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Comparative structural analysis of fruit and stem bromelain from Ananas comosus
Aizi Nor Mazila Ramli1, Nor Hasmaliana Abdul Manas2, Azzmer Azzar Abdul Hamid3
1Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Gambang, Kuantan, Pahang Darul Makmur, Malaysia.
Food Chemistry
|November 2, 2018
Summary
Pineapple cysteine proteases, known as bromelains, exhibit therapeutic properties. Comparing fruit and stem bromelains reveals unique structural distinctions, offering insights for industrial uses.
Area of Science:
- Biochemistry
- Plant Science
- Pharmacology
Background:
- Cysteine proteases from pineapple (Ananas comosus) are recognized phytotherapeutical agents.
- These proteases, particularly bromelain, possess anti-edematous, anti-inflammatory, anti-thrombotic, and fibrinolytic activities.
- Bromelain is widely accepted as a phytotherapeutical drug, with distinct fruit and stem forms.
Purpose of the Study:
- To analyze and compare the amino acid sequences and domain structures of fruit and stem bromelains from Ananas comosus.
- To investigate the unique properties of modelled fruit and stem bromelain structures.
- To provide new insights into the distinct properties of these bromelains for potential industrial applications.
Main Methods:
- Amino acid sequence analysis.
- Domain analysis of cysteine proteases.
- Structural prediction and modeling of fruit and stem bromelains.
- Comparative analysis of fruit and stem bromelain structures.
Main Results:
- Identified several differences and similarities between fruit and stem bromelains.
- Revealed unique properties in the predicted structures of modelled fruit (BAA21848) and stem (CAA08861) bromelains.
- Demonstrated distinct structural characteristics between the two bromelain types.
Conclusions:
- Fruit and stem bromelains from Ananas comosus are distinct cysteine protease members.
- The unique structural properties of each bromelain type offer potential for diverse industrial applications.
- Comparative structural analysis deepens the understanding of these phytotherapeutical agents.
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