1Q47:
reference: Structure of the semaphorin-3A receptor binding module., Antipenko A, Himanen JP, van Leyen K, Nardi-Dei V, Lesniak J, Barton WA, Rajashankar KR, Lu M, Hoemme C, Puschel AW, Nikolov DB, Neuron 2003 Aug 14;39(4):589-98. PMID: 12925274

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