diff --git a/Project.toml b/Project.toml
index b7df673..3e92809 100644
--- a/Project.toml
+++ b/Project.toml
@@ -4,9 +4,7 @@ authors = ["Anton Oresten"]
 version = "0.0.1"
 
 [deps]
-AssigningSecondaryStructure = "8ed43e74-60fb-4e11-99b9-91deed37aef7"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
-PDBTools = "e29189f1-7114-4dbd-93d0-c5673a921a58"
 
 [compat]
 julia = "1"
diff --git a/src/BackBoner.jl b/src/BackBoner.jl
index bde92af..4f80a48 100644
--- a/src/BackBoner.jl
+++ b/src/BackBoner.jl
@@ -2,8 +2,7 @@ module BackBoner
 
 using LinearAlgebra
 
-import AssigningSecondaryStructure as ASS
-export ASS
+export BackBone
 
 include("backbone.jl")
 include("oxygen.jl")
diff --git a/src/backbone.jl b/src/backbone.jl
index fd44307..ba762e1 100644
--- a/src/backbone.jl
+++ b/src/backbone.jl
@@ -1,3 +1,5 @@
+export BackBone, atom_coord_matrix
+
 """
     Backbone{A, T}
 
diff --git a/src/ncaco.jl b/src/ncaco.jl
index ff7d634..abdded4 100644
--- a/src/ncaco.jl
+++ b/src/ncaco.jl
@@ -1,3 +1,5 @@
+export nitrogen_coord_matrix, alphacarbon_coord_matrix, carbon_coord_matrix, oxygen_coord_matrix
+
 nitrogen_coord_matrix(bb::Backbone) = atom_coord_matrix(bb, 1)
 alphacarbon_coord_matrix(bb::Backbone) = atom_coord_matrix(bb, 2)
 carbon_coord_matrix(bb::Backbone) = atom_coord_matrix(bb, 3)