What unusual quality do the following words share?

TARTS
EARN
TARES
CAMPERS
ELATING

HINT:
It has to do with moving letters.

Answer:

Making the last letter of each word the first letter creates a new word:

TARTS - START
EARN - NEAR
TARES - STARE
CAMPERS - SCAMPER
ELATING - GELATIN

Note: See also Word Puzzles - 8/25/12