5XD0:
reference: Improvement of enzyme activity of beta-1,3-1,4-glucanase from Paenibacillus sp. X4 by error-prone PCR and structural insights of mutated residues., Baek SC, Ho TH, Lee HW, Jung WK, Gang HS, Kang LW, Kim H, Appl Microbiol Biotechnol. 2017 Feb 8. doi: 10.1007/s00253-017-8145-4. PMID: 28180917

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