An enzyme from lupin seeds forming alanine derivatives of cytokinins (Record no. 51577)

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fixed length control field 01509nam a2200253Ia 4500
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control field MX-MdCICY
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control field 20250625160210.0
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-17414
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245 10 - TITLE STATEMENT
Title An enzyme from lupin seeds forming alanine derivatives of cytokinins
490 0# - SERIES STATEMENT
Volume/sequential designation PhytoChemistry, 22(2), p. 375-381, 1983
520 3# - SUMMARY, ETC.
Summary, etc. A new enzyme, which catalyses the conversion of the cytokinin zeatin to the alanine conjugate lupinic acid, has been partly purified from developing lupin seed (Lupinus luteus). Paired-ion, reverse phase HPLC was adapted to analyse the enzyme reaction quantitatively. The enzyme used O-acetyl-l-serine as the source of the amino acid residue, and it interacted with substrates in a ping pong bi bi mechanism. A number of adenine derivatives served as substrates, but preference was shown for compounds with high cytokinin activity. The possible role of the enzyme, tentatively called B-(9-cytokinin)alanine synthase or lupinic acid synthase, in the regulation of hormone activity is discussed
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element LUPINUS LUTEUS
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element LEGUMINOSAE
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element CYTOKININ METABOLISM
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element ENZYME FORMING ALANYL CONJUGATES
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element PURIFICATION
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Entsch, B.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Parker, C. W.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Letham, D. S.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1QY244TKfvENgV9T7zbtYkGHGexcS87Ot/view?usp=drivesdk">https://drive.google.com/file/d/1QY244TKfvENgV9T7zbtYkGHGexcS87Ot/view?usp=drivesdk</a>
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-17414 25.06.2025 25.06.2025 Documentos solicitados