Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
20
pubmed:dateCreated
1991-11-20
pubmed:databankReference
pubmed:abstractText
We have cloned from Bacillus subtilis a novel protease gene (nprB) encoding a neutral protease by using a shotgun cloning approach. The gene product was determined to have a molecular mass of 60 kDa. It has a typical signal peptide-like sequence at the N-terminal region. The expression of nprB can be stimulated by using a B. subtilis strain, WB30, carrying a sacU(h)h mutation. Expression of this protease gene results in production of a 37-kDa protease in the culture medium. The first five amino acid residues from the N terminus of the mature protease were determined to be Ala-Ala-Gly-Thr-Gly. This indicates that the protease is synthesized in a preproenzyme form. The purified protease has a pH optimum of around 6.6, and its activity can be inhibited by EDTA, 1,10-phenanthroline (a zinc-specific chelator), and dithiothreitol. It retained 65% of its activity after treatment at 65 degrees C for 20 min. Sequence comparison indicates that the mature form of this protease has 66% homology with the two thermostable neutral proteases from B. thermoproteolyticus and B. stearothermophilus. It also shares 65, 61, and 56% homology with the thermolabile neutral proteases from B. cereus, B. amyloliquefaciens, and B. subtilis, respectively. The zinc-binding site and the catalytic residues are all conserved among these proteases. Sequence homology extends into the "propeptide" region. The nprB gene was mapped between metC and glyB and was not required for growth or sporulation.
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-12635268, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-14022814, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-16590310, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-1698125, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-1898926, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-2106512, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-2108127, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-2108961, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-2200123, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-2428811, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-2447063, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-2448875, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-2507926, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-2511081, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-2657436, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-2993818, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-3090033, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-3108260, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-3142851, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-3156376, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-3269394, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-357082, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-3611052, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-3714490, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-405929, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-4219582, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-4519026, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-4628133, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-4843146, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-4960898, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-4995746, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-5002444, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-5432063, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-6022847, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-6090391, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-6090407, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-6302083, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-6305768, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-6322190, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-6427178, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-6434524, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-6525336, http://linkedlifedata.com/resource/pubmed/commentcorrection/1917867-7175940
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0021-9193
pubmed:author
pubmed:issnType
Print
pubmed:volume
173
pubmed:geneSymbol
nprB
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6364-72
pubmed:dateRevised
2009-11-18
pubmed:meshHeading
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