What is the lowest number of genes in Rubrobacter Xylanophilus?
CREATE TABLE table_54520 (
    "Species" text,
    "Strain" text,
    "Type" text,
    "Base Pairs" real,
    "Genes" real
)
SELECT MIN("Genes") FROM table_54520 WHERE "Species" = 'rubrobacter xylanophilus'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What is the lowest number of genes in Rubrobacter Xylanophilus? ### Input: CREATE TABLE table_54520 (
    "Species" text,
    "Strain" text,
    "Type" text,
    "Base Pairs" real,
    "Genes" real
) ### Response: SELECT MIN("Genes") FROM table_54520 WHERE "Species" = 'rubrobacter xylanophilus'