>cd01866 Rab2 Rab2 subfamily. Rab2 is localized on cis-Golgi membranes and interacts with Golgi matrix proteins. Rab2 is also implicated in the maturation of vesicular tubular clusters (VTCs), which are microtubule-associated intermediates in transport between the ER and Golgi apparatus. In plants, Rab2 regulates vesicle trafficking between the ER and the Golgi bodies and is important to pollen tube growth. 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 featur

Probab=99.11 E-value=2.3e-10 Score=88.83 Aligned_cols=146 Identities=21% Similarity=0.236 Sum_probs=95.7 Q ss_pred EEEEECCCCCHHHHHHHHHHHHHHHCCCCCCEECCCEE----EEECC--CCEEEEEECCCHHHHHHHHHHHHHCCCCEEE Q ss_conf 89862368504467778864222100123100012149----99517--8438888516615789998666420680599 Q gi|254780787|r 386 VTIMGHVDHGKTSLLDAIRKADVAKGEIGGITQHIGAY----QVAYQ--GKNITFLDTPGHAAFYEMRARGARVTDIAVL 459 (884) Q Consensus 386 v~v~ghvd~GKt~lld~~r~~~~~~~e~ggitq~iga~----~~~~~--~~~~~~iDtPGh~~f~~~r~rg~~~~d~~il 459 (884) T Consensus 7 ivlvGd~~VGKTsli~r~~~~~f~~~~--~~T--ig~~~~~k~i~~~~~~~~l~iwDt~G~e~~~~l~~~~~~~a~~~il 82 (168) T cd01866 7 YIIIGDTGVGKSCLLLQFTDKRFQPVH--DLT--IGVEFGARMITIDGKQIKLQIWDTAGQESFRSITRSYYRGAAGALL 82 (168) T ss_pred EEEECCCCCCHHHHHHHHHCCCCCCCC--CCC--CEEEEEEEEEEECCEEEEEEEEECCCCCCCCCCHHHHHHHHCEEEE T ss_conf 999998997889999999109899987--898--5078899999999999999999799973346255888664368999 Q ss_pred EEECCCCCCHHHHHHH-HHHHH---CCCCEEEECCCCCCCCCCCCHHHHHHHCCCCCCCCCCCCCEEEEEEECCCCCCCC Q ss_conf 9983667402357778-98997---0994156123312443320002210000132000123474036311002477411 Q gi|254780787|r 460 VLAADEEIMPQAIESI-NHAKA---ADVSIIVAINKIDKLGADPQKVRMSLLKHDVFVESMGGDILDVEISAKNNLNLDK 535 (884) Q Consensus 460 vv~~~~g~~~qt~e~~-~~~~~---~~~p~iva~nk~d~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 535 (884) T Consensus 83 vydit~~~Sf~~l~~w~~~i~~~~~~~~~iiLVGNK~DL~~~r--~V~~~e~~~--~a~~~--~~~~~E~SAk~~~nV~~ 156 (168) T cd01866 83 VYDITRRETFNHLTSWLEDARQHSNSNMTIMLIGNKCDLESRR--EVSYEEGEA--FAKEH--GLIFMETSAKTASNVEE 156 (168) T ss_pred ECCCCCHHHHHHHHHHHHHHHHHCCCCCEEEEEEECCCHHHCC--CCCHHHHHH--HHHHC--CCEEEEECCCCCCCHHH T ss_conf 3445877999999999999998679996599843423545407--789999999--99986--99999976788808899 Q ss_pred CCCCHH Q ss_conf 221000 Q gi|254780787|r 536 LLDAIL 541 (884) Q Consensus 536 ~~~~~~ 541 (884) T Consensus 157 ~F~~l~ 162 (168) T cd01866 157 AFINTA 162 (168) T ss_pred HHHHHH T ss_conf 999999

HHsearch alignment for GI: 254780787 and conserved domain: cd01866