Conservation and Variability of Synaptonemal Complex Proteins in Phylogenesis of Eukaryotes

Table 3

SC proteins similar to proteins from the proteomes of algae, mosses, fungi, and green plants.

Eukaryotic taxa	Total proteins in the NCBI database^a	Proteins of the SC central space		Lateral element proteins and other SC proteins
		1	2	3	4
		From animals^#	From plants and fungi^#	From plants and fungi^#	From animals^#
Chlorophyta (green algae and Viridiplantae)	156803	SYCP1 Mm (50)	Low similarity	ASY2 At (117),; ASY1 At (163), Hop1 Sc (99)	HIM-3 Ce (54),; FKBP6 Mm (87)
Phaeophyceae (brown algae and Stramenopiles)	27435	SYCP1 Mm (53)	Low similarity	ASY2 At (65),; ASY1 At (124),; Hop1 Sc (71), Hop1 annotated for Ectocarpus  siliculosus	FKBP6 Mm (85)
Bryophyta, Anthocerotophyta, and Marchantiophyta (mosses and Viridiplantae)	95921	Low similarity	Low similarity	ASY2 At (183),; ASY1 At (278),; Hop1 Sc (86)	FKBP6 Mm (104)
Lycopodiophyta (Viridiplantae and Trachaeophyta)	71720	Low similarity	ZYP1a At (111), ZYP1b At (112)	ASY2 At (197), ASY1 At (291),Hop1 Sc (96)	SYCP2 Mm (60), FKBP6 Mm (106)
Euphyllophyta (Viridiplantae and Trachaeophyta)	2066225	Low similarity	ZYP1 annotated for various 𝐬𝐩𝐞𝐜𝐢𝐞𝐬^b	ASY1 annotated for  Brassica oleracea;^b; Hop1 Sc (100)	FKBP6 Mm (115)
Microsporidia (unicellular lower fungi and Opisthokonta)	20596	Low similarity	Low similarity	ASY1 At (53), Hop1 Sp (50), Hop1 Sc (55)
Blastocladiomycota, Chytridiomycota, Glomeromycota, and Fungi insertae sedis (Zygomycota) (lower fungi and (Opisthokonta)	12709	Low similarity	Low similarity	ASY2 At (87), ASY1 At (126),; Hop1 Sc (106)	FKBP6 Mm (102)
Ascomycota (Opisthokonta)—higher fungi	1819825	SYCP1 Mm (50), SYCP1 Dr (51)	Low similarity^b	ASY2 At (75), ASY1 At (100),; Hop1-like annotated^b	HIM-3 Ce (50),; FKBP6 Mm (77)
Basidiomycota (Opisthokonta) and higher fungi	461746	Low similarity	Low similarity	ASY2 At (85), ASY1 At (123),Hop1 Sp (74), Hop1 Sc (141)	HIM-3 Ce (56),; FKBP6 Mm (72)

aAs of the time of study start (September 2011).
^bSimilarity with cognate proteins is not shown.
Maximal scores are indicated in parentheses. Proteins with high scores (100 and higher) are in bold. The model organisms are designated as in Table 1.
^#Hereinafter: SC proteins from animals are those of Dm, Ce, Dr, Mm, and from fungi and plants those of Sc, Sp, and At.