Update protein_database.md

TeachingMaterials/protein_database.md

@@ -17,25 +17,42 @@ Protein records are available mainly in text formats that include sequence entri
 #### 1. [National Center for Biotechnology Information - NCBI](https://www.ncbi.nlm.nih.gov/)
 
 The NCBI interface
-    ###### Example proteins: 
-    * Tumor protein P53
+
+###### Example proteins:
     
-    Human protein P53 is a tumor suppressor protein, the absence of which allows many cancers to proliferate.
+* **Tumor protein P53**: a tumor suppressor protein in human, the absence of which allows many cancers to proliferate.
     
-    ###### Search method:
-    * Text/term search in [All fields] (simply type in your query)
-    * Limiting the search using [filters]
-        - Organism [ORGN]
-        - Source database
-        - Genetic component
-        - Bio-chemical/physical properties etc.
-    * Combining multiple search criteria by boolean AND, OR, NOT
-    * Browsing by taxonomy (right side of the screen)
+###### Search method:
     
-    ###### Select ine record of your choice
-    * 
-        
-
+* Text/term search in [All fields] (simply type in your query)
+* Limiting the search using [filters]
+    - Organism [ORGN]
+    - Source database
+    - Genetic component
+    - Bio-chemical/physical properties etc.
+* Combining multiple search criteria by boolean AND, OR, NOT
+* Browsing by taxonomy (right side of the screen)
+    
+###### Select one record of your choice
+    
+* Browse the GenPept entry
+    - Identical proteins
+    - FASTA entry
+    - Graphical representation of the features
+    - Other linked data
+        - Articles
+        - Pathways
+        - Reference sequences
+        - Homologs
+        - Related information
+        - Link-outs
+    - Analysis options (we will explore these later)
+        - BLAST
+        - Domains
+        - Sequence features
+        - Regular expression
+        - Tertiary structure
+        - Multiple alignment by COBALT
 
 #### 2. [UniProt Knowledgebase](https://www.ebi.ac.uk/uniprot)
 - Swissprot and Trembl