>cd04112 Rab26 Rab26 subfamily. First identified in rat pancreatic acinar cells, Rab26 is believed to play a role in recruiting mature granules to the plasma membrane upon beta-adrenergic stimulation. Rab26 belongs to the Rab functional group III, which are considered key regulators of intracellular vesicle transport during exocytosis. GTPase activating proteins (GAPs) interact with GTP-bound Rab and accelerate the hydrolysis of GTP to GDP. Guanine nucleotide exchange factors (GEFs) interact with GDP-bound Rabs to promote the formation of the GTP-bound state. Rabs are further regulated by guanine nucleotide dissociation inhibitors (GDIs), which facilitate Rab recycling by masking C-terminal lipid binding and promoting cytosolic localization. Most Rab GTPases contain a lipid modification site at the C-terminus, with sequence motifs CC, CXC, or CCX. Lipid binding is essential for membrane attachment, a key feature of most Rab proteins.

Probab=99.68 E-value=6.5e-17 Score=122.34 Aligned_cols=161 Identities=14% Similarity=0.161 Sum_probs=113.4 Q ss_pred EEEEECCCCCCCEEEEEECCCCCHHHHHHHCCCEECC--EEEEECC--EEEEEECCCCCCCCCCCCCCCHHHHHHHHHHH Q ss_conf 1244216777530354101454012121100000010--2663298--68998226421247311677512344333335 Q gi|254780648|r 162 IGIIGLPNAGKSTFLASVTRAKPKIADYPFTTLYPNL--GIVKEGY--KEFILADIPGIIKNAHQGAGIGDRFLKHTERT 237 (335) Q Consensus 162 VglVG~PNaGKSTLln~ls~ak~kIa~ypFTT~~P~l--Gvv~~~~--~~~~i~D~PGlIegA~~~~glG~~FLrhIer~ 237 (335) T Consensus 3 Iv~vGd~~VGKTsli~r~~~~~f~~~~~~-~Ti~~~~~~k~~~~~~~~v~l~iwDtaG~e----~~~~l~~~---~~~~a 74 (191) T cd04112 3 VMLLGDSGVGKTCLLVRFKDGAFLNGNFI-ATVGIDFRNKVVTVDGVKVKLQIWDTAGQE----RFRSVTHA---YYRDA 74 (191) T ss_pred EEEECCCCCCHHHHHHHHHHCCCCCCCCC-CCCCEEEEEEEEEECCEEEEEEEEECCCCC----CCCCCHHH---HHHCC T ss_conf 99999499879999999995978999867-765247799999999999999999799863----34646477---71177 Q ss_pred HHHHHHCCCCCCCHHHHHHHHHHHHHHHHHHHCCCCEEEEEECCCCCCHHHH-HHHHHHHHHHCCCCEEEEECCCCCCHH Q ss_conf 7887520222211013466678998777667505988999974658998899-999999998629948999888788999 Q gi|254780648|r 238 HVLLHIVSALEENVQAAYQCILDELSAYNSELRKKIEIVGLSQIDTVDSDTL-ARKKNELATQCGQVPFEFSSITGHGIP 316 (335) Q Consensus 238 ~vLl~VVD~s~~d~~~~~~~I~~EL~~y~~~L~~Kp~IIVlNKiDl~~~e~~-~~~~~~l~~~~~~~vi~ISA~tg~GI~ 316 (335) T Consensus 75 ~~~ilvydit~~~Sf~~l~~w~~~i~~~~~--~~~~iilVGNK~DL~~~r~V~~~e~~~~a~~~~~~f~EtSAkt~~nI~ 152 (191) T cd04112 75 HALLLLYDITNKASFDNIRAWLTEIKEYAQ--EDVVIMLLGNKADMSGERVVKREDGERLAKEYGVPFMETSAKTGLNVE 152 (191) T ss_pred CEEEEEEECCCHHHHHHHHHHHHHHHHHCC--CCCEEEEECCCCCCCCCCCCCHHHHHHHHHHCCCEEEEECCCCCCCHH T ss_conf 778999727988999999999999998666--785389861246553026799999999999829979998548980979 Q ss_pred HHHHHHHHHHHHHHHH Q ss_conf 9999999999854523 Q gi|254780648|r 317 QILECLHDKIFSIRGE 332 (335) Q Consensus 317 eL~~~I~e~L~~~r~e 332 (335) T Consensus 153 e~F~~i~~~i~~~~~~ 168 (191) T cd04112 153 LAFTAVAKELKHRKYE 168 (191) T ss_pred HHHHHHHHHHHHHCCC T ss_conf 9999999999874227

HHsearch alignment for GI: 254780648 and conserved domain: cd04112