1.14.18.5	D-erythro-eicosasphinganine + NADH + H+ + O2	-	Zea mays	4-hydroxyeicosasphinganine + NAD+ + H2O	-	?	433606	
1.14.18.5	D-erythro-sphinganine + NADH + H+ + O2	-	Zea mays	4-hydroxysphinganine + NAD+ + H2O	free 4-hydroxysphinganine is produced in excised corn shoots by the direct hydroxylation of sphinganine and not from the breakdown of complex sphingolipids	?	433607	
1.14.18.5	D-erythro-sphinganine + NADPH + H+ + O2	-	Zea mays	4-hydroxysphinganine + NADP+ + H2O	-	?	433608	
1.14.18.5	dihydroceramide + reduced acceptor + H+ + O2	-	Saccharomyces cerevisiae	?	-	?	420601	
1.14.18.5	dihydroceramide + reduced acceptor + H+ + O2	-	Saccharomyces cerevisiae W303C	?	-	?	420601	
1.14.18.5	dihydroceramide + reduced acceptor + H+ + O2	-	Homo sapiens	phytoceramide + acceptor + H2O	-	?	420602	
1.14.18.5	dihydrosphingosine + NADPH + H+ + O2	-	Saccharomyces cerevisiae	phytosphingosine + NADP+ + H2O	-	?	433642	
1.14.18.5	DL-erythro-dihydrosphingosine + reduced acceptor + H+ + O2	-	Saccharomyces cerevisiae	phytosphingosine + acceptor + H2O	-	?	420619	
1.14.18.5	DL-erythro-dihydrosphingosine + reduced acceptor + H+ + O2	-	Saccharomyces cerevisiae W303C	phytosphingosine + acceptor + H2O	-	?	420619	
1.14.18.5	additional information	DL-threo-sphinganine is not an effective substrate. Individual ceramide species having 2-, 6-,8-, or 24-carbon fatty acyl chains amide-linked to sphinganine are hydroxylated with similar efficiency as free sphinganine	Zea mays	?	-	?	89