>pfam12349 Sterol-sensing Sterol-sensing domain of SREBP cleavage-activation. Sterol regulatory element-binding proteins (SREBPs) are membrane-bound transcription factors that promote lipid synthesis in animal cells. They are embedded in the membranes of the endoplasmic reticulum (ER) in a helical hairpin orientation and are released from the ER by a two-step proteolytic process. Proteolysis begins when the SREBPs are cleaved at Site-1, which is located at a leucine residue in the middle of the hydrophobic loop in the lumen of the ER. Upon proteolytic processing SREBP can activate the expression of genes involved in cholesterol biosynthesis and uptake. SCAP stimulates cleavage of SREBPs via fusion of the their two C-termini. This domain is the transmembrane region that traverses the membrane eight times and is the sterol-sensing domain of the cleavage protein. WD40 domains are found towards the C-terminus.

Probab=99.73 E-value=2.7e-16 Score=113.25 Aligned_cols=141 Identities=16% Similarity=0.288 Sum_probs=116.9 Q ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCHHHHHHH-HHHHHHHHCCEEEEEEEEHHHHHHCCCCCCHHHHHHHHH Q ss_conf 9999989999999999999999999997571456999999-999975335747887210355550577999899999999 Q gi|254780925|r 687 RFKWYFALGAITTLILDITKTLGFFALFGIEFNLTAVAAV-LTLIGYSVNDKVVVYDRMRKNMKLYTTSISFRDLIDKSI 765 (833) Q Consensus 687 rf~~~~~i~aiial~~~v~~~~g~~~~~g~~~~~~~i~~~-l~iiG~svd~~I~~~~RirE~~~~~~~~~~~~~~v~~~~ 765 (833) T Consensus 3 ~Sk~~L~~~g~~~v~~s~~~~~G~~~~~G~~~~~~~~~v~PflilgiGvd~~~~l~~~~~~----~~~~~~~~~~i~~~l 78 (153) T pfam12349 3 KSKFGLGLAGVIQVLLSVASSFGLCAYFGVPFTLIPGEVIPFLVLAVGVDNMFILVHAVQR----TSRSLDVEERIAEAL 78 (153) T ss_pred CCHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHCCCHHHHHHHHHH----HCCCCCHHHHHHHHH T ss_conf 3013999999999999999999999996987424478898799888742652039999998----446899899999999 Q ss_pred HHHHHHHHHHHHHHHHHHHHHHHCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCC Q ss_conf 8777999999999999999999705343566389999999999999999999999998630122036 Q gi|254780925|r 766 NETLGRSVYTSMAAFISVLPMAVWGGSVIGSFAIPMAFGIVVAASSSIFIAAPILLFIYDWRAKNAR 832 (833) Q Consensus 766 ~~~~~~~i~ts~tt~~~~~~l~~~~~~~~~~f~~~~~~gvi~~~~~sifi~~~~~~~~~~~~~k~~~ 832 (833) T Consensus 79 ~~~g~~i~~tsltt~~~F~~~~~s~ip~i~~Fg~~~~~~v~~~~l~~~t~fpa~L~ld~rR~-~~~r 144 (153) T pfam12349 79 GEVGPSITLTSLTELLAFLIGALTPMPAVQEFCLFAAVAVLFDFLLQITFFVAVLSLDIRRE-LSNR 144 (153) T ss_pred HHHHHHHHHHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH-HCCC T ss_conf 99869999999999999999980676999999999999999999999999999999999999-9799

HHsearch alignment for GI: 254780925 and conserved domain: pfam12349