PMID- 21113291 OWN - NLM STAT- MEDLINE DCOM- 20110118 LR - 20211020 IS - 1472-3654 (Electronic) IS - 1472-3646 (Print) IS - 1472-3646 (Linking) VI - 2010 DP - 2010 Nov 11 TI - Two major archaeal pseudomurein endoisopeptidases: PeiW and PeiP. PG - 480492 LID - 10.1155/2010/480492 [doi] LID - 480492 AB - PeiW (UniProtKB Q7LYX0) and PeiP (UniProtKB Q77WJ4) are the two major pseudomurein endoisopeptidases (Pei) that are known to cleave pseudomurein cell-wall sacculi of the members of the methanogenic orders Methanobacteriales and Methanopyrales. Both enzymes, originating from prophages specific for some methanogenic archaeal species, hydrolyze the ϵ(Ala)-Lys bond of the peptide linker between adjacent pseudomurein layers. Because lysozyme is not able to cleave the pseudomurein cell wall, the enzymes are used in protoplast preparation and in DNA isolation from pseudomurein cell-wall-containing methanogens. Moreover, PeiW increases the probe permeability ratio and enables fluorescence in situ hybridization (FISH) and catalyzed reporter deposition (CARD-) FISH experiments to be performed on these methanogens. FAU - Visweswaran, Ganesh Ram R AU - Visweswaran GR AD - Department of Molecular Genetics, GBB, University of Groningen, Kerklaan 30, 9751 NN Haren, The Netherlands. FAU - Dijkstra, Bauke W AU - Dijkstra BW FAU - Kok, Jan AU - Kok J LA - eng PT - Journal Article PT - Review DEP - 20101111 PL - United States TA - Archaea JT - Archaea (Vancouver, B.C.) JID - 101142614 RN - 0 (Peptidoglycan) RN - EC 3.4.- (Endopeptidases) SB - IM MH - Endopeptidases/*chemistry/genetics/*metabolism MH - Methanobacteriaceae/*enzymology MH - Peptidoglycan PMC - PMC2989375 EDAT- 2010/11/30 06:00 MHDA- 2011/01/19 06:00 PMCR- 2010/11/11 CRDT- 2010/11/30 06:00 PHST- 2010/06/30 00:00 [received] PHST- 2010/10/08 00:00 [accepted] PHST- 2010/11/30 06:00 [entrez] PHST- 2010/11/30 06:00 [pubmed] PHST- 2011/01/19 06:00 [medline] PHST- 2010/11/11 00:00 [pmc-release] AID - 10.1155/2010/480492 [doi] PST - epublish SO - Archaea. 2010 Nov 11;2010:480492. doi: 10.1155/2010/480492.