The Meckel-Gruber Syndrome proteins MKS1 and meckelin interact and are required for primary cilium formation. by Dawe, H, Smith, U, Cullinane, A, Gerrelli, D, Cox, P, Badano, J, Blair-Reid, S, Sriram, N, Katsanis, N, Attie-Bitach, T, Afford, S, Copp, A, Kelly, D, Gull, K, Johnson, C