CCAAT-binding transcription factor (CBF-B/NF-YA) family protein. Identical to Nuclear transcription factor Y subunit A-9 (NFYA9) [Arabidopsis Thaliana] (GB:Q945M9;GB:Q9LIH3); similar to HAP2A (EMBRYO DEFECTIVE 2220), transcription factor [Arabidopsis thaliana] (TAIR:AT5G12840.4); similar to HAP2A (EMBRYO DEFECTIVE 2220), transcription factor [Arabidopsis thaliana] (TAIR:AT5G12840.3); similar to HAP2A (EMBRYO DEFECTIVE 2220), transcription factor [Arabidopsis thaliana] (TAIR:AT5G12840.2); similar to CCAAT-binding factor B subunit homolog (GB:AAC49266.1); similar to CCAAT-binding factor:SUBUNIT=B (GB:2204247A); contains InterPro domain CCAAT-b