>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=99.53 E-value=4.3e-14 Score=100.18 Aligned_cols=157 Identities=15% Similarity=0.158 Sum_probs=86.1 Q ss_pred EEEEECCCCCCHHHHHHHHHCCCCEEEECCCCCEEEECCEEEEEEEEEEEECCCEEEEEECCHHHHHHHHHHHHHHHHHH Q ss_conf 89997489988989999973897379873888414521202665556785089649999760010111224478988889 Q gi|254780484|r 31 EIAFSGRSNVGKSSLINILVNRKNLARTSNAPGRTQHLNFFVPKDFSNLKNNLPAMALVDMPGYGYARAPKKNVDSWGGL 110 (212) Q Consensus 31 ~VaivG~~NvGKSSLiNaL~g~~~~a~~~~~p~tt~~~~~~~~~~~~~~~~~~~~~~~~DtpG~~~~~~~~~~~~~~~~~ 110 (212) T Consensus 2 KIv~vGd~~VGKTsli~r~~~~~f~~-~~~~~Ti~~~----~~~k~~~~~~~~v~l~iwDtaG~e~~~~l~~~~~----- 71 (191) T cd04112 2 KVMLLGDSGVGKTCLLVRFKDGAFLN-GNFIATVGID----FRNKVVTVDGVKVKLQIWDTAGQERFRSVTHAYY----- 71 (191) T ss_pred EEEEECCCCCCHHHHHHHHHHCCCCC-CCCCCCCCEE----EEEEEEEECCEEEEEEEEECCCCCCCCCCHHHHH----- T ss_conf 89999949987999999999597899-9867765247----7999999999999999997998633464647771----- Q ss_pred HHHHHHHHHHHCCCCCCCCCCCCC--CHHHH--HHHHHHCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHCCCCCC Q ss_conf 987777664200000112235788--75454--55432102575322122221111024689999999999753136898 Q gi|254780484|r 111 IVRYLSERSTLRCVYLLIDCRHGV--KQIDQ--DVFSFLDKKAVSYQIVLTKIDKLSPTTAQETLEKTKYLIRNYPTAHP 186 (212) Q Consensus 111 ~~~~~~~~~~~~~~~~~~~~~~~~--~~~~~--~~~~~~~~~~~~~~~v~nK~D~~~~~~~~~~~~~~~~~~~~~~~~~~ 186 (212) T Consensus 72 --------~~a~~~ilvydit~~~Sf~~l~~w~~~i~~~~~~~~~iilVGNK~DL~~~r~V~--~~e~~~~a~~~---~~ 138 (191) T cd04112 72 --------RDAHALLLLYDITNKASFDNIRAWLTEIKEYAQEDVVIMLLGNKADMSGERVVK--REDGERLAKEY---GV 138 (191) T ss_pred --------HCCCEEEEEEECCCHHHHHHHHHHHHHHHHHCCCCCEEEEECCCCCCCCCCCCC--HHHHHHHHHHC---CC T ss_conf --------177778999727988999999999999998666785389861246553026799--99999999982---99 Q ss_pred CEEEEECCCCCCHHHHHHHHHHHH Q ss_conf 689998888899899999999872 Q gi|254780484|r 187 EVIPTSSVKRKGIEVLRKAILETI 210 (212) Q Consensus 187 ~i~~vSA~~g~Gi~eL~~~I~~~l 210 (212) T Consensus 139 ~f~EtSAkt~~nI~e~F~~i~~~i 162 (191) T cd04112 139 PFMETSAKTGLNVELAFTAVAKEL 162 (191) T ss_pred EEEEECCCCCCCHHHHHHHHHHHH T ss_conf 799985489809799999999999

HHsearch alignment for GI: 254780484 and conserved domain: cd04112