Fig. 2From: Identification and functional analysis of the geranylgeranyl pyrophosphate synthase gene (crtE) and phytoene synthase gene (crtB) for carotenoid biosynthesis in Euglena gracilis Alignment of the deduced E. gracilis CrtB amino acid sequence with known phytoene synthases. The accession numbers are Capsicum annuum PSY1, [GenBank: CAA48155]; Gloeobacter violaceus PCC 7421 CrtB [GenBank: BAC89685]; Synechococcus elongatus PCC 7942 PYS [GenBank: CAA45350]; Synechocystis sp. PCC 6803 PYS [GenBank: CAA48922]; Chlamydomonas reinhardtii PSY [GenBank: XP_001701192]; Chlorella zofingiensis PSY [GenBank: CBW37867] and Haematococcus pluvialis PYS [GenBank: AAY53806]. Underlined sequences indicate the two aspartate-rich motifs (DXXXD). Multiple sequence alignment was conducted with Clustal W using MEGA version 6.0 [59]Back to article page