>cd01862 Rab7 Rab7 subfamily. Rab7 is a small Rab GTPase that regulates vesicular traffic from early to late endosomal stages of the endocytic pathway. The yeast Ypt7 and mammalian Rab7 are both involved in transport to the vacuole/lysosome, whereas Ypt7 is also required for homotypic vacuole fusion. Mammalian Rab7 is an essential participant in the autophagic pathway for sequestration and targeting of cytoplasmic components to the lytic compartment. Mammalian Rab7 is also proposed to function as a tumor suppressor. 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-

Probab=99.10 E-value=1.5e-09 Score=81.83 Aligned_cols=152 Identities=18% Similarity=0.237 Sum_probs=94.8 Q ss_pred EEEECCCCCCHHHHHHHHHHHCCCCCCCCCCCCEECCCCHHHHHCCCEEEEEEEEEEECCEEEEEECCCCCCCCHHHHHH Q ss_conf 99985468987788999999839614232200000388577987096064679999989979999728987540799999 Q gi|254780233|r 22 IAIIAHVDHGKTTLVDELLKQSGVFRDNQRVSERVMDCNDLEKERGITILAKVTSIVWNDVRINIVDTPGHADFGGEVER 101 (624) Q Consensus 22 iaIiaHvDhGKTTL~d~LL~~sG~~~~~~~v~~~vmD~~~~EreRGITI~a~~~~~~~~~~~iNiiDTPGH~DF~gEVer 101 (624) T Consensus 3 ivlvGd~~VGKTsli~r~~~--~~f~~~y~--~Ti----------g~d~~~k~i~~~~~~~~l~iwDtaG~e~~~~l~~~ 68 (172) T cd01862 3 VIILGDSGVGKTSLMNQYVN--KKFSNQYK--ATI----------GADFLTKEVTVDDKLVTLQIWDTAGQERFQSLGVA 68 (172) T ss_pred EEEECCCCCCHHHHHHHHHC--CCCCCCCC--CCC----------CEEEEEEEEEECCEEEEEEEEECCCCHHHHHHHHH T ss_conf 99999899789999999952--98898757--755----------51699999999999999999969998311068899 Q ss_pred HHHHHCEEEEEEECCCCCCHHHH---HHHHHH-HH-------CCCCEEEEEECCCCCCCCHHHHHHHHHHHHHHCCCCHH Q ss_conf 98742178999976878864789---999999-97-------29978999975436674025689999988862267301 Q gi|254780233|r 102 ILCMVESVVVLVDAAEGPMPQTK---FVVGKA-LK-------IGLRPIVVVNKVDRSDARADEVINEVFDLFSALDATDA 170 (624) Q Consensus 102 ~l~~~DgaiLvVdA~eGv~~QT~---~vl~~A-~~-------~~l~~IvvINKiDr~~a~~~~v~~ei~dlf~~l~a~de 170 (624) T Consensus 69 ~~~~a~~~ilvydvt~---~~Sf~~l~~w~~~~~~~~~~~~~~~~piilvgNK~Dl~~~r~V-~~~e~~~~a~~~~---- 140 (172) T cd01862 69 FYRGADCCVLVYDVTN---PKSFESLDSWRDEFLIQASPSDPENFPFVVLGNKIDLEEKRQV-STKKAQQWCQSNG---- 140 (172) T ss_pred HHHHCCEEEEEECCCC---HHHHHHHHHHHHHHHHHCCCCCCCCCCEEEEEECCCHHHCCCC-CHHHHHHHHHHCC---- T ss_conf 8652757999933899---8999999999999999727677657638999633683641899-9999999999769---- Q ss_pred HCCHHHHHHHHHCCEECCCCCCCCCCCCHHHHHHHHCC Q ss_conf 10426688788659164674223348641355532102 Q gi|254780233|r 171 QLDFPILYGSGRFGWMSDSSDGSRDQGMVPLLNLIVDH 208 (624) Q Consensus 171 ~ld~Pv~~~Sa~~G~~~~~~~~~~~~gl~~Lld~Ii~~ 208 (624) T Consensus 141 --~~~~~E~SAk~~-----------~nV~e~F~~l~~~ 165 (172) T cd01862 141 --NIPYFETSAKEA-----------INVEQAFETIARK 165 (172) T ss_pred --CCEEEEECCCCC-----------CCHHHHHHHHHHH T ss_conf --978999752679-----------1989999999999

HHsearch alignment for GI: 254780233 and conserved domain: cd01862