Evidence map›Paper›PMID 9435077›Full record

ArticleApplied and environmental microbiology1998

Purification and characterization of a novel thermostable alpha-L-arabinofuranosidase from a color-variant strain of Aureobasidium pullulans.

B C Saha, R J Bothast

Open access · bronzeAbstract read
In one paragraph

Article in Applied and environmental microbiology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.0field-weighted citation impact, top 14% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Alpha-L-arabinofuranosidases: the potential applications in biotechnology.Journal of industrial microbiology & biotechnology · 2006
    Review
  10. Article
  11. Article
  12. Hemicellulose bioconversion.Journal of industrial microbiology & biotechnology · 2003
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

B C SahaFermentation Biochemistry Research Unit, National Center for Agricultural Utilization Research, U.S. Department of Agriculture, Peoria, Illinois 61604, USA. sahabc@mail.ncaur.usda.gov
R J Bothast
Agricultural Research Service · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A color-variant strain of Aureobasidium pullulans (NRRL Y-12974) produced alpha-L-arabinofuranosidase (alpha-L-AFase) when grown in liquid culture on oat spelt xylan. An extracellular alpha-L-AFase was purified 215-fold to homogeneity from the culture supernatant by ammonium sulfate treatment, DEAE Bio-Gel A agarose column chromatography, gel filtration on a Bio-Gel A-0.5m column, arabinan-Sepharose 6B affinity chromatography, and SP-Sephadex C-50 column chromatography. The purified enzyme had a native molecular weight of 210,000 and was composed of two equal subunits. It had a half-life of 8 h at 75 degrees C, displayed optimal activity at 75 degrees C and pH 4.0 to 4.5, and had a specific activity of 21.48 mumol min-1. mg-1 of protein against p-nitrophenyl-alpha-L-arabinofuranoside (pNP alpha AF). The purified alpha-L-AFase readily hydrolyzed arabinan and debranched arabinan and released arabinose from arabinoxylans but was inactive against arabinogalactan. The K(m) values of the enzyme for the hydrolysis of pNP alpha AF, arabinan, and debranched arabinan at 75 degrees C and pH 4.5 were 0.26 mM, 2.14 mg/ml, and 3.25 mg/ml, respectively. The alpha-L-AFase activity was not inhibited at all by L-arabinose (1.2 M). The enzyme did not require a metal ion for activity, and its activity was not affected by p-chloromercuribenzoate (0.2 mM), EDTA (10 mM), or dithiothreitol (10 mM).

Indexed as

Ammonium SulfateArabinoseChloromercuribenzoatesChromatography, AgaroseChromatography, DEAE-CelluloseChromatography, GelCulture MediaDithiothreitolEdetic AcidGalactansGlycoside HydrolasesKineticsMitosporic Fungip-Chloromercuribenzoic AcidPolysaccharidesProtein Conformation4-nitrophenyl-alpha-L-arabinofuranosidealpha-N-arabinofuranosidaseAmmonium SulfatearabanarabinogalactanArabinosearabinoxylanChloromercuribenzoatesCulture MediaDithiothreitolEdetic AcidGalactansGlycoside Hydrolasesp-Chloromercuribenzoic AcidPolysaccharidesXylans

Identifiers

PMID9435077
PMCPMC124696
OpenAlexW2167903265

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.