813). In the absence of endoplasmic reticulum (ER) stress, inserted into ER membranes, with N-terminal DNA-binding and transcription activation domains oriented toward the cytosolic face of the membrane. In response to ER stress, transported to the Golgi, where it is cleaved in a site-specific manner by resident proteases S1P/MBTPS1 and S2P/MBTPS2. The released N-terminal cytosolic domain is translocated to the nucleus to effect transcription of specific target genes. Plays a critical role in bone formation through the transcription of COL1A1, and possibly COL1A2, and the secretion of bone matrix proteins. Directly binds to the UPR element (UPRE)-like sequence in an osteoblast-specific COL1A1 promoter region and induces its transcription. Does not regulate COL1A1 in other tissues, such as skin (By similarity). Required to protect astrocytes from ER stress-induced cell death. In astrocytes, binds to the cAMP response element (CRE) of the BiP/HSPA5 promoter and participate in its transcriptional activation (By similarity). Required for TGFB1 to activate genes involved in the assembly of collagen extracellular matrix (PubMed:25310401). {ECO:0000250|UniProtKB:Q9Z125, ECO:0000269|PubMed:12054625, ECO:0000269|PubMed:21767813, ECO:0000269|PubMed:25310401}.;

Disease

DISEASE: Osteogenesis imperfecta 16 (OI16) [MIM:616229]: An autosomal recessive form of osteogenesis imperfecta, a connective tissue disorder characterized by low bone mass, bone fragility and susceptibility to fractures after minimal trauma. Disease severity ranges from very mild forms without fractures to intrauterine fractures and perinatal lethality. Extraskeletal manifestations, which affect a variable number of patients, are dentinogenesis imperfecta, hearing loss, and blue sclerae. OI16 is a severe form. {ECO:0000269|PubMed:24079343}. Note=The disease may be caused by mutations affecting the gene represented in this entry. OI16 affected patients show a genomic deletion encompassing CREB3L1 and the first exon of DGKZ. The absence of this exon does not affect all DGKZ isoforms, some are still produced at normal level. It cannot be ruled out that DGKZ could contribute to the phenotype, but in view of its role in bone formation, CREB3L1 is a strong OI16-causing candidate (PubMed:24079343). This hypothesis is corroborated by the observation of CREB3L1 knockout mice which exhibit features reminiscent of severe human osteogenesis imperfecta. {ECO:0000269|PubMed:24079343}.;