hich of the following will give well annotated metabolic pathway miRbase blastdb KEGG Ensembl

Your question seems to be incomplete or not clear. However, I can provide information based on the keywords you mentioned:

1. miRBase: This is a searchable database of published miRNA sequences and annotation. It provides users with miRNA gene data from various species.

2. Blastdb: This is a software database of a protein or nucleotide sequence library that can be searched using the BLAST tool. It's used for sequence alignment and finding homologous genes.

3. KEGG: Kyoto Encyclopedia of Genes and Genomes (KEGG) is a database resource that integrates genomic, chemical and systemic functional information. It's particularly useful for mapping and analyzing metabolic pathways and functions of gene products in cells.

4. Ensembl: This is a genome database that provides annotations for a wide range of vertebrate and model organism genomes.

Among these, KEGG is the one that provides well annotated metabolic pathways. It allows users to visualize genes in the context of metabolic pathways, providing a comprehensive view of how different genes contribute to cellular metabolism.