Table 2. Top Blast hits of the potential adhesive proteins by protein family and the NCBI non-redundant database.

Transcript ID	FC 1	Protein family	Query length (aa)	NCBI description	Species	Accession number	Identity%	Alignment length (aa)	Hit length (aa)	NCBIE-value	Bit score
HYRNA1402_13087	10,08	FRG1-like family [PF06229.7]	290	Uncharacterised LOC100202041precursor	Hydra vulgaris	NP_001296632.1	98	283	290	0.0	559
HYRNA1402_28063.1	5,41	N.A. 3	141	Hypothetical protein	Crassostrea gigas	EKC32775.1	48	59	126	5e-30	114
HYRNA1402_6988	5,17	Alpha-L-arabinofuranosidase B (ABFB) [PF05270.8]	310	alpha-L-arabinofuranosidase B domain 2	Hydra vulgaris	XP_002167824.2	99	284	310	0.0	573
HYRNA1402_11464	5,06	Peroxidase [PF00141.18]	305	Putative ascorbate eroxidase 2	H. vulgaris	XP_002161794.1	99	303	369	0.0	637
HYRNA1402_15963	4,89	N.A.	264	Multiple epidermal growth factor-like domains protein 11 2	H.vulgaris	XP_002166617.1	100	264	264	0.0	542
HYRNA1402_18991	4,84	DOMON domain [PF03351.12]	198	Uncharacterised protein LOC100209978	H. vulgaris	XP_004212051.1	99	198	198	5e-119	346
HYRNA1402_5493	4,80	Alpha-L-arabinofuranosidase B (ABFB) [PF05270.8]	588	Uncharacterised protein LOC100202073	H. vulgaris	XP_002159690.1	100	588	598	0.0	1,208
HYRNA1402_18715	4,79	Galactose binding lectin domain [PF02140.13]	208	Rhamnose-binding lectin-like 2	H. vulgaris	XP_012565931.1	68	141	405	4e-97	298
HYRNA1402_10822	4,78	Peroxidase [PF00141.18]	365	Putative ascorbate peroxidase 2	H. vulgaris	XP_012561209.1	93	339	348	0.0	693
HYRNA1402_26258	4,71	Galactose binding lectin domain [PF02140.13]	166	Rhamnose-binding lectin-like 2	H. vulgaris	XP_012565931.1	96	160	405	3e-98	297
HYRNA1402_10625	4,32	Galactose binding lectin domain [PF02140.13]	311	Rhamnose-binding lectin-like 2	H. vulgaris	XP_012565931.1	99	307	405	0.0	627
HYRNA1402_9309	4,12	Chitin binding peritrophin-A domain [PF01607.19]	165	Uncharacterised protein LOC100199767	H. vulgaris	XP_002165607.1	100	165	173	1e-101	310
HYRNA1402_30969	3,84	N.A.	137	Uncharacterised protein LOC100205981	H. vulgaris	XP_012558233.1	100	134	1,421	2e-73	247
HYRNA1402_37634	3,58	N.A.	110	Uncharacterised protein LOC100205981	H. vulgaris	XP_012558233.1	100	110	1,421	2e-65	223
HYRNA1402_9985	3,50	N.A.	415	Uncharacterised protein LOC105845407	H. vulgaris	XP_012558601.1	81	335	764	0.0	670
HYRNA1402_24690	3,27	N.A.	178	Uncharacterised protein LOC105845407	H. vulgaris	XP_012558601.1	77	137	764	3e-89	285
HYRNA1402_24862	3,19	Cystatin domain [PF00031.16]	136	Cystatin JZTX-75-like 2	H. vulgaris	XP_002162922.2	99	135	138	3e-90	268
HYRNA1402_11567.2	2,87	FRG1-like family [PF06229.7]	290	Peroxidase PPOD1-like precursor 2	H. vulgaris	NP_001267756.1	96	277	290	0.0	572
HYRNA1402_26940	1,93	Galactose binding lectin domain [PF02140.13]	131	Rhamnose-binding lectin-like 2	H. vulgaris	XP_002166914.1	89	123	403	1e-73	234
HYRNA1402_26939	1,89	Galactose binding lectin domain [PF02140.13]	131	Rhamnose-binding lectin-like 2	H. vulgaris	XP_002166914.1	100	131	403	5e-86	266
HYRNA1402_23373	1,85	Galactose binding lectin domain [PF02140.13]	157	Rhamnose-binding lectin-like 2	H. vulgaris	XP_002166914.1	100	157	403	1e-104	315

Notes: The list is sorted by log2 fold change after differential expression analysis.

¹Transcript fold change (FC) in log2 between Whole polyp and Anterior part samples.

²Annotations are from uncharacterised proteins.

³No protein family was recognisable. Transcripts shaded in light grey are expressed in the basal disc cells only, and those shaded in dark grey are expressed in basal disc and in other cells of the polyp.