>cd04107 Rab32_Rab38 Rab38/Rab32 subfamily. Rab32 and Rab38 are members of the Rab family of small GTPases. Human Rab32 was first identified in platelets but it is expressed in a variety of cell types, where it functions as an A-kinase anchoring protein (AKAP). Rab38 has been shown to be melanocyte-specific. 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=94.09 E-value=0.2 Score=29.33 Aligned_cols=72 Identities=13% Similarity=0.259 Sum_probs=43.3 Q ss_pred EEEECCCCCCHHHHHHHHHHHHCCCCCCCCCCCHHHHH---HHCCC-CCCEEEEEEECCCCHHHHHCCCHHHHCC--CCE Q ss_conf 99987878688999999997607888530245202011---00378-8608999865178977753058367508--978 Q gi|254780824|r 36 LTLSGDLGSGKSFLARSIIRFLMHDDALEVLSPTFTLV---QLYDA-SIPVAHFDFYRLSSHQEVVELGFDEILN--ERI 109 (162) Q Consensus 36 i~L~GdLGaGKTtfvr~i~~~lg~~~~~~V~SPTF~l~---~~Y~~-~~~i~H~DlYRL~~~~E~~~lg~~e~~~--~~i 109 (162) T Consensus 3 vvllGd~gVGKTsLi~rf~~~~F~~~----y~~Tig~df~~k~i~~~~~~~v~l~iwDtaGqe~~~~l-~~~y~~~a~~~ 77 (201) T cd04107 3 VLVIGDLGVGKTSIIKRYVHGIFSQH----YKATIGVDFALKVIEWDPNTVVRLQLWDIAGQERFGGM-TRVYYRGAVGA 77 (201) T ss_pred EEEECCCCCCHHHHHHHHHHCCCCCC----CCCCCCEEEEEEEEEECCCEEEEEEEEECCCCCCCCCC-HHHHCCCCCEE T ss_conf 99999999789999999982999998----88875677899899967981999999868998322200-37555577647 Q ss_pred EEE Q ss_conf 999 Q gi|254780824|r 110 CII 112 (162) Q Consensus 110 ~lI 112 (162) T Consensus 78 ilv 80 (201) T cd04107 78 IIV 80 (201) T ss_pred EEE T ss_conf 999

HHsearch alignment for GI: 254780824 and conserved domain: cd04107