webmd symptom checker helps you find the most common medical conditions indicated by the symptoms frequent urination itching or burning pain during erection and pain with sexual intercourse male including urinary tract infection uti diabetes type 2 and liceebmd symptom checker helps you find the most common medical conditions indicated by the symptoms frequent urination itching or burning pain during erection and pain with sexual intercourse male including urinary tract infection uti diabetes type 2 and lice
FMR1 (fragile X mental retardation 1) is a human gene that codes for a protein called fragile X mental retardation protein, or FMRP.This protein, most commonly found in the brain, is essential for normal cognitive development and female reproductive function.s a result, this part of the FMR1 gene is methylated, which silences the gene (it is turned off and does not make any protein). Without adequate FMRP, severe learning deficits or mental retardation can develop, along with physical abnormalities seen in fragile X syndrome.
In the DNA of E. coli, there is a fourth gene, the regulator gene, lacI. The regulator gene is under separate transcriptional control from the other three genes. lacI codes for a protein called a repressor.The repressor binds to a region just before the lacZ gene. mutant regulator gene (lacI -) produces a defective repressor that cannot bind to the operator. A mutant operator region (lacO c) is defective in that the repressor cannot bind and thus transcription cannot be shut off. Both types of mutants have the same constitutive phenotype.