Table I. Antibodies used in the study.

Protein	Antibody	Typea	Reference/Source
IFT particle proteins
Complex A
IFT139	139.1	M	Cole et al., 1998
Complex B
IFT 172	172.1	M	Cole et al., 1998
IFT81	81.1–4 (pooled)	M	Cole et al., 1998
IFT57	57.1	M	Cole et al., 1998
FT52	α-IFT52	P	Deane et al., 2001
IFT74/72	α-IFT721, α-IFT722	P	This paper
Kinesin II motor
FLA10 neck	α-FLA10N	P	Cole et al., 1998
FLA10 tail	α-FLA10T	P	Kozminski et al., 1995
Cytoplasmic dynein heavy chain
DHC1b	α-DHC1b	P	Pazour et al., 1999
Outer arm dynein
Intermediate chain
IC69	α-IC69	M	Sigma-Aldrich
Docking complex
DC83	α-DC83	P	Wakabayashi et al., 2001
Light chain
LC1	α-LC1	P	Benashski et al., 1999
LC2	α-LC2	P	Patel-King et al., 1997
Inner arm dynein
Light chain
Tctex-1	α-Tctex-1	P	Harrison et al., 1998
Intermediate chain
IC140	α-IC140		Yang and Sale, 1998
RSPs
RSP1	α-RSP1	P	Williams et al., 1986
RSP3	α-RSP3	P	Williams et al., 1989
Tubulin
Acetylated α-tubulin		M	Sigma-Aldrich
β-Tubulin		P	Silflow and Rosenbaum, 1981
Flagellar membrane glycoprotein
FMG-1	α-FMG-1	M	Bloodgood et al., 1986
Hemagglutinin epitope	12CA5	M	Field et al., 1988
Ovalbumin	α-Ovalbumin	M	Sigma-Aldrich

^aM, monoclonal; P, polyclonal.