Region from -553 bp to the +39 bp is the minimal enhancer which reproduces the spatial and temporal expression pattern of the endogenous gene Cititf1.


This region includes three distinct regions of regulation.

- a central region, involved in activation of the expression in the endoderm, is situated between -481 and -328 bp of the transcription start and contains cis-regulatory sequences associated with the endoderm-specific transcriptional activation.

- another region of control, required to achieve an efficient gene expression, lies between -553 and -581 bp.

- finally, the enhancer proximal region includes sequences relevant for the activation of expression in the mesenchyme cells, expression that is normally silenced by negative control elements between -481 and -433 bp.

Be careful, coordinates in the paper are different from ANISEED coordinates. We took the KH transcript model as reference.

Coordinates of this region in the paper : -355bp/-252bp

Name of the construct in the paper : construct delta2

Modification of Cititf1 -553/-399 by deletion

CONS00000309: pTitf1 -553/-450 pTitf1::LacZ

3,636,9093,637,011

Aniseed Coordinates: [3,636,909 / 3,637,011] on scaffold KhC10

This sequence was found using a blast on the JGI Version 1.0 with the sequence includes in the paper.

Fanelli et al. (2003). Interplay of negative and positive signals controls endoderm-specific expression of the ascidian Cititf1 gene promoter. Dev. Biol. 263(1):12-23