nicotinate + UDP-alpha-D-glucose <=> N-(beta-D-glucosyl)nicotinate + UDP
nicotinate + udp-alpha-d-glucose <=> n-(beta-d-glucosyl)nicotinate + udp
nicotinate + UDP-alpha-D-glucose <=> N-(beta-D-glucosyl)nicotinate + UDP
nicotinate + udp-alpha-d-glucose <=> n-(beta-d-glucosyl)nicotinate + udp