Publication:
Characteristics of the enzyme N-acetytransferase in the optic lobe of the giant freshwater prawn, Macrobrachium rosenbergii de Man

Issued Date

1993-01-01

Resource Type

Article

ISSN

03050491

DOI

10.1016/0305-0491(93)90266-8

Other identifier(s)

2-s2.0-0027530672

Rights

Mahidol University

Rights Holder(s)

SCOPUS

Bibliographic Citation

Comparative Biochemistry and Physiology -- Part B: Biochemistry and. Vol.104, No.3 (1993), 449-454

Suggested Citation

Boonsirm Withyachumnarnkul, Anchalee Pongsa-Asawapaihoon, Boonserm Poolsanguan Characteristics of the enzyme N-acetytransferase in the optic lobe of the giant freshwater prawn, Macrobrachium rosenbergii de Man. Comparative Biochemistry and Physiology -- Part B: Biochemistry and. Vol.104, No.3 (1993), 449-454. doi:10.1016/0305-0491(93)90266-8 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/22539

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Title

Characteristics of the enzyme N-acetytransferase in the optic lobe of the giant freshwater prawn, Macrobrachium rosenbergii de Man

Author(s)

Boonsirm Withyachumnarnkul
 Anchalee Pongsa-Asawapaihoon
 Boonserm Poolsanguan

Other Contributor(s)

Mahidol University

Abstract

1. 1. The enzyme N-acetyltransferase (NAT) in the optic lobe of the giant freshwater prawn, Macrobrachium rosenbergii de Man, was characterized and compared to NAT of the rat pineal. 2. 2. Using tryptamine as substrate, the optic lobe NAT had a Vmax400-fold higher, and a Km300-fold lower, than that of the pineal NAT. 3. 3. At 25°C, the optic lobe NAt activity was maximal at pH 6.5 and stable up to 3 hr without significant loss of activity. 4. 4. The optic lobe NAT requires arylalkylamines as substrates. 5. 5. The results indicate that the optic lobe NAT differs kinetically from the rat pineal NAT and suggest that it is an arylalkylamine NAT. © 1993.

Keyword(s)

Biochemistry, Genetics and Molecular Biology

Availability

URI

https://repository.li.mahidol.ac.th/handle/123456789/22539

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Scopus 1991-2000