Isolation and partial characterization of trehalose 6-phosphate synthase aggregates from Selaginella lepidophylla plants (Record no. 42372)

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control field 20250625124713.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-8061
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
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245 10 - TITLE STATEMENT
Title Isolation and partial characterization of trehalose 6-phosphate synthase aggregates from Selaginella lepidophylla plants
490 0# - SERIES STATEMENT
Volume/sequential designation Biochimie, 88(10), p.1505-1510, 2006
520 3# - SUMMARY, ETC.
Summary, etc. Trehalose 6-phosphate synthase was purified from Selaginella lepidophylla plants and three aggregates of the enzyme were found by molecular exclusion chromatography, ion exchange chromatography and electrophoresis. Molecular exclusion chromatography showed four activity peaks with molecular weights of 624, 434, 224 and 115 kDa. Ion exchange chromatography allowed three fractions to be separated with TPS activity which eluted at 0.35, 0.7 and 1 M KCl. Native PAGE of each pool had three protein bands with apparent Mr 660, 440 and 200 kDa. Western blot results showed that anti-TPS antibody interacted with 115 and 67 kDa polypeptides; these polypeptides share peptide sequences as indicated by internal sequence data. The effects of pH and temperature on enzyme stability and activity were studied. For fractions eluted at 0.35 and 1.0 M KCl, the optimum pH is 5.5, while an optimum pH of 7.5 for 0.7 M fraction was found. The three fractions eluted from ion exchange chromatography were stable in a pH 5-11 range. Optimal temperatures were 25, 45 and 55 °C for 0.7, 0.35 and 1.0 M fractions, respectively. The 0.7 M KCl fraction showed highest stability in a temperature range of 25-60 °C, whereas the 0.35 M KCl fraction had the lowest in the same temperature range.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element SELAGINELLA LEPIDOPHYLLA
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element TREHALOSE 6-PHOSPHATE SYNTHASE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element TREHALOSE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ISOFORMS
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Márquez-Escalante, J.A.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Figueroa-Soto, C.G.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Valenzuela-Soto, E.M.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1v-wx8RlgFeLhwkoQgx3DTO5-wJZ3T9X0/view?usp=drivesdk">https://drive.google.com/file/d/1v-wx8RlgFeLhwkoQgx3DTO5-wJZ3T9X0/view?usp=drivesdk</a>
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-8061 25.06.2025 25.06.2025 Documentos solicitados