RanBPM is a scaffolding protein and is important in regulating cellular function in both the immune system and the nervous system. This domain is at the C-terminus of the proteins and is the binding domain for the CRA motif (for CT11-RanBPM), which is comprised of approximately 100 amino acids at the C terminal of RanBPM. It was found to be important for the interaction of RanBPM with fragile X messenger ribonucleoprotein 1 (FMRP), but its functional significance has yet to be determined [5]. This region contains CTLH and CRA domains annotated by SMART; however, these may be a single domain, and it is refereed to as a C-terminal to LisH motif [6].

1: When overexpressed, a novel centrosomal protein, RanBPM, causes ectopic microtubule nucleation similar to gamma-tubulin. Nakamura M, Masuda H, Horii J, Kuma K, Yokoyama N, Ohba T, Nishitani H, Miyata T, Tanaka M, Nishimoto T; J Cell Biol. 1998;143:1041-1052. PMID:9817760

2: RanBPM associates with CD39 and modulates ecto-nucleotidase activity. Wu Y, Sun X, Kaczmarek E, Dwyer KM, Bianchi E, Usheva A, Robson SC; Biochem J. 2006;396:23-30. PMID:16478441

3: RanBPM is a phosphoprotein that associates with the plasma membrane and interacts with the integrin LFA-1. Denti S, Sirri A, Cheli A, Rogge L, Innamorati G, Putignano S, Fabbri M, Pardi R, Bianchi E; J Biol Chem. 2004;279:13027-13034. PMID:14722085

4: RanBPM, a scaffolding protein in the immune and nervous systems. Murrin LC, Talbot JN; J Neuroimmune Pharmacol. 2007;2:290-295. PMID:18040864

5: The C terminus of fragile X mental retardation protein interacts with the multi-domain Ran-binding protein in the microtubule-organising centre. Menon RP, Gibson TJ, Pastore A; J Mol Biol. 2004;343:43-53. PMID:15381419

6: A new sequence motif linking lissencephaly, Treacher Collins and oral-facial-digital type 1 syndromes, microtubule dynamics and cell migration. Emes RD, Ponting CP; Hum Mol Genet. 2001;10:2813-2820. PMID:11734546