Three sequences in the vicinity of poly (A) addition sites are conserved among vertebrate mRNAs. We analyze the effects of single base changes in each position of AAUAAA and in the nucleotide to which poly (A) is added on 3' end formation in vitro. All 18 possible single base changes of the AAUAAA sequence greatly reduce addition of poly (A) to RNAs that end at the poly (A) addition site, and p...

tumor necrosis factor alpha-inducible protein 3 (tnfaip3) gene polymorphisms have been reported to be associated with the susceptibility to several immune-related diseases. here we investigated the effect of tnfaip3 gene polymorphisms on the risk of allergic rhinitis (ar) in a chinese han population. the case-control study included 540 ar patients and 524 healthy controls. genotyping for tnfaip...

ankylosing spondylitis (as) is an inflammatory arthritis, which affects mainly spine and sacroiliac joints. according to recent studies, erap1 is the second most common candidate gene for  as susceptibility after hla-b27. the  aim of this study was to  determine the association of erap1 gene polymorphisms with as in iranian population. the study group comprised 387 iranian as patients and 316 h...

background: coronary artery disease (cad) is a multifactorial and heterogenic disease. recently, genome-wide association studies have reported that rs1333040 (c/t) and rs1004638 (a/t) single nucleotide polymorphisms (snps) in the 9p21 locus have very strong association with cad. this study aimed to examine these associations in southwest of iran. methods: blood samples were collected from 200 c...

a single nucleotide polymorphism (snp) in cd24 has been associated with multiple sclerosis (ms) in a population based study. this snp results in the replacement of alanine (cd24a) by valine (cd24v) at amino acid 57 in the resulting polypeptide chain. in the current study, the genotyping of this snp and its contribution to ms in 217 patients and 200 healthy individuals of an iranian population w...

aim : leptin is a 16 kda polypeptide hormone which secreted by adipose tissue and has an important role in energy balance, insulin pathway and inflammation, because of that it may play an important role in colorectal cancer (crc). leptin exerts its effect through the leptin receptor (lepr) a member of the class i cytokine receptor family. background : we have investigated whether glutamine to a...

abstract background von willebrand disease (vwd) is an autosomally inherited bleeding disorder with the prevalence of 1% based on population studies. the disease phenotype is due to quantitative and structural/functional defects in von willebrand factor (vwf) which is a glycoprotein with essential role as a carrier of fviii in circulation and also it serves the function as hemostasis regulator....

A comparison of Arabidopsis DNA sequences revealed that the final nucleotides at the 3' end of approximately half of the Arabidopsis mRNAs, immediately upstream of the poly(A) tail, differ from the corresponding genomic sequences. This suggests that extra nucleotides were added to these mRNAs at their 3' termini prior to polyadenylation. Among the mRNAs containing additional nucleotides, approx...

urokinase might play a role in the formation of kidney stones. this study was done to determine the association between +4065 t/c polymorphism at the 3′-untranslated region of urokinase gene and calcium kidney stones. this case-control study was carried out on 70 cases with a history of calcium kidney stones and 70 controls from the baqiyatallah hospital of tehran in 2013. the study of polymorp...