Chlorophyllase (IPR017395)

Short name: Chlorophyllase

Overlapping homologous superfamilies

Family relationships



Chlorophyllase (Chlase) is an enzyme involved in chlorophyll degradation and catalyses the hydrolysis of the ester bond to yield chlorophyllide and phytol [PMID: 10611389, PMID: 15598807, PMID: 17369368]. It is found in higher plants, green algae and diatoms [PMID: 10611389]. It is important for de-greening processes such as fruit ripening, leaf senescence and flowering, as well as in the turnover and homeostasis of chlorophyll [PMID: 16610227, PMID: 18633118, PMID: 17513504].

Chlase removes the lipophilic phytol moiety of chlorophyll [PMID: 17996203]. It acts preferentially on chlorophyll a, but will also accept chlorophyll b and pheophytins as substrates [PMID: 16669755]. Chlase functions as a rate-limiting enzyme in chlorophyll catabolism and is controlled via posttranslational regulation [PMID: 17369368]. Ethylene and methyl jasmonate, which are known to accelerate senescence in many species, can enhance the activity of a form of Chlase [PMID: 16669755].

This entry represents chloroplast-type Chlase.

GO terms

Biological Process

GO:0015996 chlorophyll catabolic process

Molecular Function

GO:0047746 chlorophyllase activity

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.