Conversor de DNA para mRNA
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
A→U, T→A, G→C, C→G
About this calculator
This calculator converts a DNA template strand (antisense strand) into its corresponding mRNA sequence, following base pairing rules: adenine (A) becomes uracil (U), thymine (T) becomes adenine (A), guanine (G) becomes cytosine (C), and cytosine (C) becomes guanine (G). Transcription is a fundamental step in gene expression, where genetic information is copied from DNA to mRNA, which will later be translated into protein.
It works simply: you enter the DNA template sequence (only letters A, T, G, C) and the tool automatically generates the mRNA sequence. The conversion replaces each base with its complement, remembering that in RNA thymine is replaced by uracil. The result can be copied or used directly in genetics, molecular biology, or bioinformatics studies.
Use this tool in situations such as: gene analysis, primer design for PCR, mutation studies, in vitro transcription simulation, or to verify if a DNA sequence correctly encodes a protein. It is useful for students, researchers, and professionals who need a quick and error-free conversion.
Important considerations: the input sequence must be the template strand (antisense), not the coding strand. Ensure there are no invalid characters (spaces, numbers, other letters). The tool does not validate if the sequence is biological, so double-check your input. Also, remember that real transcription involves complex cellular processes like splicing, which are not simulated here.
Frequently asked questions
What is the difference between template strand and coding strand?
The template strand (antisense) serves as the model for transcription, while the coding strand (sense) has the same sequence as mRNA (with T replaced by U). This calculator uses the template strand.
Can I enter lowercase letters or spaces?
The tool only accepts uppercase letters A, T, G, C without spaces. Enter the sequence continuously, without special characters.
What if my sequence has invalid characters?
Remove or correct any characters that are not A, T, G, or C. The tool may ignore or generate an error depending on implementation; we recommend cleaning the input.
Does this conversion consider introns and exons?
No. The tool only performs linear transcription of the provided sequence. Processing like splicing is not simulated.
Can I use the result to translate into protein?
Yes, the generated mRNA can be used as input in an mRNA-to-protein translator, respecting the genetic code.