SNAREs, soluble N-ethylmaleimide-sensitive factor-attachment protein receptors, are essential proteins for fusion of cellular membranes. SNAREs localized on opposing membranes assemble to form a trans-SNARE complex, an extended, parallel four alpha-helical bundle that drives membrane fusion. SNAP29 is a SNARE involved in autophagy through the direct control of autophagosome membrane fusion with the lysososome membrane. Also plays a role in ciliogenesis by regulating membrane fusions. Forms a SNARE complex, composed of VAMP8, SNAP29 and STX17, involved in fusion of autophagosome with lysosome (By similarity). Interacts with multiple syntaxins including STX6 (By similarity). Interacts with EIPR1 (By similarity). Interacts with STX17; this interaction is increased in the absence of TMEM39A (By similarity). Appears to be mostly membrane-bound, probably via interaction with syntaxins, but a significant portion is cytoplasmic. Localizes to the ciliary pocket from where the cilium protrudes. Belongs to the SNAP-25 family.