Translates a single identifier from one attribute type to another.
This function allows conversion between different identifier types, such as
converting a gene symbol to an Ensembl ID. Results are cached to improve performance.
Args:
mart (str): The mart identifier (e.g., "ENSEMBL_MART_ENSEMBL")
dataset (str): The dataset identifier (e.g., "hsapiens_gene_ensembl")
from_attr (str): The source attribute name (e.g., "hgnc_symbol")
to_attr (str): The target attribute name (e.g., "ensembl_gene_id")
target (str): The identifier value to translate (e.g., "TP53")
Returns:
str: The translated identifier, or an error message if not found.
Example:
get_translation("ENSEMBL_MART_ENSEMBL", "hsapiens_gene_ensembl", "hgnc_symbol", "ensembl_gene_id", "TP53")
>>> "ENSG00000141510"