>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=98.21 E-value=6.9e-05 Score=52.71 Aligned_cols=149 Identities=19% Similarity=0.302 Sum_probs=87.0 Q ss_pred CEEEEEECCCCCHHHHHHHHHCCCCCCCCCCCCCCCCCCEEE--EECCCHHHHHHHHHCCCCEEEEEEEEEEECCCCCCC Q ss_conf 248675288878889999874048987366686744883379--976855587776421865023357999851223543 Q gi|254780226|r 3 FKCGIIGLPNVGKSTLFNALTRTASAQAANYPFCTIEPNSGE--VAVPDPRMHKLAEIAESKDLVPTRMSFVDIAGLVRG 80 (367) Q Consensus 3 ~kiGlvG~pn~GKST~f~alT~~~~~~~~~ypFtTi~pn~g~--~~v~d~~~~~l~~~~~~~~~~p~~i~~iDvaGLv~g 80 (367) T Consensus 1 ~KIv~vGd~~VGKTsli~r~~~~-~f~~~~~~-~Ti~~~~~~k~~~~------------~~---~~v~l~iwDtaG~e~- 62 (191) T cd04112 1 FKVMLLGDSGVGKTCLLVRFKDG-AFLNGNFI-ATVGIDFRNKVVTV------------DG---VKVKLQIWDTAGQER- 62 (191) T ss_pred CEEEEECCCCCCHHHHHHHHHHC-CCCCCCCC-CCCCEEEEEEEEEE------------CC---EEEEEEEEECCCCCC- T ss_conf 98999994998799999999959-78999867-76524779999999------------99---999999997998633- Q ss_pred CCCCCCCHHHHHHHHHCCCEEEEEECCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCHHHHH Q ss_conf 22246632899998730374788501234542113457767321578898888764332224577777875203204677 Q gi|254780226|r 81 ASKGEGLGNQFLAHIREVDAIIHVLRCFKDENIIHVEGRIDPINDIETIETELMLSDLERLERLFEKNKKYRNHKSEEIV 160 (367) Q Consensus 81 A~~G~GlGN~FL~~ir~aDalihVVdaf~~~~v~~~~g~~DP~~Di~~i~~EL~l~dle~lek~~~k~~k~~~~~~~~~~ 160 (367) T Consensus 63 ---~~~l~~---~~~~~a~~~ilvydit~~~S----------f~~---------------l~-~w--------------- 95 (191) T cd04112 63 ---FRSVTH---AYYRDAHALLLLYDITNKAS----------FDN---------------IR-AW--------------- 95 (191) T ss_pred ---CCCCHH---HHHHCCCEEEEEEECCCHHH----------HHH---------------HH-HH--------------- T ss_conf ---464647---77117777899972798899----------999---------------99-99--------------- Q ss_pred HHHHHHHHHHHHHHCCCCCHHHHHHCCHHHHHHHHHHHHHHHCCCHHEECCCHHHHCCCHHHHHHHHHHHHHCCCCCCCC Q ss_conf 78999998899887587410344313267776210235764101001003430111010134678778864369840332 Q gi|254780226|r 161 LLQSIISSSLRLIEEGKPVRSLLESLDSDAIPIFKSLNLLTAKPILYICNVSEHDCKKGNIYTEAVQRLASQQNAEMIII 240 (367) Q Consensus 161 ~~~~~l~~~~~~Le~~~~~r~~~~~~~~de~~~l~~~~llt~KP~iivaNk~e~~~~~~n~~~e~i~~l~~~~~~~~i~i 240 (367) T Consensus 96 ------------~~~---i~~----~~~------------~~~~iilVGNK~DL~~~r-~V~~~e~~~~a~~~~~~f~Et 143 (191) T cd04112 96 ------------LTE---IKE----YAQ------------EDVVIMLLGNKADMSGER-VVKREDGERLAKEYGVPFMET 143 (191) T ss_pred ------------HHH---HHH----HCC------------CCCEEEEECCCCCCCCCC-CCCHHHHHHHHHHCCCEEEEE T ss_conf ------------999---998----666------------785389861246553026-799999999999829979998 Q ss_pred CCHHHHHH Q ss_conf 10024665 Q gi|254780226|r 241 SAAIEAEI 248 (367) Q Consensus 241 sa~~E~ei 248 (367) T Consensus 144 SAkt~~nI 151 (191) T cd04112 144 SAKTGLNV 151 (191) T ss_pred CCCCCCCH T ss_conf 54898097

HHsearch alignment for GI: 254780226 and conserved domain: cd04112