9.A.75.1.1 The MHCII complex of three proteins, DQ alpha-1, DQ beta-1 (which form a heterodimer) and a CD75 homotrimer that together form a nanomer with 3 copies of the MHCII dimer. It transports antigenic peptides to the cell surface (Wosen et al. 2018). The structure, topology, and dynamics of membrane-inserted polypeptides and lipids have been examined by solid-state NMR spectroscopy, specifically with respect to the transmembrane domains of the DQ Beta-1 subunit of the MHC II receptor and the COP I protein, p24 (Salnikov et al. 2019).
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Accession Number: | P01909 |
Protein Name: | HLA class II histocompatibility antigen, DQ alpha 1 chain |
Length: | 254 |
Molecular Weight: | 27805.00 |
Species: | Homo sapiens (Human) [9606] |
Number of TMSs: | 1 |
Location1 / Topology2 / Orientation3: |
Cell membrane1 / Single-pass type I membrane protein2 |
Substrate |
peptide |
---|
1: MILNKALMLG ALALTTVMSP CGGEDIVADH VASYGVNLYQ SYGPSGQYTH EFDGDEQFYV
61: DLGRKETVWC LPVLRQFRFD PQFALTNIAV LKHNLNSLIK RSNSTAATNE VPEVTVFSKS
121: PVTLGQPNIL ICLVDNIFPP VVNITWLSNG HSVTEGVSET SFLSKSDHSF FKISYLTLLP
181: SAEESYDCKV EHWGLDKPLL KHWEPEIPAP MSELTETVVC ALGLSVGLVG IVVGTVFIIR
241: GLRSVGASRH QGPL