Table 1.

Examples of three types of term difference

Term difference	Annotation 1	Annotation 2
Text variant	cAMP-binding proteins - catabolite gene activator and regulatory subunit of cAMP-dependent protein kinases	putative cAMP-binding protein - catabolite protein activator and regulatory subunit of cAMP-dependent protein kinase
Synonym and abbreviation	RIP metalloprotease	Membrane-associated zinc metalloprotease
Functional expression variant	phosphoribosyl-ATP pyrophosphatase/phosphoribosyl-AMP cyclohydrolase	phosphoribosyl-ATP diphosphatase