diff --git a/backend/data/pdbAlphaFold/README.md b/backend/data/pdbAlphaFold/README.md
new file mode 100644
index 00000000..7147d6cb
--- /dev/null
+++ b/backend/data/pdbAlphaFold/README.md
@@ -0,0 +1,3 @@
+# PDB Alpha Fold
+
+File to store the pdb files referenced from the db.
\ No newline at end of file
diff --git a/backend/init.sql b/backend/init.sql
index 99d3a52b..f3fd1e09 100644
--- a/backend/init.sql
+++ b/backend/init.sql
@@ -11,9 +11,9 @@ CREATE TABLE proteins (
     -- todo: make the id meaningful, like Lb17_comp535_c2_seq1, discuss this
     id integer GENERATED ALWAYS AS IDENTITY PRIMARY KEY,  -- increment id for now
     name text NOT NULL UNIQUE
-    -- TODO: filePDBAlphaFold
-    -- TODO: length
-    -- TODO: mass 
+    -- TODO: filePDBAlphaFold (string)
+    -- TODO: length (int)
+    -- TODO: mass (float)
 );
 
 -- Some inserted values for now