For resident Indian seller TDS of 1% is applicable only if the property value is more than 50 lakhs.
If your brother's who is co owner, share of consideration value is less than Rs. 50 lakhs, then no TDS will be deducted by the buyer out of the sale consideration amount.
However since you are an OCI, the buyer has to deduct TDS out of the share of amount to be settled to you by way of sale consideration amount.
Selling of property by NRI is taxable under u/s 195 of the Income Tax Act, 1961.
Long term capital gain tax will be 22.66% if NRI is selling a property in India after holding it for more than 3 years. In case holding period is less than 3 years then Short Term Capital Gain Tax will be applicable as per income tax slab. In case of short term capital gain, TDS applicable will be 33.99% irrespective of tax slab of the NRI.
Buyer will deposit TDS with Income Tax Department. TDS is applicable even if value of property is less than 50 lakhs.
If you are transferring your share in the property to your brother by way of gift deed, then you may have to pay the applicable stamp duty for this registered transaction.
But once you have transferred your share in the property to your brother by executing a gift deed, then you cannot legally claim the value of your share out of this property sold by your brother at any stage after you have gifted your share to your brother, because a gift deed cannot be executed for a consideration amount.