께서 is an honorific version of 이/가 :
아버님께서는 무엇을 하세요?
What does your father do?
께 is an honorific version of 에게/한테:
할머님께 편지를 썼습니다.
I wrote Grandmother a letter.
examples from http://www.korean.arts.ubc.ca/b_tb/tb_13/L13-2-2.htm
Are there any other honorific particles, e.g. for 을/를, 에서, and so on? or are 께서 and 께 the only ones?