SIP3

Membrane-anchored lipid-binding protein SIP3

1229 amino acids

May be involved in sterol transfer between intracellular membranes.

Belongs to the SIP3 family.

142.82 kDa

MSVHGRDPKKRQLRLISVAFKEASIDSPSFRASVNFFQTRVDALEDWIEKTVDFFDQKYKVSFEDFRRAKETLLSQLLPPPALLSNGFVSNQSFTPRLIDSFNKDYYDFSMKLLQIVKGDDSSHSTALLELMTTAIEPYRNVRKNFDFYQGKYDSMLASYQAIRISKTSLEPSSIKSDALQLFEVQKNYLKASLDLISAISAVKLSLDKFILESMKVLKSRSIFITKDSGRKIDLSPCINEYLDNYAIWVENSIEGSKVLDSDISNAKKQAYRYTLKRITPSSDTSDYNIRSIHSSKLLSKDTQVPPKSPEKSGWLYMKTQVGKPTREIWVRRWCFLKNAVFGMFLLSPSKTYVEETDKFGVFLTNVRYDPEEDRKFCFEVKIFGNKVTEAHDNMSKDITLVFQTSNYLDLKSWLIAFEATKKYVMSIQHDSLEYELAFKRFSPKFFEFASSTTTSIDQLITTFDKETESLYETLNCSISEYDILTLGEEKVFQFQMPTTPISTKMTQLAILSNFLTKGSWFPNAVLANIWGTTDWSEYTILPGKGKKPSSLLTIDGKRLPIRNSTIYPQYYSNELKVLDLQFKSLVFSPDQRLEKLPEELLLFKFEALWCPNKKQKFSATCFCTKDYIYCYMNSMEFICLTKISLSEIVSVEADRSSKKTLKLYDASGLQMKAIVLFSDYKLIASKLQYLLENKAIKNPNSNEEILVKFEQMEKESQEKKQEELYKIEQENSFDRKATSVSKIIKSRVTFWEMSDDASTLLNRLKKLQTEYSITYNHEYEISSKGLAHILFGDKSNAFPKCLFLARKDGEEHGKRFWYKNKDINGKSQLVRKIPFRLDMTGNFLNTGKYHRDKESKMIFATQRIVKIVDNKYYEVDLDPFFVKVPFCHLLKLSIKFVITESYDVDNHLEIKLNMTASSSSLHVLYKLEYIDSRTGKTIEKLSLAEIICQTWALKFAHSEFLLIRRVLRYYLEKIGKHGKVIKAIKLCGILGVLSNKSEEPATEKNGNSKESESMQYDIRYSCTILFLVFIKLMVYRVTNLTFVFFRILIGILLLCAEKFSRINRMMVVGLLASIMINILLSEKASVPYWSIKRAEKLFHDRLGSDKFTMQRAIYISDSDLLSSQLSVPSNNPIFEKFSEDNFNKDYQYSETRKQLAMRRNELLIELRILQDMEKQLVHDDYEKFLLEEVNKCSMVSIEMTDLWFNDTQLQNYCSICNEELEKLRPPIT

sip3

E3 ubiquitin-protein ligase HRD1

626 amino acids

Acts as an E3 ubiquitin-protein ligase which accepts ubiquitin specifically from endoplasmic reticulum-associated UBC7 E2 ligase and transfers it to substrates, promoting their degradation. Component of the endoplasmic reticulum quality control (ERQC) system also called ER-associated degradation (ERAD) involved in ubiquitin-dependent degradation of misfolded endoplasmic reticulum proteins. Also promotes the degradation of normal but naturally short-lived proteins. Protects cells from ER stress-induced apoptosis. Sequesters p53 in the cytoplasm and promotes its degradation, thereby negatively regulating its biological function in transcription, cell cycle regulation and apoptosis.

Belongs to the HRD1 family.

69.272 kDa

MQLLLSSVCMALTSAVIGFAYYQKQQFYPAVVYITKSNASMGVIYIQFFVIVFMFGKLLSKIFLGTLRAAEFEHLLERFWYALTETCLAFTVFRDDFNPRFVALFTVLLFLKSFHWLAEERVDFMERSPVLGWLFHIRVGSLLTVLGILDYVLLIHAYNSTLVRGPTVQLVFGFEYAILLTVIASTAIKYVLHAAEMRTDTPWENKAVFLLYTELVIGLIKVVLYILFVVIMAKIYALPMFVFRPMFFTIRNFRKALNDVIMSRRAIRNMNTLYPDATPEELRQSDNICIICREDMVNHSKKLPCGHIFHTTCLRSWFQRQQTCPTCRLNILRTPTVNSTAMPRQGDEAVAAAAGNPIPAAAGVQPAGGVPPPAPTAVVDGNQARADVNVAGGQALPPNFADLFGDASGLPNGLPNLAGLQIPPPPVMPMISPFMIPPHFGYLTPLPPPPIPQDLTNFTDEELRAMEGLQRDHIVQRLKLLQNINLMLDSAGIMMSQYQSLSARLQLTAVTPATAVNGSADSSVYDMPSTSATAMAQLETHQVTPTAAASSASPTMPAEKVTIEDLGADADEDDIPSTATEAVSIPNSDADFEENSSELGELRKRRLKFLEERNKSAATNERTTAE