Several new SABPs have been identified and many more candidate SABPs are being further assessed for SA-binding affinity. Only those proteins whose interaction with SA has been demonstrated by at least two independent assays such as i) exclusion chromatography assay with ³H-SA, ii) photo-affinity crosslinking with 4-azido SA, iii) surface plasmon resonance using 3-amino ethyl SA, or iv) altered enzymatic activity, are listed as SABPs. We also provide the complete list of established and candidate SABPs identified by photo-activated crosslinking to 4AzSA and immuno-selection and by protein microarray.

Date Reported	Gene Identification	Protein Name/Description
11/06/2017	At3g55050	PP2C-D4
11/06/2017	At4g26080	ABI1
11/06/2017	At5g57050	ABI2
12/23/2016	Solyc02g084700	SlMORC1*
12/23/2016	Sotub02g027820	StMORC1*
03/25/2016	At1g20696	high mobility group B 3 (HMGB3)
12/16/2014	At1g64280	non-expressor of PR genes 1 (NPR1)
12/16/2014	At3g51840	acyl-CoA oxidase 4 (ACX4)
12/16/2014	At3g45140	lipoxygenase 2 (LOX2)
12/16/2014	At4g13930	serine hydroxymethyltransferase 4 (SHM4)
12/16/2014	At1g03680	thioredoxin M-type 1 (TRX-m1)
12/16/2014	At1g66200	glutamine synthetase (GSR2)
12/16/2014	At2g31570	glutathione peroxidase (GPX2)
12/16/2014	At1g79870	hydroxypyruvate 2 (HPR2)
12/16/2014	At1g67090	ribulose biphosphate carboxylase small subunit 1A (RBCS1A)
12/16/2014	At4g23920	UDP-D-glucose/UDP-D-galactose 4-epimerase 2 (UGE2)
01/15/2014	At4g20850	Tripeptidyl Peptidase II
01/15/2014	At1g12900	Glyceraldehyde 3-Phosphate Dehydrogenases GAPDH-A1
01/15/2014	At3g26650	GAPDH-A2
01/15/2014	At1g13440	GAPDH-C1
01/15/2014	At4g04120	GAPDH-C2
04/30/2013	At4g02520	AtGSTF2
04/30/2013	At2g47730	AtGSTF8
04/30/2013	At2g30870	AtGSTF10
04/30/2013	At3g03190	AtGSTF11
03/18/2011	At5g66190	Ferredoxin-NADP+-oxidoreductase 1
03/18/2011	At4g28750	Subunit E of Photosystem I
03/18/2011	At5g55070	Subunit E2 of α-ketoglutarate dehydrogenase complex(succinyl transferase)
03/18/2011	At5g65620	metalloendopeptidase/thimet oligopeptidase

*The Arabidopsis orthologues, AtMORC1 and AtMORC2, have not been tested for SA-binding activity