Mediates the NAD(+) import into chloroplast. Favors the NAD(+)(in)/ADP or AMP(out) antiport exchange, but is also able to catalyze a low unidirectional transport (uniport) of NAD(+). Transports NAD(+), nicotinic acid adenine dinucleotide, nicotinamide mononucleotide, nicotinic acid mononucleotide, FAD, FMN, TTP, TDP, TMP, UTP, UDP, UMP, CTP, CDP, CMP, GTP, GDP, GMP, 3'-AMP, ATP, ADP, AND AMP, has low transport activity with cAMP, NADH and alpha-NAD(+), and has no activity with NADP(+), NADPH, nicotinamide, nicotinic acid, adenosine, thiamine mono- or diphosphate, inorganic phosphate, CoA, folate, NaCl, malate, malonate, citrate, fumarate, aspartate, glutamate, S-adenosylmethionine, lysine, arginine, and ornithine. Inhibited by pyridoxal 5'-phosphate, bathophenanthroline, tannic acid, mersalyl, mercuric chloride, p-hydroxymercuribenzoate, p-hydroxymercuribenzoate sulfonate, bromocresol purple and N-ethylmaleimide. Highly expressed in young meristematic shoot area, vascular bundles of leaves, developing siliques including the funiculi, petal veins, developing pollen and central cylinder of roots. Appears to be a mitochondrial envelope-located membrane protein lacking an N-terminal-located transit peptide. Belongs to the mitochondrial carrier (TC 2.A.29) family.