1. Serôdio P and Rudy B. (1998) Differential expression of Kv4 K+ channel subunits mediating subthreshold transient K+ (A-type) currents in rat brain. J Neurophysiol 79:1081-91 [Journal] .

NeuronCompartmentPropertyConnectivityNotes
Olfactory bulb main interneuron granule MC GABA cellSomaI A.mRNA of A-channel subunit Kv4.2 is expressed predominantly in granule cells. (In contrast, that of Kv4.3, also of A-channel, is expressed predominantly in periglomerular cells) (Serôdio P and Rudy B, 19981 ).
Olfactory bulb main interneuron periglomerular GABA cellSomaI A.Two types of PG cells can be distinguished by the presence of delayed-rectifier. R-type has DR current and shows outward rectification under current-clamp; N-type does not. A third type, X-type, has properties of both R- and N-type. Zinc modifies the A-type current, but not the delayed-rectifier type: at given voltages, it reduces A-current peak amplitude, slows its kinetics. Zinc shifts activation and inactivation toward more positive voltage. Thus, at physiological resting potential -55mV, zinc accelerates repolarization. (Puopolo M and Belluzzi O, 19982 ). mRNA of A-channel subunit Kv4.3 is expressed predominantly in periglomerular cells. (In contrast, that of Kv4.2, also of A-channel, is expressed predominantly in granule cells) (Serôdio P and Rudy B, 19981 ).
Olfactory bulb main interneuron granule TC GABA cellSomaI A.mRNA of A-channel subunit Kv4.2 is expressed predominantly in granule cells. (In contrast, that of Kv4.3, also of A-channel, is expressed predominantly in periglomerular cells) (Serôdio P and Rudy B, 19981 ).

Classical References: first publications on each compartmental property; search PubMed for complete list
1.  Serôdio P and Rudy B. (1998) Differential expression of Kv4 K+ channel subunits mediating subthreshold transient K+ (A-type) currents in rat brain. J Neurophysiol 79:1081-91 [Journal] .
2.  Puopolo M and Belluzzi O. (1998) Functional heterogeneity of periglomerular cells in the rat olfactory bulb. Eur J Neurosci 10:1073-83.