>cd00154 Rab Rab family. Rab GTPases form the largest family within the Ras superfamily. There are at least 60 Rab genes in the human genome, and a number of Rab GTPases are conserved from yeast to humans. Rab GTPases are small, monomeric proteins that function as molecular switches to regulate vesicle trafficking pathways. The different Rab GTPases are localized to the cytosolic face of specific intracellular membranes, where they regulate distinct steps in membrane traffic pathways. In the GTP-bound form, Rab GTPases recruit specific sets of effector proteins onto membranes. Through their effectors, Rab GTPases regulate vesicle formation, actin- and tubulin-dependent vesicle movement, and membrane fusion. 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 di

Probab=99.17 E-value=5.5e-10 Score=84.76 Aligned_cols=149 Identities=20% Similarity=0.273 Sum_probs=93.4 Q ss_pred EEEEECCCCCCHHHHHHHHHHHCCCCCCCCCCCCEECCCCHHHHHCCCEEEEEEEEEEECC--EEEEEECCCCCCCCHHH Q ss_conf 4999854689877889999998396142322000003885779870960646799999899--79999728987540799 Q gi|254780233|r 21 NIAIIAHVDHGKTTLVDELLKQSGVFRDNQRVSERVMDCNDLEKERGITILAKVTSIVWND--VRINIVDTPGHADFGGE 98 (624) Q Consensus 21 NiaIiaHvDhGKTTL~d~LL~~sG~~~~~~~v~~~vmD~~~~EreRGITI~a~~~~~~~~~--~~iNiiDTPGH~DF~gE 98 (624) T Consensus 2 Ki~vvG~~~vGKTsli~~~~~--~~f~~~~---------~~---Tig~d~~~--~~~~~~~~~~~l~iwDt~G~e~~~~l 65 (159) T cd00154 2 KIVLIGDSGVGKTSLLLRFVD--GKFDENY---------KS---TIGVDFKS--KTIEIDGKTVKLQIWDTAGQERFRSI 65 (159) T ss_pred EEEEECCCCCCHHHHHHHHHH--CCCCCCC---------CC---CCCEEEEE--EEEEECCEEEEEEEEECCCCHHHHHH T ss_conf 899999699689999999970--9999984---------88---66647999--99999999999999978982657788 Q ss_pred HHHHHHHHCEEEEEEECCCCCCHHHHH---HHHH-HHH---CCCCEEEEEECCCCCCCCHHHHHHHHHHHHHHCCCCHHH Q ss_conf 999987421789999768788647899---9999-997---299789999754366740256899999888622673011 Q gi|254780233|r 99 VERILCMVESVVVLVDAAEGPMPQTKF---VVGK-ALK---IGLRPIVVVNKVDRSDARADEVINEVFDLFSALDATDAQ 171 (624) Q Consensus 99 Ver~l~~~DgaiLvVdA~eGv~~QT~~---vl~~-A~~---~~l~~IvvINKiDr~~a~~~~v~~ei~dlf~~l~a~de~ 171 (624) T Consensus 66 ~~~~~~~~d~~ilv~d~~~~---~Sf~~~~~~~~~i~~~~~~~~~iilvgnK~DL~~~~~v-~~~~~~~~a~~------- 134 (159) T cd00154 66 TPSYYRGAHGAILVYDITNR---ESFENLDKWLKELKEYAPENIPIILVGNKIDLEDQRQV-STEEAQQFAKE------- 134 (159) T ss_pred HHHHHHHCCEEEEECCCCCH---HHHHHHHHHHHHHHHHCCCCCCEEEEEECCCCHHCCCC-CHHHHHHHHHH------- T ss_conf 99997541275672448988---99999999999999868988826999974563011689-99999999998------- Q ss_pred CCHHHHHHHHHCCEECCCCCCCCCCCCHHHHHHHHC Q ss_conf 042668878865916467422334864135553210 Q gi|254780233|r 172 LDFPILYGSGRFGWMSDSSDGSRDQGMVPLLNLIVD 207 (624) Q Consensus 172 ld~Pv~~~Sa~~G~~~~~~~~~~~~gl~~Lld~Ii~ 207 (624) T Consensus 135 ~~~~~~e~SAk~~-----------~~i~~~F~~i~~ 159 (159) T cd00154 135 NGLLFFETSAKTG-----------ENVEELFQSLAE 159 (159) T ss_pred CCCEEEEECCCCC-----------CCHHHHHHHHHC T ss_conf 6997999876888-----------198999999869

HHsearch alignment for GI: 254780233 and conserved domain: cd00154