Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_26708105_5 (protein_name VARCHAR, aa_length VARCHAR)

### Question ###
What is the protein name when aa length is 202 aa?

### Accurate SQL ###

SELECT protein_name FROM table_26708105_5 WHERE aa_length = "202 aa"