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. 2021 Jan 12;20:14. doi: 10.1186/s12934-020-01507-w

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 1 — Multiple amino acid sequence alignment of various cyanobacteria chlorophyllases. These cyanobacteria chlorophyllases are from Oscillatoria acuminata PCC 6304, Nostoc sp. PCC 7524, Scytonema tolypothrichoides VB-61278, Chamaesiphon minutus PCC 6605, Cyanobacteria bacterium J007, Chroococcidiopsis cubana CCALA 043, cyanobacterium TDX16, Nostoc punctiforme NIES-2108, and Nostoc sp. CENA543. Asterisks, colons, and periods represent identity, strong similarity, and weak similarity, respectively. Three black triangles denote the putative catalytic triad: Ser, Asp, and His residues. The predicted signal peptide sequence of OaCLH is underlined