7FH1
Structure of the human Meckelin
Summary for 7FH1
Entry DOI | 10.2210/pdb7fh1/pdb |
EMDB information | 31584 |
Descriptor | Meckelin, 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose, beta-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose (3 entities in total) |
Functional Keywords | cryo-em, membrane protein |
Biological source | Homo sapiens (Human) |
Total number of polymer chains | 2 |
Total formula weight | 234328.93 |
Authors | Gong, D.S. (deposition date: 2021-07-29, release date: 2021-12-01, Last modification date: 2024-11-06) |
Primary citation | Liu, D.,Qian, D.,Shen, H.,Gong, D. Structure of the human Meckel-Gruber protein Meckelin. Sci Adv, 7:eabj9748-eabj9748, 2021 Cited by PubMed Abstract: Mutations in the gene account for most cases of the Meckel-Gruber syndrome, the most severe ciliopathy with a 100% mortality rate. Here, we report a 3.3-Å cryo–electron microscopy structure of human Meckelin (also known as TMEM67 and MKS3). The structure reveals a unique protein fold consisting of an unusual cysteine-rich domain that folds as an arch bridge stabilized by 11 pairs of disulfide bonds, a previously uncharacterized domain named β sheet–rich domain, a previously unidentified seven-transmembrane fold wherein TM4 to TM6 are broken near the cytoplasmic surface of the membrane, and a coiled-coil domain placed below the transmembrane domain. Meckelin forms a stable homodimer with an extensive dimer interface. Our structure establishes a framework for dissecting the function and disease mechanisms of Meckelin. PubMed: 34731008DOI: 10.1126/sciadv.abj9748 PDB entries with the same primary citation |
Experimental method | ELECTRON MICROSCOPY (3.34 Å) |
Structure validation
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