>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=99.50 E-value=1.8e-13 Score=113.25 Aligned_cols=137 Identities=22% Similarity=0.303 Sum_probs=95.2 Q ss_pred CCEEEECCCCCCHHHHHHHHHCCHHCCCCCCCCCC-EEECCCCCCCCC--EEEEEEECCHHCCCCHHHHHHHHHHHHHHH Q ss_conf 30243114663188899998552000234546872-110001245683--589995081000241035666678889985 Q gi|254780809|r 220 YKIVILGHSNAGKSSLFNALAKKDVAIVTDIPGTT-RDVLTIDLDLEG--YLVKISDTAGIRETDDIVEKEGIKRTFLEV 296 (440) Q Consensus 220 ~~v~i~G~pN~GKSSL~N~L~~~~~aIVs~~~GTT-RD~i~~~~~i~g--~~~~l~DTaGir~t~d~IE~~GI~ra~~~i 296 (440) T Consensus 1 ~KIv~vGd~~VGKTsli~r~~~~~f-~~~~~~~Ti~~~~~~k~~~~~~~~v~l~iwDtaG~e~~~~--------l~~~~~ 71 (191) T cd04112 1 FKVMLLGDSGVGKTCLLVRFKDGAF-LNGNFIATVGIDFRNKVVTVDGVKVKLQIWDTAGQERFRS--------VTHAYY 71 (191) T ss_pred CEEEEECCCCCCHHHHHHHHHHCCC-CCCCCCCCCCEEEEEEEEEECCEEEEEEEEECCCCCCCCC--------CHHHHH T ss_conf 9899999499879999999995978-9998677652477999999999999999997998633464--------647771 Q ss_pred HHHCCEEECCCCCCHHHHHH------------HCCCCCCCCCCCCCCCCCCCHH-------------HHHHHHHHHHHHH Q ss_conf 03011020135898566343------------1289853222233344654200-------------0001333323235 Q gi|254780809|r 297 ENADLILLLKEINSKKEISF------------PKNIDFIFIGTKSDLYSTYTEE-------------YDHLISSFTGEGL 351 (440) Q Consensus 297 ~~aDlil~v~D~~~~~~~~~------------~~~~~~i~V~NK~Dl~~~~~~~-------------~~~~ISaktg~Gi 351 (440) T Consensus 72 ~~a~~~ilvydit~~~Sf~~l~~w~~~i~~~~~~~~~iilVGNK~DL~~~r~V~~~e~~~~a~~~~~~f~EtSAkt~~nI 151 (191) T cd04112 72 RDAHALLLLYDITNKASFDNIRAWLTEIKEYAQEDVVIMLLGNKADMSGERVVKREDGERLAKEYGVPFMETSAKTGLNV 151 (191) T ss_pred HCCCEEEEEEECCCHHHHHHHHHHHHHHHHHCCCCCEEEEECCCCCCCCCCCCCHHHHHHHHHHCCCEEEEECCCCCCCH T ss_conf 17777899972798899999999999999866678538986124655302679999999999982997999854898097 Q ss_pred HHHHHHHHHHHHHH Q ss_conf 89999999996322 Q gi|254780809|r 352 EELINKIKSILSNK 365 (440) Q Consensus 352 ~~L~~~I~~~l~~~ 365 (440) T Consensus 152 ~e~F~~i~~~i~~~ 165 (191) T cd04112 152 ELAFTAVAKELKHR 165 (191) T ss_pred HHHHHHHHHHHHHH T ss_conf 99999999999874

HHsearch alignment for GI: 254780809 and conserved domain: cd04112