>cd01869 Rab1_Ypt1 Rab1/Ypt1 subfamily. Rab1 is found in every eukaryote and is a key regulatory component for the transport of vesicles from the ER to the Golgi apparatus. Studies on mutations of Ypt1, the yeast homolog of Rab1, showed that this protein is necessary for the budding of vesicles of the ER as well as for their transport to, and fusion with, the Golgi apparatus. 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. Due to t

Probab=95.57 E-value=0.11 Score=32.24 Aligned_cols=140 Identities=21% Similarity=0.303 Sum_probs=74.9 Q ss_pred CEEECCCCCCCCHHHHHHHHHHHHHHCCCCEEEEECCCCCHHHHHHHHHHHHHHCCCCCCCCCCCCCHHHHHHHHHHHHH Q ss_conf 12311354444424789999999852267426774345124568899999753035321223586612454228999965 Q gi|254780709|r 112 HVILVVGVNGVGKTTVIGKLSKKMSDAGLKVMLAAGDTFRSAAIDQLKIWADRTSADFVCSEIGSDAAALAYEAFKQAQA 191 (321) Q Consensus 112 ~vil~vG~nG~GKTTT~aKLA~~~~~~g~kV~lva~DtfR~aA~eQL~~~a~~~~v~~~~~~~~~dp~~v~~~a~~~a~~ 191 (321) T Consensus 3 ~Kiv~vGd~~vGKTsli~r~~~~--------------~f~-------~~y~~Tig~~~~~~~i-------~~------~~ 48 (166) T cd01869 3 FKLLLIGDSGVGKSCLLLRFADD--------------TYT-------ESYISTIGVDFKIRTI-------EL------DG 48 (166) T ss_pred EEEEEECCCCCCHHHHHHHHHCC--------------CCC-------CCCCCCCCEEEEEEEE-------EE------CC T ss_conf 99999999997899999999439--------------999-------8747854404899999-------99------99 Q ss_pred HCCCEEEEECCCCCCCHHHHHHHHHHHHHHHHCCCCCCCCEEEEECCCCCCHHHHHHHHHHHHHC----C--CC-EEEEE Q ss_conf 14875998654333211577899998998763022234301123102335225778999876435----8--97-69996 Q gi|254780709|r 192 KKVDVLIIDTAGRLHNNSILMAGIGKMIRVLKRLDPHAPHSVLQVLDATTGQNALRQVEMFHAVA----G--TT-GLIMT 264 (321) Q Consensus 192 ~~~DvvliDTAGR~~~~~~lm~EL~ki~~v~~~~~~~~p~~~~lVlda~~gq~~~~~a~~F~~~~----~--~~-g~I~T 264 (321) T Consensus 49 ~~~~l~iwDtaG~e~~~~-----~~~~~-------~~~a~~~ilvfdit~-~~Sf~~i~~w~~~i~~~~~~~~~~ilvgN 115 (166) T cd01869 49 KTIKLQIWDTAGQERFRT-----ITSSY-------YRGAHGIIIVYDVTD-QESFNNVKQWLQEIDRYASENVNKLLVGN 115 (166) T ss_pred EEEEEEEEECCCCCCCCC-----CHHHH-------HHHCCEEEEEECCCC-HHHHHHHHHHHHHHHHHCCCCCCEEEEEE T ss_conf 999999998999823462-----67888-------563267799711799-89999999999999986787774488613 Q ss_pred CCCC-CCC---HHHHHHHHHHHCCCEEEEEC--CCCCCCC Q ss_conf 5457-870---69999999997698899975--8981325 Q gi|254780709|r 265 KMDG-TAR---GGGLIPIVVTHKIPVYFLGV--GEGINDL 298 (321) Q Consensus 265 KlD~-ta~---~G~~ls~~~~~~~Pi~fig~--Ge~i~Dl 298 (321) T Consensus 116 K~DL~~~r~v~~~~~~~~a~~~~~~~~E~SAk~g~nI~e~ 155 (166) T cd01869 116 KCDLTDKRVVDYSEAQEFADELGIPFLETSAKNATNVEQA 155 (166) T ss_pred EECCCCCCCCCHHHHHHHHHHCCCEEEEECCCCCCCHHHH T ss_conf 2011314667999999999983996999876878068999

HHsearch alignment for GI: 254780709 and conserved domain: cd01869