>cd04111 Rab39 Rab39 subfamily. Found in eukaryotes, Rab39 is mainly found in epithelial cell lines, but is distributed widely in various human tissues and cell lines. It is believed to be a novel Rab protein involved in regulating Golgi-associated vesicular transport during cellular endocytosis. 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=99.35 E-value=4.6e-12 Score=103.49 Aligned_cols=137 Identities=25% Similarity=0.359 Sum_probs=92.2 Q ss_pred CCEEEECCCCCCHHHHHHHHHCCHHCCCCCC-CCCCEEECCCCCCCC-C--EEEEEEECCHHCCCCHHHHHHHHHHHHHH Q ss_conf 3024311466318889999855200023454-687211000124568-3--58999508100024103566667888998 Q gi|254780809|r 220 YKIVILGHSNAGKSSLFNALAKKDVAIVTDI-PGTTRDVLTIDLDLE-G--YLVKISDTAGIRETDDIVEKEGIKRTFLE 295 (440) Q Consensus 220 ~~v~i~G~pN~GKSSL~N~L~~~~~aIVs~~-~GTTRD~i~~~~~i~-g--~~~~l~DTaGir~t~d~IE~~GI~ra~~~ 295 (440) T Consensus 3 fKivllGd~~VGKTsL~~rf~~~~F~--~~~~~Tig~df~~k~i~i~dg~~v~l~IwDTaGqe~~~s--------i~~~y 72 (211) T cd04111 3 FRLIVIGDSTVGKSSLLKRFTEGRFA--EVSDPTVGVDFFSRLIEIEPGVRIKLQLWDTAGQERFRS--------ITRSY 72 (211) T ss_pred EEEEEECCCCCCHHHHHHHHHHCCCC--CCCCCCCCEEEEEEEEEECCCCEEEEEEEECCCCCCCCC--------CHHHH T ss_conf 99999999996199999999819999--986872016889989997799599999997988634564--------42877 Q ss_pred HHHHCCEEECCCCCCHHHHHH-------------HCCCCCCCCCCCCCCCCCCCHH-------------HHHHHHHHHHH Q ss_conf 503011020135898566343-------------1289853222233344654200-------------00013333232 Q gi|254780809|r 296 VENADLILLLKEINSKKEISF-------------PKNIDFIFIGTKSDLYSTYTEE-------------YDHLISSFTGE 349 (440) Q Consensus 296 i~~aDlil~v~D~~~~~~~~~-------------~~~~~~i~V~NK~Dl~~~~~~~-------------~~~~ISaktg~ 349 (440) T Consensus 73 yr~a~g~ilVyDvt~~~SF~~l~~W~~ei~~~~~~~~~~iiLVGNK~DL~~~R~Vs~ee~~~~A~~~~~~f~EtSAK~g~ 152 (211) T cd04111 73 YRNSVGVLLVFDITNRESFEHVHDWLEEARSHIQPHRPVFILVGHKCDLESQRQVTREEAEKLAKDLGMKYIETSARTGD 152 (211) T ss_pred HHHCCEEEEEECCCCHHHHHHHHHHHHHHHHHCCCCCCEEEEEEECCCHHHHCCCCHHHHHHHHHHHCCEEEEECCCCCC T ss_conf 42124468971477779999999999999997498885389887423128567889999999999839979997599981 Q ss_pred HHHHHHHHHHHHHHHHC Q ss_conf 35899999999963220 Q gi|254780809|r 350 GLEELINKIKSILSNKF 366 (440) Q Consensus 350 Gi~~L~~~I~~~l~~~~ 366 (440) T Consensus 153 nV~e~F~~la~~i~~~~ 169 (211) T cd04111 153 NVEEAFELLTQEIYERI 169 (211) T ss_pred CHHHHHHHHHHHHHHHH T ss_conf 98999999999999998

HHsearch alignment for GI: 254780809 and conserved domain: cd04111